/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem04_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:02:37,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:02:37,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:02:37,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:02:37,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:02:37,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:02:37,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:02:37,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:02:37,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:02:37,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:02:37,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:02:37,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:02:37,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:02:37,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:02:37,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:02:37,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:02:37,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:02:37,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:02:37,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:02:37,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:02:37,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:02:37,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:02:37,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:02:37,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:02:37,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:02:37,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:02:37,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:02:37,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:02:37,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:02:37,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:02:37,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:02:37,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:02:37,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:02:37,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:02:37,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:02:37,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:02:37,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:02:37,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:02:37,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:02:37,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:02:37,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:02:37,821 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 01:02:37,843 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:02:37,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:02:37,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:02:37,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:02:37,845 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:02:37,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:02:37,846 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:02:37,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:02:37,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:02:37,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:02:37,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:02:37,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:02:37,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:02:37,847 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:02:37,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:02:37,848 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:02:37,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:02:37,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:02:37,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:02:37,848 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:02:37,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:02:37,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:02:37,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:02:37,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:02:37,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:02:37,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:02:37,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:02:37,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:02:37,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:02:37,850 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 01:02:38,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:02:38,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:02:38,185 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:02:38,186 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:02:38,187 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:02:38,188 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label23.c [2020-10-14 01:02:38,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3792dcf8/067cc1df11ab4869b3dca71ff4af8040/FLAGf0ded3aa3 [2020-10-14 01:02:38,994 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:02:38,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label23.c [2020-10-14 01:02:39,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3792dcf8/067cc1df11ab4869b3dca71ff4af8040/FLAGf0ded3aa3 [2020-10-14 01:02:39,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3792dcf8/067cc1df11ab4869b3dca71ff4af8040 [2020-10-14 01:02:39,552 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:02:39,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:02:39,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:02:39,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:02:39,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:02:39,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:02:39" (1/1) ... [2020-10-14 01:02:39,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@566ddefb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:39, skipping insertion in model container [2020-10-14 01:02:39,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:02:39" (1/1) ... [2020-10-14 01:02:39,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:02:39,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:02:41,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:02:41,578 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:02:42,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:02:42,257 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:02:42,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:42 WrapperNode [2020-10-14 01:02:42,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:02:42,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:02:42,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:02:42,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:02:42,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:42" (1/1) ... [2020-10-14 01:02:42,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:42" (1/1) ... [2020-10-14 01:02:42,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:42" (1/1) ... [2020-10-14 01:02:42,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:42" (1/1) ... [2020-10-14 01:02:42,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:42" (1/1) ... [2020-10-14 01:02:42,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:42" (1/1) ... [2020-10-14 01:02:42,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:42" (1/1) ... [2020-10-14 01:02:42,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:02:42,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:02:42,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:02:42,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:02:42,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:42" (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 01:02:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:02:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:02:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:02:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:02:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:02:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:02:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:02:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:02:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:02:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:02:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:02:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:02:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:02:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:02:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:02:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:02:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:02:47,168 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:02:47,169 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:02:47,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:02:47 BoogieIcfgContainer [2020-10-14 01:02:47,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:02:47,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:02:47,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:02:47,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:02:47,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:02:39" (1/3) ... [2020-10-14 01:02:47,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e7e293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:02:47, skipping insertion in model container [2020-10-14 01:02:47,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:02:42" (2/3) ... [2020-10-14 01:02:47,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e7e293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:02:47, skipping insertion in model container [2020-10-14 01:02:47,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:02:47" (3/3) ... [2020-10-14 01:02:47,199 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label23.c [2020-10-14 01:02:47,211 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:02:47,224 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:02:47,240 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:02:47,274 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:02:47,274 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:02:47,274 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:02:47,274 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:02:47,274 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:02:47,274 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:02:47,275 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:02:47,275 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:02:47,315 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 01:02:47,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2020-10-14 01:02:47,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:02:47,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:47,366 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:02:47,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:02:47,373 INFO L82 PathProgramCache]: Analyzing trace with hash -699559966, now seen corresponding path program 1 times [2020-10-14 01:02:47,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:02:47,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128595583] [2020-10-14 01:02:47,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:02:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:48,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:49,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:53,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:53,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 831 [2020-10-14 01:02:53,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:02:53,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5117 [2020-10-14 01:02:53,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:53,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:53,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 01:02:53,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:02:53,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 825 [2020-10-14 01:02:53,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 01:02:54,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:02:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:54,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:54,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:54,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:02:54,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:54,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:02:54,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:54,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:54,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:02:54,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:02:54,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:02:54,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:02:55,807 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 01:02:55,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128595583] [2020-10-14 01:02:55,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:02:55,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 01:02:55,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567868277] [2020-10-14 01:02:55,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 01:02:55,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:02:55,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 01:02:55,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 01:02:55,838 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-14 01:03:04,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:03:04,355 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2020-10-14 01:03:04,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:03:04,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 817 [2020-10-14 01:03:04,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:03:04,392 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 01:03:04,392 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 01:03:04,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:03:04,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 01:03:04,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2020-10-14 01:03:04,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1689 states. [2020-10-14 01:03:04,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2741 transitions. [2020-10-14 01:03:04,588 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2741 transitions. Word has length 817 [2020-10-14 01:03:04,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:03:04,591 INFO L479 AbstractCegarLoop]: Abstraction has 1689 states and 2741 transitions. [2020-10-14 01:03:04,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 01:03:04,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2741 transitions. [2020-10-14 01:03:04,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2020-10-14 01:03:04,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:03:04,622 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:03:04,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:03:04,623 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:03:04,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:03:04,624 INFO L82 PathProgramCache]: Analyzing trace with hash 483108713, now seen corresponding path program 1 times [2020-10-14 01:03:04,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:03:04,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478774644] [2020-10-14 01:03:04,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:03:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:04,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:05,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:08,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:09,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:09,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 848 [2020-10-14 01:03:09,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:03:09,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-14 01:03:09,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:09,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:09,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:03:09,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:03:09,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 01:03:09,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:10,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:03:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:10,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:10,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:10,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:03:10,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:10,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 01:03:10,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:10,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:10,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:03:10,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:10,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:03:10,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:10,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:03:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:10,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:10,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:10,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:03:10,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:10,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 01:03:10,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:10,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:10,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:10,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:03:10,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 01:03:10,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:10,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:03:10,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478774644] [2020-10-14 01:03:10,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:03:10,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 01:03:10,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482129963] [2020-10-14 01:03:10,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:03:10,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:03:10,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:03:10,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:03:10,831 INFO L87 Difference]: Start difference. First operand 1689 states and 2741 transitions. Second operand 8 states. [2020-10-14 01:03:21,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:03:21,628 INFO L93 Difference]: Finished difference Result 5162 states and 8443 transitions. [2020-10-14 01:03:21,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:03:21,630 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 832 [2020-10-14 01:03:21,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:03:21,651 INFO L225 Difference]: With dead ends: 5162 [2020-10-14 01:03:21,651 INFO L226 Difference]: Without dead ends: 3479 [2020-10-14 01:03:21,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:03:21,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2020-10-14 01:03:21,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3429. [2020-10-14 01:03:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3429 states. [2020-10-14 01:03:21,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3429 states to 3429 states and 5326 transitions. [2020-10-14 01:03:21,827 INFO L78 Accepts]: Start accepts. Automaton has 3429 states and 5326 transitions. Word has length 832 [2020-10-14 01:03:21,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:03:21,827 INFO L479 AbstractCegarLoop]: Abstraction has 3429 states and 5326 transitions. [2020-10-14 01:03:21,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:03:21,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3429 states and 5326 transitions. [2020-10-14 01:03:21,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2020-10-14 01:03:21,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:03:21,845 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:03:21,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:03:21,845 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:03:21,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:03:21,846 INFO L82 PathProgramCache]: Analyzing trace with hash -210479238, now seen corresponding path program 1 times [2020-10-14 01:03:21,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:03:21,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078425707] [2020-10-14 01:03:21,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:03:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:22,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:22,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:25,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:27,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:27,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 869 [2020-10-14 01:03:27,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:03:27,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5157 [2020-10-14 01:03:27,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:27,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:27,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:03:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:03:27,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:27,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:03:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:27,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:27,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:27,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:03:27,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:27,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:03:27,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:27,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:03:27,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:27,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:03:27,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:27,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:03:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:27,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:27,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:27,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:03:27,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:27,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 01:03:27,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:27,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:27,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:03:27,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:27,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:03:27,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:27,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:03:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:27,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:27,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:27,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:03:27,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:27,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 01:03:27,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:27,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:27,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:27,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:03:27,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 01:03:27,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:03:27,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078425707] [2020-10-14 01:03:27,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:03:27,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:03:27,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702429653] [2020-10-14 01:03:27,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:03:27,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:03:27,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:03:27,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:03:27,852 INFO L87 Difference]: Start difference. First operand 3429 states and 5326 transitions. Second operand 7 states. [2020-10-14 01:03:37,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:03:37,983 INFO L93 Difference]: Finished difference Result 10415 states and 16464 transitions. [2020-10-14 01:03:37,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:03:37,984 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 851 [2020-10-14 01:03:37,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:03:38,022 INFO L225 Difference]: With dead ends: 10415 [2020-10-14 01:03:38,022 INFO L226 Difference]: Without dead ends: 6992 [2020-10-14 01:03:38,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:03:38,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6992 states. [2020-10-14 01:03:38,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6992 to 6945. [2020-10-14 01:03:38,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6945 states. [2020-10-14 01:03:38,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6945 states to 6945 states and 9787 transitions. [2020-10-14 01:03:38,277 INFO L78 Accepts]: Start accepts. Automaton has 6945 states and 9787 transitions. Word has length 851 [2020-10-14 01:03:38,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:03:38,278 INFO L479 AbstractCegarLoop]: Abstraction has 6945 states and 9787 transitions. [2020-10-14 01:03:38,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:03:38,278 INFO L276 IsEmpty]: Start isEmpty. Operand 6945 states and 9787 transitions. [2020-10-14 01:03:38,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 910 [2020-10-14 01:03:38,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:03:38,346 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:03:38,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:03:38,346 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:03:38,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:03:38,347 INFO L82 PathProgramCache]: Analyzing trace with hash -2010414098, now seen corresponding path program 1 times [2020-10-14 01:03:38,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:03:38,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327005069] [2020-10-14 01:03:38,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:03:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:38,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:39,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:39,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:42,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:43,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:43,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 927 [2020-10-14 01:03:43,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:03:43,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-14 01:03:43,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:43,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:43,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:43,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:03:43,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 01:03:43,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:43,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:03:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:43,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:43,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:43,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:03:43,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:43,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:03:43,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:43,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:03:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:03:43,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:43,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:03:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:43,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:43,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:43,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:03:43,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:43,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 01:03:43,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:43,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:43,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:03:43,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:43,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:03:43,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 01:03:43,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:03:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:43,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:44,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:44,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 01:03:44,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:44,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 01:03:44,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:44,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:44,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:44,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:03:44,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 01:03:44,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:03:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:03:44,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327005069] [2020-10-14 01:03:44,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:03:44,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:03:44,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177509436] [2020-10-14 01:03:44,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:03:44,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:03:44,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:03:44,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:03:44,927 INFO L87 Difference]: Start difference. First operand 6945 states and 9787 transitions. Second operand 7 states. [2020-10-14 01:03:57,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:03:57,014 INFO L93 Difference]: Finished difference Result 21132 states and 31802 transitions. [2020-10-14 01:03:57,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:03:57,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 909 [2020-10-14 01:03:57,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:03:57,098 INFO L225 Difference]: With dead ends: 21132 [2020-10-14 01:03:57,098 INFO L226 Difference]: Without dead ends: 14193 [2020-10-14 01:03:57,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:03:57,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14193 states. [2020-10-14 01:03:57,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14193 to 14031. [2020-10-14 01:03:57,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14031 states. [2020-10-14 01:03:57,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14031 states to 14031 states and 19420 transitions. [2020-10-14 01:03:57,510 INFO L78 Accepts]: Start accepts. Automaton has 14031 states and 19420 transitions. Word has length 909 [2020-10-14 01:03:57,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:03:57,511 INFO L479 AbstractCegarLoop]: Abstraction has 14031 states and 19420 transitions. [2020-10-14 01:03:57,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:03:57,511 INFO L276 IsEmpty]: Start isEmpty. Operand 14031 states and 19420 transitions. [2020-10-14 01:03:57,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2020-10-14 01:03:57,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:03:57,569 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:03:57,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:03:57,569 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:03:57,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:03:57,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1934321274, now seen corresponding path program 1 times [2020-10-14 01:03:57,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:03:57,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518155882] [2020-10-14 01:03:57,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:03:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:57,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:57,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:01,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:02,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:02,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 928 [2020-10-14 01:04:02,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:04:02,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 01:04:02,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:02,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:04:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:04:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 01:04:02,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:04:02,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:04:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:02,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:02,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:02,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:04:02,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:02,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:04:02,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:02,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:02,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:04:02,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:02,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:04:02,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 01:04:02,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:04:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:02,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:02,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:02,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:04:02,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:02,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 01:04:02,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:02,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:04:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:02,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:04:02,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:04:02,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:04:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:02,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:03,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:03,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 01:04:03,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:03,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 01:04:03,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:03,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:03,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:04:03,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:04:03,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 01:04:03,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:03,699 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:04:03,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518155882] [2020-10-14 01:04:03,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:04:03,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:04:03,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025056123] [2020-10-14 01:04:03,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:04:03,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:04:03,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:04:03,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:04:03,702 INFO L87 Difference]: Start difference. First operand 14031 states and 19420 transitions. Second operand 7 states. [2020-10-14 01:04:14,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:04:14,287 INFO L93 Difference]: Finished difference Result 41783 states and 59644 transitions. [2020-10-14 01:04:14,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 01:04:14,288 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 910 [2020-10-14 01:04:14,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:04:14,404 INFO L225 Difference]: With dead ends: 41783 [2020-10-14 01:04:14,404 INFO L226 Difference]: Without dead ends: 27758 [2020-10-14 01:04:14,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:04:14,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27758 states. [2020-10-14 01:04:15,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27758 to 26909. [2020-10-14 01:04:15,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26909 states. [2020-10-14 01:04:15,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26909 states to 26909 states and 37662 transitions. [2020-10-14 01:04:15,243 INFO L78 Accepts]: Start accepts. Automaton has 26909 states and 37662 transitions. Word has length 910 [2020-10-14 01:04:15,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:04:15,243 INFO L479 AbstractCegarLoop]: Abstraction has 26909 states and 37662 transitions. [2020-10-14 01:04:15,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:04:15,244 INFO L276 IsEmpty]: Start isEmpty. Operand 26909 states and 37662 transitions. [2020-10-14 01:04:15,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 943 [2020-10-14 01:04:15,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:04:15,336 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:15,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:04:15,337 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:04:15,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:04:15,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1581737467, now seen corresponding path program 1 times [2020-10-14 01:04:15,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:04:15,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349255706] [2020-10-14 01:04:15,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:04:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:15,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:16,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:16,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:20,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:20,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 958 [2020-10-14 01:04:20,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:04:20,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 01:04:20,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:20,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:20,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:04:20,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:04:20,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 01:04:20,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:20,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:04:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:20,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:20,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:20,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:04:20,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:20,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:04:20,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:20,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:20,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:04:20,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:20,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:04:20,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:20,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:04:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:20,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:20,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:20,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 01:04:20,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:20,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 01:04:20,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:20,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:20,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:04:20,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:04:20,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 01:04:20,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:04:22,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349255706] [2020-10-14 01:04:22,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:04:22,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:04:22,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174748897] [2020-10-14 01:04:22,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:04:22,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:04:22,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:04:22,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:04:22,026 INFO L87 Difference]: Start difference. First operand 26909 states and 37662 transitions. Second operand 7 states. [2020-10-14 01:04:31,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:04:31,829 INFO L93 Difference]: Finished difference Result 59961 states and 84776 transitions. [2020-10-14 01:04:31,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:04:31,830 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 942 [2020-10-14 01:04:31,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:04:31,940 INFO L225 Difference]: With dead ends: 59961 [2020-10-14 01:04:31,940 INFO L226 Difference]: Without dead ends: 33058 [2020-10-14 01:04:32,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:04:32,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33058 states. [2020-10-14 01:04:32,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33058 to 32993. [2020-10-14 01:04:32,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32993 states. [2020-10-14 01:04:34,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32993 states to 32993 states and 45628 transitions. [2020-10-14 01:04:34,020 INFO L78 Accepts]: Start accepts. Automaton has 32993 states and 45628 transitions. Word has length 942 [2020-10-14 01:04:34,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:04:34,021 INFO L479 AbstractCegarLoop]: Abstraction has 32993 states and 45628 transitions. [2020-10-14 01:04:34,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:04:34,021 INFO L276 IsEmpty]: Start isEmpty. Operand 32993 states and 45628 transitions. [2020-10-14 01:04:34,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2020-10-14 01:04:34,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:04:34,085 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:34,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:04:34,086 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:04:34,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:04:34,087 INFO L82 PathProgramCache]: Analyzing trace with hash -863056810, now seen corresponding path program 1 times [2020-10-14 01:04:34,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:04:34,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056647943] [2020-10-14 01:04:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:04:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:34,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:34,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:39,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:39,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 979 [2020-10-14 01:04:39,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:04:39,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-14 01:04:39,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:39,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:39,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 01:04:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-14 01:04:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 822 [2020-10-14 01:04:39,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:39,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:04:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:39,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:39,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:39,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:04:39,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:39,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:04:39,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:39,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:04:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:04:39,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:39,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:04:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:39,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:39,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:39,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:04:39,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:39,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:04:39,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:39,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:39,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:04:39,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:39,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:04:39,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:39,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:04:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:39,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:39,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:39,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 01:04:39,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:39,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 01:04:39,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:39,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:04:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 01:04:39,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:04:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 01:04:40,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056647943] [2020-10-14 01:04:40,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:04:40,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 01:04:40,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928114546] [2020-10-14 01:04:40,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 01:04:40,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:04:40,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 01:04:40,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 01:04:40,707 INFO L87 Difference]: Start difference. First operand 32993 states and 45628 transitions. Second operand 6 states. [2020-10-14 01:04:53,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:04:53,240 INFO L93 Difference]: Finished difference Result 72733 states and 101655 transitions. [2020-10-14 01:04:53,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 01:04:53,240 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 961 [2020-10-14 01:04:53,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:04:53,377 INFO L225 Difference]: With dead ends: 72733 [2020-10-14 01:04:53,377 INFO L226 Difference]: Without dead ends: 39746 [2020-10-14 01:04:53,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:04:53,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39746 states. [2020-10-14 01:04:54,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39746 to 39727. [2020-10-14 01:04:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39727 states. [2020-10-14 01:04:54,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39727 states to 39727 states and 51327 transitions. [2020-10-14 01:04:54,150 INFO L78 Accepts]: Start accepts. Automaton has 39727 states and 51327 transitions. Word has length 961 [2020-10-14 01:04:54,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:04:54,152 INFO L479 AbstractCegarLoop]: Abstraction has 39727 states and 51327 transitions. [2020-10-14 01:04:54,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 01:04:54,152 INFO L276 IsEmpty]: Start isEmpty. Operand 39727 states and 51327 transitions. [2020-10-14 01:04:54,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2020-10-14 01:04:54,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:04:54,215 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:54,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 01:04:54,215 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:04:54,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:04:54,216 INFO L82 PathProgramCache]: Analyzing trace with hash 537378093, now seen corresponding path program 1 times [2020-10-14 01:04:54,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:04:54,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825930143] [2020-10-14 01:04:54,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:04:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:54,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:54,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:59,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:59,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1042 [2020-10-14 01:04:59,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:04:59,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 01:04:59,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:59,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:59,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:04:59,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:04:59,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 215 [2020-10-14 01:04:59,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:59,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:04:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:59,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:59,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:59,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:04:59,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:59,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:04:59,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:59,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:59,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:04:59,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:04:59,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:04:59,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:04:59,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:04:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:04:59,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:04:59,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:04:59,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-14 01:04:59,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:04:59,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 01:04:59,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:04:59,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:04:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:04:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:04:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-14 01:04:59,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:05:00,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825930143] [2020-10-14 01:05:00,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:05:00,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:05:00,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795260388] [2020-10-14 01:05:00,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:05:00,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:05:00,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:05:00,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:05:00,348 INFO L87 Difference]: Start difference. First operand 39727 states and 51327 transitions. Second operand 7 states. [2020-10-14 01:05:10,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:05:10,439 INFO L93 Difference]: Finished difference Result 108995 states and 144694 transitions. [2020-10-14 01:05:10,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:05:10,439 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1026 [2020-10-14 01:05:10,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:05:10,648 INFO L225 Difference]: With dead ends: 108995 [2020-10-14 01:05:10,649 INFO L226 Difference]: Without dead ends: 69274 [2020-10-14 01:05:10,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:05:10,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69274 states. [2020-10-14 01:05:11,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69274 to 65838. [2020-10-14 01:05:11,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65838 states. [2020-10-14 01:05:11,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65838 states to 65838 states and 82613 transitions. [2020-10-14 01:05:11,886 INFO L78 Accepts]: Start accepts. Automaton has 65838 states and 82613 transitions. Word has length 1026 [2020-10-14 01:05:11,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:05:11,886 INFO L479 AbstractCegarLoop]: Abstraction has 65838 states and 82613 transitions. [2020-10-14 01:05:11,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:05:11,886 INFO L276 IsEmpty]: Start isEmpty. Operand 65838 states and 82613 transitions. [2020-10-14 01:05:11,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1213 [2020-10-14 01:05:11,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:05:11,951 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:05:11,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 01:05:11,952 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:05:11,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:05:11,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1709099235, now seen corresponding path program 1 times [2020-10-14 01:05:11,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:05:11,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213623445] [2020-10-14 01:05:11,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:05:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:12,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:15,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:17,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:17,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1234 [2020-10-14 01:05:17,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:05:17,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-14 01:05:17,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:17,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:17,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:05:17,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 298 [2020-10-14 01:05:17,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 01:05:17,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:17,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:05:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:17,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:17,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:17,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:05:17,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:17,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:05:17,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:17,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:17,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:17,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:17,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:17,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:17,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:05:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:17,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:17,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:17,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:05:17,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:17,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:05:17,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:17,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:17,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:17,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:17,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:17,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:17,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:05:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:17,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:17,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:17,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-14 01:05:17,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:17,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 01:05:17,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:17,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:17,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:05:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 262 [2020-10-14 01:05:17,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:17,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 01:05:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:17,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:17,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:17,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 01:05:17,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:17,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 01:05:17,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:17,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:05:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 01:05:17,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:17,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-14 01:05:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:17,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:17,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:17,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 01:05:17,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:17,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 01:05:17,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:17,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:17,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:05:17,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:05:17,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 01:05:17,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:18,671 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 509 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 01:05:18,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213623445] [2020-10-14 01:05:18,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:05:18,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:05:18,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469245239] [2020-10-14 01:05:18,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:05:18,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:05:18,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:05:18,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:05:18,675 INFO L87 Difference]: Start difference. First operand 65838 states and 82613 transitions. Second operand 8 states. [2020-10-14 01:05:30,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:05:30,723 INFO L93 Difference]: Finished difference Result 152054 states and 196460 transitions. [2020-10-14 01:05:30,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:05:30,724 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1212 [2020-10-14 01:05:30,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:05:30,928 INFO L225 Difference]: With dead ends: 152054 [2020-10-14 01:05:30,928 INFO L226 Difference]: Without dead ends: 87056 [2020-10-14 01:05:31,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:05:31,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87056 states. [2020-10-14 01:05:32,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87056 to 87019. [2020-10-14 01:05:32,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87019 states. [2020-10-14 01:05:32,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87019 states to 87019 states and 110148 transitions. [2020-10-14 01:05:32,545 INFO L78 Accepts]: Start accepts. Automaton has 87019 states and 110148 transitions. Word has length 1212 [2020-10-14 01:05:32,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:05:32,546 INFO L479 AbstractCegarLoop]: Abstraction has 87019 states and 110148 transitions. [2020-10-14 01:05:32,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:05:32,547 INFO L276 IsEmpty]: Start isEmpty. Operand 87019 states and 110148 transitions. [2020-10-14 01:05:34,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1238 [2020-10-14 01:05:34,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:05:34,935 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:05:34,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 01:05:34,938 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:05:34,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:05:34,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1704844228, now seen corresponding path program 1 times [2020-10-14 01:05:34,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:05:34,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568235120] [2020-10-14 01:05:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:05:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:35,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:35,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:35,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:35,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:35,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:40,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:40,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1265 [2020-10-14 01:05:40,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 01:05:40,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 01:05:40,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:40,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:40,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:05:40,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 01:05:40,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 01:05:40,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:40,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:05:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:40,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:40,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:40,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:05:40,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:40,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:05:40,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:40,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:40,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:40,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:40,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:40,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:40,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:05:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:40,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:40,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:40,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:05:40,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:40,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:05:40,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:40,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:40,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:40,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:40,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:05:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:40,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:40,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:40,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:05:40,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:40,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:05:40,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:40,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:40,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:05:40,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:40,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 01:05:40,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:40,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 01:05:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:40,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:40,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:40,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 01:05:40,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:40,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 01:05:40,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:40,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:40,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:05:40,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:05:40,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 01:05:40,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:40,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 01:05:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:40,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:40,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:40,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-14 01:05:40,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:40,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 01:05:40,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:40,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:40,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:40,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 319 [2020-10-14 01:05:40,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:40,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:40,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 01:05:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:40,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:40,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:40,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 01:05:40,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:40,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 01:05:40,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:40,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:40,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:40,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:05:40,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:40,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:40,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-14 01:05:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:40,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:40,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:40,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:05:40,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:40,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:05:40,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:40,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 01:05:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:40,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:40,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-10-14 01:05:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:40,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:40,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:05:40,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:05:40,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:05:40,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:05:40,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:05:40,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:05:40,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:05:40,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 01:05:40,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:05:40,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:05:41,202 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 449 proven. 67 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 01:05:41,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568235120] [2020-10-14 01:05:41,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:05:41,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:05:41,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484010634] [2020-10-14 01:05:41,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:05:41,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:05:41,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:05:41,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:05:41,204 INFO L87 Difference]: Start difference. First operand 87019 states and 110148 transitions. Second operand 7 states. [2020-10-14 01:05:53,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:05:53,923 INFO L93 Difference]: Finished difference Result 199207 states and 255289 transitions. [2020-10-14 01:05:53,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:05:53,924 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1237 [2020-10-14 01:05:53,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:05:54,144 INFO L225 Difference]: With dead ends: 199207 [2020-10-14 01:05:54,145 INFO L226 Difference]: Without dead ends: 112186 [2020-10-14 01:05:54,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:05:54,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112186 states. [2020-10-14 01:05:55,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112186 to 99508. [2020-10-14 01:05:55,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99508 states. [2020-10-14 01:05:55,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99508 states to 99508 states and 118706 transitions. [2020-10-14 01:05:55,603 INFO L78 Accepts]: Start accepts. Automaton has 99508 states and 118706 transitions. Word has length 1237 [2020-10-14 01:05:55,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:05:55,603 INFO L479 AbstractCegarLoop]: Abstraction has 99508 states and 118706 transitions. [2020-10-14 01:05:55,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:05:55,603 INFO L276 IsEmpty]: Start isEmpty. Operand 99508 states and 118706 transitions. [2020-10-14 01:05:55,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1353 [2020-10-14 01:05:55,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:05:55,669 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:05:55,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 01:05:55,669 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:05:55,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:05:55,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1788689306, now seen corresponding path program 1 times [2020-10-14 01:05:55,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:05:55,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582934991] [2020-10-14 01:05:55,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:05:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:05:55,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:05:56,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:00,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:00,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1376 [2020-10-14 01:06:00,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:06:00,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 01:06:00,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:00,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:06:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 355 [2020-10-14 01:06:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-14 01:06:00,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:06:01,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:06:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:01,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:01,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:01,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:06:01,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:06:01,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:06:01,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:01,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:01,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:06:01,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:06:01,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:06:01,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:06:01,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:06:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:01,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:01,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:01,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-14 01:06:01,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:06:01,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 01:06:01,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:01,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:01,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:06:01,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:06:01,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:06:01,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:06:01,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 01:06:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:01,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:01,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:01,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:06:01,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:06:01,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:06:01,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:01,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:01,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:06:01,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:06:01,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:06:01,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:06:01,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 01:06:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:01,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:01,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:01,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 01:06:01,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:06:01,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:06:01,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:01,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:01,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:06:01,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:06:01,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:06:01,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:06:01,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-14 01:06:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:01,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:01,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:01,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 01:06:01,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:06:01,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 01:06:01,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:01,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:01,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:06:01,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:06:01,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 01:06:01,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:06:01,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-14 01:06:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:01,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:01,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:01,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 01:06:01,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:06:01,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 01:06:01,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:01,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:06:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:06:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 01:06:01,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:06:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 957 backedges. 822 proven. 2 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-10-14 01:06:03,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582934991] [2020-10-14 01:06:03,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:06:03,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:06:03,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328052686] [2020-10-14 01:06:03,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:06:03,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:06:03,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:06:03,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:06:03,251 INFO L87 Difference]: Start difference. First operand 99508 states and 118706 transitions. Second operand 7 states.