/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:37:22,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:37:22,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:37:22,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:37:22,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:37:22,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:37:22,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:37:22,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:37:22,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:37:22,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:37:22,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:37:22,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:37:22,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:37:22,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:37:22,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:37:22,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:37:22,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:37:22,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:37:22,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:37:22,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:37:22,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:37:22,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:37:22,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:37:22,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:37:22,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:37:22,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:37:22,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:37:22,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:37:22,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:37:22,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:37:22,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:37:22,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:37:22,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:37:22,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:37:22,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:37:22,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:37:22,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:37:22,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:37:22,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:37:22,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:37:22,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:37:22,786 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:37:22,810 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:37:22,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:37:22,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:37:22,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:37:22,812 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:37:22,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:37:22,812 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:37:22,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:37:22,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:37:22,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:37:22,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:37:22,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:37:22,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:37:22,814 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:37:22,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:37:22,814 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:37:22,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:37:22,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:37:22,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:37:22,815 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:37:22,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:37:22,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:37:22,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:37:22,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:37:22,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:37:22,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:37:22,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:37:22,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:37:22,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:37:22,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:37:23,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:37:23,311 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:37:23,315 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:37:23,317 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:37:23,317 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:37:23,319 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-25 05:37:23,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc031c8e8/bc770a0efa55479ea70f6479e61abeb5/FLAG8e85e735a [2020-09-25 05:37:24,041 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:37:24,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-25 05:37:24,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc031c8e8/bc770a0efa55479ea70f6479e61abeb5/FLAG8e85e735a [2020-09-25 05:37:24,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc031c8e8/bc770a0efa55479ea70f6479e61abeb5 [2020-09-25 05:37:24,296 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:37:24,303 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:37:24,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:24,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:37:24,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:37:24,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:24" (1/1) ... [2020-09-25 05:37:24,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df08b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:24, skipping insertion in model container [2020-09-25 05:37:24,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:24" (1/1) ... [2020-09-25 05:37:24,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:37:24,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:37:24,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:24,809 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:37:25,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:25,087 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:37:25,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:25 WrapperNode [2020-09-25 05:37:25,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:25,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:37:25,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:37:25,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:37:25,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:25" (1/1) ... [2020-09-25 05:37:25,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:25" (1/1) ... [2020-09-25 05:37:25,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:25" (1/1) ... [2020-09-25 05:37:25,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:25" (1/1) ... [2020-09-25 05:37:25,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:25" (1/1) ... [2020-09-25 05:37:25,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:25" (1/1) ... [2020-09-25 05:37:25,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:25" (1/1) ... [2020-09-25 05:37:25,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:37:25,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:37:25,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:37:25,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:37:25,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:37:25,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:37:25,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:37:25,300 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:37:25,300 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:37:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:37:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:37:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:37:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:37:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:37:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:37:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:37:26,686 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:37:26,687 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:37:26,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:26 BoogieIcfgContainer [2020-09-25 05:37:26,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:37:26,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:37:26,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:37:26,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:37:26,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:37:24" (1/3) ... [2020-09-25 05:37:26,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7395106e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:26, skipping insertion in model container [2020-09-25 05:37:26,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:25" (2/3) ... [2020-09-25 05:37:26,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7395106e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:26, skipping insertion in model container [2020-09-25 05:37:26,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:26" (3/3) ... [2020-09-25 05:37:26,707 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label54.c [2020-09-25 05:37:26,720 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:37:26,732 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:37:26,755 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:37:26,792 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:37:26,793 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:37:26,793 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:37:26,793 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:37:26,793 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:37:26,793 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:37:26,794 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:37:26,794 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:37:26,828 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:37:26,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 05:37:26,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:26,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:26,856 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:26,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:26,866 INFO L82 PathProgramCache]: Analyzing trace with hash 79338610, now seen corresponding path program 1 times [2020-09-25 05:37:26,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:26,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836916828] [2020-09-25 05:37:26,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:27,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:27,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:27,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:28,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:28,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:29,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:30,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:31,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:32,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:32,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 05:37:32,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:37:32,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 05:37:32,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:32,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:32,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:37:32,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:37:32,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 05:37:32,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:37:32,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:32,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:32,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:32,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:32,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:32,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 05:37:32,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:32,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:32,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:32,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:32,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:37:32,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:32,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:32,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836916828] [2020-09-25 05:37:32,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:37:32,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:37:32,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353690014] [2020-09-25 05:37:32,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:37:32,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:32,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:37:32,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:37:32,455 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 05:37:34,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:34,861 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 05:37:34,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:37:34,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-09-25 05:37:34,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:34,905 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 05:37:34,905 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 05:37:34,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:34,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 05:37:35,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 05:37:35,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 05:37:35,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 05:37:35,053 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 127 [2020-09-25 05:37:35,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:35,054 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 05:37:35,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:37:35,055 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 05:37:35,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 05:37:35,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:35,062 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:35,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:37:35,063 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:35,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:35,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1605843042, now seen corresponding path program 1 times [2020-09-25 05:37:35,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:35,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685873129] [2020-09-25 05:37:35,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:35,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:35,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:35,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:35,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:36,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:36,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:36,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:37,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:40,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:40,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 05:37:40,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:37:40,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:37:40,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:40,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:40,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:40,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:37:40,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 05:37:40,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:40,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:40,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:40,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:40,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:40,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:40,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:37:40,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:40,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:40,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:40,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:40,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:40,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:40,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:37:40,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:40,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:37:40,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:40,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:40,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:40,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:40,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:37:40,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:40,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685873129] [2020-09-25 05:37:40,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:40,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:40,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329485910] [2020-09-25 05:37:40,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:40,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:40,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:40,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:40,426 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 05:37:42,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:42,521 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-25 05:37:42,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:42,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-09-25 05:37:42,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:42,533 INFO L225 Difference]: With dead ends: 1757 [2020-09-25 05:37:42,533 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 05:37:42,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:37:42,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 05:37:42,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-25 05:37:42,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 05:37:42,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1283 transitions. [2020-09-25 05:37:42,579 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1283 transitions. Word has length 145 [2020-09-25 05:37:42,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:42,580 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1283 transitions. [2020-09-25 05:37:42,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:42,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1283 transitions. [2020-09-25 05:37:42,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 05:37:42,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:42,586 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:42,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:37:42,586 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:42,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:42,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1464054185, now seen corresponding path program 1 times [2020-09-25 05:37:42,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:42,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847092694] [2020-09-25 05:37:42,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:42,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:42,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:43,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:43,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:43,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:44,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:47,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:47,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 05:37:47,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:37:47,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4470 [2020-09-25 05:37:47,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:47,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:47,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:47,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 05:37:47,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 05:37:47,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:47,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:47,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:47,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:47,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:47,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:47,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:37:47,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:47,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:47,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:47,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:47,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:47,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:47,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:47,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:47,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:47,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 05:37:47,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:47,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 05:37:47,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:47,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:47,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:47,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:47,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 05:37:47,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:37:47,398 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:47,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847092694] [2020-09-25 05:37:47,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:47,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:37:47,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092171928] [2020-09-25 05:37:47,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:37:47,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:47,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:37:47,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:37:47,403 INFO L87 Difference]: Start difference. First operand 1036 states and 1283 transitions. Second operand 6 states. [2020-09-25 05:37:50,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:50,232 INFO L93 Difference]: Finished difference Result 2820 states and 3635 transitions. [2020-09-25 05:37:50,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:37:50,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-09-25 05:37:50,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:50,243 INFO L225 Difference]: With dead ends: 2820 [2020-09-25 05:37:50,243 INFO L226 Difference]: Without dead ends: 1125 [2020-09-25 05:37:50,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:37:50,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-09-25 05:37:50,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1115. [2020-09-25 05:37:50,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1115 states. [2020-09-25 05:37:50,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1346 transitions. [2020-09-25 05:37:50,300 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1346 transitions. Word has length 161 [2020-09-25 05:37:50,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:50,300 INFO L479 AbstractCegarLoop]: Abstraction has 1115 states and 1346 transitions. [2020-09-25 05:37:50,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:37:50,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1346 transitions. [2020-09-25 05:37:50,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 05:37:50,309 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:50,309 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:50,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:37:50,310 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:50,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:50,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1343420525, now seen corresponding path program 1 times [2020-09-25 05:37:50,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:50,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221035411] [2020-09-25 05:37:50,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:50,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:50,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:50,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:51,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:51,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:55,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:55,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 05:37:55,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:37:55,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 05:37:55,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:55,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:55,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:37:55,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 05:37:55,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 05:37:55,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:55,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:55,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:55,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:55,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:55,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:55,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:37:55,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:55,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:55,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:55,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:55,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:55,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:55,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:55,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:55,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:55,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:37:55,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:55,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 05:37:55,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:55,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:37:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:55,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:37:55,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:55,844 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:55,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221035411] [2020-09-25 05:37:55,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:55,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:37:55,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534428781] [2020-09-25 05:37:55,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:37:55,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:55,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:37:55,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:37:55,847 INFO L87 Difference]: Start difference. First operand 1115 states and 1346 transitions. Second operand 8 states. [2020-09-25 05:37:59,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:59,504 INFO L93 Difference]: Finished difference Result 3322 states and 4266 transitions. [2020-09-25 05:37:59,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:37:59,505 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 05:37:59,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:59,521 INFO L225 Difference]: With dead ends: 3322 [2020-09-25 05:37:59,521 INFO L226 Difference]: Without dead ends: 2136 [2020-09-25 05:37:59,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:37:59,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2020-09-25 05:37:59,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2084. [2020-09-25 05:37:59,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2084 states. [2020-09-25 05:37:59,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2489 transitions. [2020-09-25 05:37:59,605 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2489 transitions. Word has length 165 [2020-09-25 05:37:59,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:59,606 INFO L479 AbstractCegarLoop]: Abstraction has 2084 states and 2489 transitions. [2020-09-25 05:37:59,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:37:59,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2489 transitions. [2020-09-25 05:37:59,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 05:37:59,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:59,615 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:59,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:37:59,616 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:59,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:59,616 INFO L82 PathProgramCache]: Analyzing trace with hash 207491829, now seen corresponding path program 1 times [2020-09-25 05:37:59,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:59,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471377932] [2020-09-25 05:37:59,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:59,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:59,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:59,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:59,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:00,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:01,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:04,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:04,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 05:38:04,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:38:04,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 05:38:04,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:04,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-25 05:38:04,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 05:38:04,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:04,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:04,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:04,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:04,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:38:04,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:04,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:38:04,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:04,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:04,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:04,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:04,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:04,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 05:38:04,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:38:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:04,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:04,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:04,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:38:04,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:04,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:38:04,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:04,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:04,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:04,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:04,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 05:38:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:04,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:04,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:04,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 05:38:04,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:04,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 05:38:04,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:04,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:04,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:04,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:04,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 05:38:04,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 05:38:05,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471377932] [2020-09-25 05:38:05,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:05,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:05,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100539262] [2020-09-25 05:38:05,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:05,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:05,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:05,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:05,061 INFO L87 Difference]: Start difference. First operand 2084 states and 2489 transitions. Second operand 5 states. [2020-09-25 05:38:07,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:07,042 INFO L93 Difference]: Finished difference Result 4884 states and 5996 transitions. [2020-09-25 05:38:07,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:07,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 05:38:07,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:07,058 INFO L225 Difference]: With dead ends: 4884 [2020-09-25 05:38:07,059 INFO L226 Difference]: Without dead ends: 2822 [2020-09-25 05:38:07,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:07,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2020-09-25 05:38:07,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2708. [2020-09-25 05:38:07,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2708 states. [2020-09-25 05:38:07,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 3279 transitions. [2020-09-25 05:38:07,147 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 3279 transitions. Word has length 189 [2020-09-25 05:38:07,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:07,148 INFO L479 AbstractCegarLoop]: Abstraction has 2708 states and 3279 transitions. [2020-09-25 05:38:07,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:07,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 3279 transitions. [2020-09-25 05:38:07,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 05:38:07,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:07,159 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:07,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:38:07,159 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:07,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:07,160 INFO L82 PathProgramCache]: Analyzing trace with hash 924850542, now seen corresponding path program 1 times [2020-09-25 05:38:07,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:07,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149300656] [2020-09-25 05:38:07,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:07,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:07,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:07,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:07,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:09,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:09,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:11,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking...