/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/Problem18_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:13:30,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:13:30,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:13:30,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:13:30,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:13:30,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:13:30,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:13:30,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:13:30,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:13:30,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:13:30,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:13:30,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:13:30,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:13:30,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:13:30,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:13:30,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:13:30,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:13:30,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:13:30,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:13:30,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:13:30,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:13:30,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:13:30,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:13:30,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:13:30,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:13:30,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:13:30,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:13:30,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:13:30,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:13:30,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:13:30,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:13:30,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:13:30,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:13:30,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:13:30,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:13:30,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:13:30,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:13:30,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:13:30,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:13:30,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:13:30,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:13:30,663 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 04:13:30,712 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:13:30,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:13:30,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:13:30,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:13:30,715 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:13:30,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:13:30,716 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:13:30,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:13:30,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:13:30,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:13:30,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:13:30,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:13:30,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:13:30,718 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:13:30,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:13:30,719 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:13:30,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:13:30,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:13:30,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:13:30,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:13:30,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:13:30,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:13:30,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:13:30,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:13:30,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:13:30,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:13:30,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:13:30,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:13:30,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:13:30,721 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 04:13:31,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:13:31,068 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:13:31,072 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:13:31,073 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:13:31,074 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:13:31,074 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label12.c [2020-10-14 04:13:31,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba18750fb/07115d5c0bc3477884dae2e1fa452134/FLAGd247b56c9 [2020-10-14 04:13:31,875 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:13:31,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label12.c [2020-10-14 04:13:31,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba18750fb/07115d5c0bc3477884dae2e1fa452134/FLAGd247b56c9 [2020-10-14 04:13:31,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba18750fb/07115d5c0bc3477884dae2e1fa452134 [2020-10-14 04:13:31,937 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:13:31,940 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:13:31,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:13:31,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:13:31,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:13:31,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:13:31" (1/1) ... [2020-10-14 04:13:31,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a529ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:31, skipping insertion in model container [2020-10-14 04:13:31,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:13:31" (1/1) ... [2020-10-14 04:13:31,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:13:32,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:13:33,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:13:33,386 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:13:33,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:13:33,905 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:13:33,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:33 WrapperNode [2020-10-14 04:13:33,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:13:33,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:13:33,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:13:33,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:13:33,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:33" (1/1) ... [2020-10-14 04:13:33,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:33" (1/1) ... [2020-10-14 04:13:34,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:33" (1/1) ... [2020-10-14 04:13:34,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:33" (1/1) ... [2020-10-14 04:13:34,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:33" (1/1) ... [2020-10-14 04:13:34,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:33" (1/1) ... [2020-10-14 04:13:34,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:33" (1/1) ... [2020-10-14 04:13:34,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:13:34,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:13:34,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:13:34,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:13:34,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:33" (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 04:13:34,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:13:34,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:13:34,320 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:13:34,321 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:13:34,321 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:13:34,321 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:13:34,321 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:13:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:13:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:13:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:13:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:13:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:13:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:13:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:13:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:13:40,616 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:13:40,617 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:13:40,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:13:40 BoogieIcfgContainer [2020-10-14 04:13:40,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:13:40,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:13:40,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:13:40,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:13:40,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:13:31" (1/3) ... [2020-10-14 04:13:40,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102eb47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:13:40, skipping insertion in model container [2020-10-14 04:13:40,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:33" (2/3) ... [2020-10-14 04:13:40,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102eb47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:13:40, skipping insertion in model container [2020-10-14 04:13:40,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:13:40" (3/3) ... [2020-10-14 04:13:40,639 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label12.c [2020-10-14 04:13:40,652 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:13:40,662 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:13:40,680 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:13:40,710 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:13:40,711 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:13:40,711 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:13:40,711 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:13:40,711 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:13:40,712 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:13:40,712 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:13:40,712 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:13:40,749 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 04:13:40,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 04:13:40,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:13:40,759 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] [2020-10-14 04:13:40,760 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:13:40,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:13:40,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1916525318, now seen corresponding path program 1 times [2020-10-14 04:13:40,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:13:40,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103677111] [2020-10-14 04:13:40,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:13:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:40,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:41,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:41,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 04:13:41,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:41,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-14 04:13:41,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:41,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:41,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:13:41,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:13:41,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 04:13:41,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:13:41,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:13:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:41,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:41,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:41,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:13:41,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:41,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:13:41,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:41,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:41,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:13:41,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:41,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:13:41,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:41,364 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 04:13:41,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103677111] [2020-10-14 04:13:41,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:13:41,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:13:41,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470184010] [2020-10-14 04:13:41,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:13:41,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:13:41,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:13:41,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:13:41,393 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-14 04:13:51,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:13:51,018 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-14 04:13:51,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:13:51,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-14 04:13:51,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:13:51,052 INFO L225 Difference]: With dead ends: 2270 [2020-10-14 04:13:51,052 INFO L226 Difference]: Without dead ends: 1432 [2020-10-14 04:13:51,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:13:51,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-14 04:13:51,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-14 04:13:51,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-14 04:13:51,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2020-10-14 04:13:51,222 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 23 [2020-10-14 04:13:51,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:13:51,223 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2020-10-14 04:13:51,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:13:51,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2020-10-14 04:13:51,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 04:13:51,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:13:51,233 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:13:51,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:13:51,234 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:13:51,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:13:51,234 INFO L82 PathProgramCache]: Analyzing trace with hash 2140535966, now seen corresponding path program 1 times [2020-10-14 04:13:51,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:13:51,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612497735] [2020-10-14 04:13:51,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:13:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:51,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:51,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:52,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:52,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 04:13:52,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:13:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-10-14 04:13:52,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:52,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:52,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:52,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:13:52,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 04:13:52,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:13:52,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:13:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:52,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:52,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:52,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:13:52,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:52,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:13:52,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:52,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:52,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:52,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:52,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:52,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:52,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:13:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:52,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:52,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:52,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:13:52,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:52,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 04:13:52,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:52,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:52,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:13:52,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:52,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:13:52,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:52,325 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:13:52,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612497735] [2020-10-14 04:13:52,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:13:52,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:13:52,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442350301] [2020-10-14 04:13:52,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:13:52,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:13:52,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:13:52,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:13:52,330 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand 6 states. [2020-10-14 04:14:08,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:14:08,770 INFO L93 Difference]: Finished difference Result 5696 states and 9019 transitions. [2020-10-14 04:14:08,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:14:08,771 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-10-14 04:14:08,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:14:08,801 INFO L225 Difference]: With dead ends: 5696 [2020-10-14 04:14:08,801 INFO L226 Difference]: Without dead ends: 4277 [2020-10-14 04:14:08,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:14:08,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2020-10-14 04:14:08,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 4273. [2020-10-14 04:14:08,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4273 states. [2020-10-14 04:14:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4273 states to 4273 states and 6252 transitions. [2020-10-14 04:14:08,961 INFO L78 Accepts]: Start accepts. Automaton has 4273 states and 6252 transitions. Word has length 93 [2020-10-14 04:14:08,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:14:08,962 INFO L479 AbstractCegarLoop]: Abstraction has 4273 states and 6252 transitions. [2020-10-14 04:14:08,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:14:08,962 INFO L276 IsEmpty]: Start isEmpty. Operand 4273 states and 6252 transitions. [2020-10-14 04:14:08,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 04:14:08,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:08,966 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:14:08,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:14:08,966 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:08,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:08,967 INFO L82 PathProgramCache]: Analyzing trace with hash -234642970, now seen corresponding path program 1 times [2020-10-14 04:14:08,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:08,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732891427] [2020-10-14 04:14:08,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:09,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:09,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:09,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:09,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 04:14:09,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:14:09,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-10-14 04:14:09,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:09,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:09,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:09,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:14:09,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 04:14:09,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:09,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:14:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:09,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:09,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:09,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:14:09,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:09,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:14:09,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:09,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:09,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:09,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:14:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:09,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:09,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:09,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:14:09,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:09,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 04:14:09,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:09,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:09,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:09,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:09,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:14:09,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:09,873 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:14:09,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732891427] [2020-10-14 04:14:09,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:14:09,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:14:09,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042106698] [2020-10-14 04:14:09,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:14:09,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:14:09,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:14:09,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:14:09,876 INFO L87 Difference]: Start difference. First operand 4273 states and 6252 transitions. Second operand 5 states. [2020-10-14 04:14:23,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:14:23,171 INFO L93 Difference]: Finished difference Result 12804 states and 18975 transitions. [2020-10-14 04:14:23,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:14:23,172 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-14 04:14:23,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:14:23,221 INFO L225 Difference]: With dead ends: 12804 [2020-10-14 04:14:23,221 INFO L226 Difference]: Without dead ends: 8537 [2020-10-14 04:14:23,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:14:23,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8537 states. [2020-10-14 04:14:23,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8537 to 7831. [2020-10-14 04:14:23,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7831 states. [2020-10-14 04:14:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7831 states to 7831 states and 10592 transitions. [2020-10-14 04:14:23,471 INFO L78 Accepts]: Start accepts. Automaton has 7831 states and 10592 transitions. Word has length 97 [2020-10-14 04:14:23,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:14:23,473 INFO L479 AbstractCegarLoop]: Abstraction has 7831 states and 10592 transitions. [2020-10-14 04:14:23,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:14:23,473 INFO L276 IsEmpty]: Start isEmpty. Operand 7831 states and 10592 transitions. [2020-10-14 04:14:23,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 04:14:23,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:23,487 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:14:23,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:14:23,488 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:23,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:23,490 INFO L82 PathProgramCache]: Analyzing trace with hash -819711902, now seen corresponding path program 1 times [2020-10-14 04:14:23,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:23,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257720701] [2020-10-14 04:14:23,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:23,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:23,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:23,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:24,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:24,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 04:14:24,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:14:24,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 943 [2020-10-14 04:14:24,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:24,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:24,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:24,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 04:14:24,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 04:14:24,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:24,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:14:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:24,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:24,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:24,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:14:24,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:24,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:14:24,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:24,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:24,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:24,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:24,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:24,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:24,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:14:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:24,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:24,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:24,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:14:24,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:24,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 04:14:24,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:24,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:24,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:24,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:14:24,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:14:24,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257720701] [2020-10-14 04:14:24,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:14:24,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:14:24,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507819364] [2020-10-14 04:14:24,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:14:24,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:14:24,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:14:24,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:14:24,748 INFO L87 Difference]: Start difference. First operand 7831 states and 10592 transitions. Second operand 5 states. [2020-10-14 04:14:34,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:14:34,021 INFO L93 Difference]: Finished difference Result 19914 states and 27906 transitions. [2020-10-14 04:14:34,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:14:34,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-14 04:14:34,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:14:34,092 INFO L225 Difference]: With dead ends: 19914 [2020-10-14 04:14:34,092 INFO L226 Difference]: Without dead ends: 12089 [2020-10-14 04:14:34,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:14:34,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12089 states. [2020-10-14 04:14:34,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12089 to 10678. [2020-10-14 04:14:34,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10678 states. [2020-10-14 04:14:34,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10678 states to 10678 states and 13919 transitions. [2020-10-14 04:14:34,419 INFO L78 Accepts]: Start accepts. Automaton has 10678 states and 13919 transitions. Word has length 111 [2020-10-14 04:14:34,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:14:34,422 INFO L479 AbstractCegarLoop]: Abstraction has 10678 states and 13919 transitions. [2020-10-14 04:14:34,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:14:34,422 INFO L276 IsEmpty]: Start isEmpty. Operand 10678 states and 13919 transitions. [2020-10-14 04:14:34,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 04:14:34,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:34,431 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:14:34,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:14:34,432 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:34,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:34,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1199782291, now seen corresponding path program 1 times [2020-10-14 04:14:34,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:34,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919038870] [2020-10-14 04:14:34,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:34,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:34,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:34,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 04:14:34,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:34,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-14 04:14:34,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:34,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:34,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:14:34,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:14:34,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 04:14:34,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:34,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:14:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:34,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:34,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:34,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:14:34,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:34,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:14:34,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:34,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:34,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:34,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:34,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:14:34,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:34,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:14:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:34,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:35,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:35,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:14:35,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:35,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 04:14:35,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:35,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:35,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:35,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:14:35,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 04:14:35,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:14:35,168 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:14:35,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919038870] [2020-10-14 04:14:35,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:14:35,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:14:35,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664814396] [2020-10-14 04:14:35,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:14:35,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:14:35,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:14:35,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:14:35,176 INFO L87 Difference]: Start difference. First operand 10678 states and 13919 transitions. Second operand 7 states. [2020-10-14 04:14:44,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:14:44,778 INFO L93 Difference]: Finished difference Result 26480 states and 35763 transitions. [2020-10-14 04:14:44,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:14:44,780 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-14 04:14:44,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:14:44,840 INFO L225 Difference]: With dead ends: 26480 [2020-10-14 04:14:44,840 INFO L226 Difference]: Without dead ends: 14385 [2020-10-14 04:14:44,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:14:44,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14385 states. [2020-10-14 04:14:45,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14385 to 13659. [2020-10-14 04:14:45,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13659 states. [2020-10-14 04:14:45,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13659 states to 13659 states and 17403 transitions. [2020-10-14 04:14:45,223 INFO L78 Accepts]: Start accepts. Automaton has 13659 states and 17403 transitions. Word has length 118 [2020-10-14 04:14:45,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:14:45,223 INFO L479 AbstractCegarLoop]: Abstraction has 13659 states and 17403 transitions. [2020-10-14 04:14:45,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:14:45,223 INFO L276 IsEmpty]: Start isEmpty. Operand 13659 states and 17403 transitions. [2020-10-14 04:14:45,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 04:14:45,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:45,226 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:14:45,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:14:45,226 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:45,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:45,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1618208947, now seen corresponding path program 1 times [2020-10-14 04:14:45,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:45,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433395720] [2020-10-14 04:14:45,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:45,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:45,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:46,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:46,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 04:14:46,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:14:46,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1311 [2020-10-14 04:14:46,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:46,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:46,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 04:14:46,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 04:14:46,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:14:46,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:14:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:46,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:46,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:46,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:14:46,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:46,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:14:46,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:46,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:46,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:46,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:46,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:46,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:46,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:14:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:46,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:46,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:46,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 04:14:46,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:46,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 04:14:46,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:46,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:46,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:46,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:46,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 04:14:46,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:46,919 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:14:46,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433395720] [2020-10-14 04:14:46,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:14:46,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:14:46,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416454912] [2020-10-14 04:14:46,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:14:46,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:14:46,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:14:46,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:14:46,925 INFO L87 Difference]: Start difference. First operand 13659 states and 17403 transitions. Second operand 6 states. [2020-10-14 04:15:00,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:15:00,363 INFO L93 Difference]: Finished difference Result 37957 states and 50964 transitions. [2020-10-14 04:15:00,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:15:00,365 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-10-14 04:15:00,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:15:00,465 INFO L225 Difference]: With dead ends: 37957 [2020-10-14 04:15:00,465 INFO L226 Difference]: Without dead ends: 24304 [2020-10-14 04:15:00,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:15:00,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24304 states. [2020-10-14 04:15:00,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24304 to 20775. [2020-10-14 04:15:00,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20775 states. [2020-10-14 04:15:01,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20775 states to 20775 states and 27158 transitions. [2020-10-14 04:15:01,004 INFO L78 Accepts]: Start accepts. Automaton has 20775 states and 27158 transitions. Word has length 134 [2020-10-14 04:15:01,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:15:01,005 INFO L479 AbstractCegarLoop]: Abstraction has 20775 states and 27158 transitions. [2020-10-14 04:15:01,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:15:01,006 INFO L276 IsEmpty]: Start isEmpty. Operand 20775 states and 27158 transitions. [2020-10-14 04:15:01,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 04:15:01,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:15:01,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:15:01,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:15:01,011 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:15:01,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:15:01,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1625746489, now seen corresponding path program 1 times [2020-10-14 04:15:01,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:15:01,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207161129] [2020-10-14 04:15:01,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:15:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:01,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:01,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:02,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:02,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 04:15:02,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:15:02,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1661 [2020-10-14 04:15:02,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:02,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:15:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 04:15:02,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:02,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:15:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:02,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:02,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:02,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:15:02,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:02,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:15:02,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:02,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:02,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:02,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:02,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:02,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:02,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:15:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:02,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:02,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:02,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:15:02,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:02,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 04:15:02,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:02,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:02,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:02,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:02,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:15:02,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:03,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:15:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:03,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:03,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:03,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:15:03,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:03,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 04:15:03,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:03,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:03,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:03,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:15:03,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 04:15:03,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:03,397 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:15:03,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207161129] [2020-10-14 04:15:03,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:15:03,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:15:03,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749006521] [2020-10-14 04:15:03,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:15:03,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:15:03,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:15:03,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:15:03,401 INFO L87 Difference]: Start difference. First operand 20775 states and 27158 transitions. Second operand 8 states. [2020-10-14 04:15:21,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:15:21,942 INFO L93 Difference]: Finished difference Result 47530 states and 62449 transitions. [2020-10-14 04:15:21,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:15:21,945 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 240 [2020-10-14 04:15:21,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:15:22,028 INFO L225 Difference]: With dead ends: 47530 [2020-10-14 04:15:22,029 INFO L226 Difference]: Without dead ends: 25283 [2020-10-14 04:15:22,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:15:22,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25283 states. [2020-10-14 04:15:22,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25283 to 23856. [2020-10-14 04:15:22,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23856 states. [2020-10-14 04:15:22,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23856 states to 23856 states and 26861 transitions. [2020-10-14 04:15:22,571 INFO L78 Accepts]: Start accepts. Automaton has 23856 states and 26861 transitions. Word has length 240 [2020-10-14 04:15:22,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:15:22,572 INFO L479 AbstractCegarLoop]: Abstraction has 23856 states and 26861 transitions. [2020-10-14 04:15:22,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:15:22,572 INFO L276 IsEmpty]: Start isEmpty. Operand 23856 states and 26861 transitions. [2020-10-14 04:15:22,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-14 04:15:22,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:15:22,586 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, 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] [2020-10-14 04:15:22,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:15:22,587 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:15:22,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:15:22,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1419131365, now seen corresponding path program 1 times [2020-10-14 04:15:22,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:15:22,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313365825] [2020-10-14 04:15:22,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:15:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:22,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:22,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:22,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:27,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:27,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-14 04:15:27,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:15:27,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 04:15:27,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:27,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:27,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:27,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:15:27,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 04:15:27,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:27,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:15:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:27,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:27,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:27,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:15:27,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:27,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:15:27,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:27,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:27,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:27,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:27,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:15:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:27,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:27,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:27,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:15:27,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:27,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 04:15:27,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:27,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:27,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:27,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:27,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:15:27,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:28,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:15:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:28,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:28,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:28,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 04:15:28,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:28,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 04:15:28,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:28,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:15:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 04:15:28,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:28,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 04:15:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:28,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:28,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:28,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:15:28,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:28,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 04:15:28,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:28,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:28,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:28,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 04:15:28,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:28,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:28,703 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 155 proven. 94 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-14 04:15:28,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313365825] [2020-10-14 04:15:28,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:15:28,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:15:28,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139013056] [2020-10-14 04:15:28,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:15:28,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:15:28,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:15:28,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:15:28,707 INFO L87 Difference]: Start difference. First operand 23856 states and 26861 transitions. Second operand 7 states. [2020-10-14 04:15:37,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:15:37,891 INFO L93 Difference]: Finished difference Result 47791 states and 53893 transitions. [2020-10-14 04:15:37,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:15:37,893 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 346 [2020-10-14 04:15:37,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:15:37,972 INFO L225 Difference]: With dead ends: 47791 [2020-10-14 04:15:37,973 INFO L226 Difference]: Without dead ends: 23945 [2020-10-14 04:15:38,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:15:38,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23945 states. [2020-10-14 04:15:38,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23945 to 23215. [2020-10-14 04:15:38,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23215 states. [2020-10-14 04:15:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23215 states to 23215 states and 25999 transitions. [2020-10-14 04:15:38,399 INFO L78 Accepts]: Start accepts. Automaton has 23215 states and 25999 transitions. Word has length 346 [2020-10-14 04:15:38,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:15:38,399 INFO L479 AbstractCegarLoop]: Abstraction has 23215 states and 25999 transitions. [2020-10-14 04:15:38,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:15:38,400 INFO L276 IsEmpty]: Start isEmpty. Operand 23215 states and 25999 transitions. [2020-10-14 04:15:38,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-14 04:15:38,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:15:38,417 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, 2, 2, 2, 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] [2020-10-14 04:15:38,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:15:38,418 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:15:38,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:15:38,419 INFO L82 PathProgramCache]: Analyzing trace with hash 2036860119, now seen corresponding path program 1 times [2020-10-14 04:15:38,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:15:38,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785720334] [2020-10-14 04:15:38,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:15:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:38,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:38,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:39,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:40,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:43,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:43,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-14 04:15:43,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:15:43,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 04:15:43,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:43,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:43,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:43,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:15:43,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 04:15:43,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:43,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:15:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:43,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:43,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:43,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:15:43,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:43,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:15:43,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:43,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:43,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:43,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:43,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:15:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:43,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:43,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:43,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:15:43,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:43,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 04:15:43,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:43,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:15:43,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:43,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:15:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:43,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:44,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:44,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 04:15:44,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:44,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-14 04:15:44,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:44,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:44,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:44,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:15:44,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 04:15:44,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:44,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-14 04:15:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:44,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:44,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:44,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:15:44,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:44,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 04:15:44,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:44,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:44,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:44,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 04:15:44,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:44,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 171 proven. 94 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-14 04:15:44,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785720334] [2020-10-14 04:15:44,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:15:44,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:15:44,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403411988] [2020-10-14 04:15:44,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:15:44,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:15:44,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:15:44,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:15:44,860 INFO L87 Difference]: Start difference. First operand 23215 states and 25999 transitions. Second operand 8 states. [2020-10-14 04:15:58,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:15:58,729 INFO L93 Difference]: Finished difference Result 60885 states and 69399 transitions. [2020-10-14 04:15:58,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:15:58,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 364 [2020-10-14 04:15:58,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:15:58,836 INFO L225 Difference]: With dead ends: 60885 [2020-10-14 04:15:58,836 INFO L226 Difference]: Without dead ends: 37680 [2020-10-14 04:15:58,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:15:58,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37680 states. [2020-10-14 04:15:59,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37680 to 36956. [2020-10-14 04:15:59,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36956 states. [2020-10-14 04:15:59,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36956 states to 36956 states and 42082 transitions. [2020-10-14 04:15:59,497 INFO L78 Accepts]: Start accepts. Automaton has 36956 states and 42082 transitions. Word has length 364 [2020-10-14 04:15:59,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:15:59,498 INFO L479 AbstractCegarLoop]: Abstraction has 36956 states and 42082 transitions. [2020-10-14 04:15:59,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:15:59,498 INFO L276 IsEmpty]: Start isEmpty. Operand 36956 states and 42082 transitions. [2020-10-14 04:15:59,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-10-14 04:15:59,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:15:59,515 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-14 04:15:59,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:15:59,515 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:15:59,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:15:59,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1288070954, now seen corresponding path program 1 times [2020-10-14 04:15:59,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:15:59,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906570560] [2020-10-14 04:15:59,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:15:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:59,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:59,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:01,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:04,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:04,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-14 04:16:04,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:16:04,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-14 04:16:04,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:04,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:04,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 04:16:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 04:16:04,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:16:04,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:04,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:04,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:04,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:04,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:04,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:16:04,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:04,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:04,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:04,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:04,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:04,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:04,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:04,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:04,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:04,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:16:04,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:04,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 04:16:04,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:04,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:04,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:04,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 04:16:04,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:16:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:04,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:04,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:04,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:16:04,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:04,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 04:16:04,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:04,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:04,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:04,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:04,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:16:04,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:04,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 04:16:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:04,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:05,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:05,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 04:16:05,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:05,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 04:16:05,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:05,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:05,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:05,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:16:05,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 04:16:05,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:05,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-14 04:16:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:05,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:05,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:05,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:16:05,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:05,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 04:16:05,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:05,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:05,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:05,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 04:16:05,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:05,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:05,501 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 232 proven. 94 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-10-14 04:16:05,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906570560] [2020-10-14 04:16:05,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:05,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:16:05,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018826796] [2020-10-14 04:16:05,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:16:05,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:05,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:16:05,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:16:05,503 INFO L87 Difference]: Start difference. First operand 36956 states and 42082 transitions. Second operand 7 states. [2020-10-14 04:16:15,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:15,899 INFO L93 Difference]: Finished difference Result 81981 states and 94311 transitions. [2020-10-14 04:16:15,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:16:15,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 385 [2020-10-14 04:16:15,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:16,042 INFO L225 Difference]: With dead ends: 81981 [2020-10-14 04:16:16,042 INFO L226 Difference]: Without dead ends: 45035 [2020-10-14 04:16:16,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 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 04:16:16,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45035 states. [2020-10-14 04:16:17,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45035 to 45002. [2020-10-14 04:16:17,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45002 states. [2020-10-14 04:16:17,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45002 states to 45002 states and 51472 transitions. [2020-10-14 04:16:17,101 INFO L78 Accepts]: Start accepts. Automaton has 45002 states and 51472 transitions. Word has length 385 [2020-10-14 04:16:17,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:17,101 INFO L479 AbstractCegarLoop]: Abstraction has 45002 states and 51472 transitions. [2020-10-14 04:16:17,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:16:17,102 INFO L276 IsEmpty]: Start isEmpty. Operand 45002 states and 51472 transitions. [2020-10-14 04:16:17,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-10-14 04:16:17,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:17,120 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-14 04:16:17,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:16:17,121 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:17,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:17,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1358401773, now seen corresponding path program 1 times [2020-10-14 04:16:17,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:17,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532973531] [2020-10-14 04:16:17,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:17,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:17,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:17,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:19,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:22,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:22,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-14 04:16:22,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:16:22,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 04:16:22,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:22,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:22,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:22,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-14 04:16:22,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 04:16:22,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:22,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:22,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:22,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:22,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:22,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:22,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:16:22,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:22,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:22,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:22,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:22,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:22,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:22,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:22,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:22,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:22,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:16:22,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:22,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 04:16:22,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:22,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:22,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:22,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:22,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:22,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:22,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:16:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:22,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:22,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:22,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:16:22,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:22,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 04:16:22,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:22,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 04:16:22,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:22,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-14 04:16:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:22,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:22,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:22,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 04:16:22,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:22,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 04:16:22,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:22,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:22,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:22,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:16:22,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 04:16:22,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:22,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-10-14 04:16:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:22,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:22,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:22,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:16:22,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:22,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 04:16:22,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:22,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 04:16:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:22,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 233 proven. 94 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2020-10-14 04:16:23,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532973531] [2020-10-14 04:16:23,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:23,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:16:23,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777534139] [2020-10-14 04:16:23,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:16:23,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:23,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:16:23,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:16:23,056 INFO L87 Difference]: Start difference. First operand 45002 states and 51472 transitions. Second operand 7 states. [2020-10-14 04:16:33,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:33,382 INFO L93 Difference]: Finished difference Result 92511 states and 108945 transitions. [2020-10-14 04:16:33,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:16:33,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 386 [2020-10-14 04:16:33,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:33,536 INFO L225 Difference]: With dead ends: 92511 [2020-10-14 04:16:33,536 INFO L226 Difference]: Without dead ends: 47519 [2020-10-14 04:16:33,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 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 04:16:33,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47519 states. [2020-10-14 04:16:34,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47519 to 47204. [2020-10-14 04:16:34,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47204 states. [2020-10-14 04:16:35,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47204 states to 47204 states and 54088 transitions. [2020-10-14 04:16:35,045 INFO L78 Accepts]: Start accepts. Automaton has 47204 states and 54088 transitions. Word has length 386 [2020-10-14 04:16:35,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:35,046 INFO L479 AbstractCegarLoop]: Abstraction has 47204 states and 54088 transitions. [2020-10-14 04:16:35,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:16:35,046 INFO L276 IsEmpty]: Start isEmpty. Operand 47204 states and 54088 transitions. [2020-10-14 04:16:35,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2020-10-14 04:16:35,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:35,063 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-14 04:16:35,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:16:35,064 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:35,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:35,065 INFO L82 PathProgramCache]: Analyzing trace with hash -814846042, now seen corresponding path program 1 times [2020-10-14 04:16:35,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:35,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679432174] [2020-10-14 04:16:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:35,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:35,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:35,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:37,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:40,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:40,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-14 04:16:40,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:16:40,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 04:16:40,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:40,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-14 04:16:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 04:16:40,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:40,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:40,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:40,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:40,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:40,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:40,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:16:40,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:40,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:40,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:40,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:40,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:40,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:40,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:16:40,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:40,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 04:16:40,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:40,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:40,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:40,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:40,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:40,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:40,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:16:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:40,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:40,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:40,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 04:16:40,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:40,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 04:16:40,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:40,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:40,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:40,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:40,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 04:16:40,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:40,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-14 04:16:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:40,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:40,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:40,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 04:16:40,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:40,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 04:16:40,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:40,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:16:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 04:16:40,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:40,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-14 04:16:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:40,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:40,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:40,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:16:40,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:40,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 04:16:40,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:40,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:40,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:40,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 04:16:40,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:40,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:40,687 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 250 proven. 94 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2020-10-14 04:16:40,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679432174] [2020-10-14 04:16:40,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:40,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:16:40,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223738190] [2020-10-14 04:16:40,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:16:40,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:40,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:16:40,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:16:40,689 INFO L87 Difference]: Start difference. First operand 47204 states and 54088 transitions. Second operand 7 states. [2020-10-14 04:16:54,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:54,372 INFO L93 Difference]: Finished difference Result 101791 states and 119815 transitions. [2020-10-14 04:16:54,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:16:54,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 403 [2020-10-14 04:16:54,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:54,566 INFO L225 Difference]: With dead ends: 101791 [2020-10-14 04:16:54,566 INFO L226 Difference]: Without dead ends: 54597 [2020-10-14 04:16:54,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:16:54,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54597 states. [2020-10-14 04:16:55,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54597 to 54282. [2020-10-14 04:16:55,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54282 states. [2020-10-14 04:16:55,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54282 states to 54282 states and 61508 transitions. [2020-10-14 04:16:55,568 INFO L78 Accepts]: Start accepts. Automaton has 54282 states and 61508 transitions. Word has length 403 [2020-10-14 04:16:55,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:55,569 INFO L479 AbstractCegarLoop]: Abstraction has 54282 states and 61508 transitions. [2020-10-14 04:16:55,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:16:55,569 INFO L276 IsEmpty]: Start isEmpty. Operand 54282 states and 61508 transitions. [2020-10-14 04:16:55,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-14 04:16:55,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:55,584 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-14 04:16:55,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:16:55,584 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:55,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:55,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1007572758, now seen corresponding path program 1 times [2020-10-14 04:16:55,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:55,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903302904] [2020-10-14 04:16:55,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:55,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:55,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:58,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:00,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:00,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-14 04:17:00,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:17:00,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 04:17:00,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:00,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:00,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:00,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 04:17:00,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 04:17:00,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:00,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:17:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:00,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:00,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:00,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:17:00,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:00,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:17:00,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:00,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:00,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:00,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:00,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:00,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:00,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:17:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:00,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:00,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:00,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:17:00,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:00,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:17:00,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:00,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:00,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:00,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:17:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:00,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:00,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:00,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:17:00,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:00,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:17:00,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:00,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:00,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:17:00,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:00,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:17:00,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:00,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 04:17:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:00,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:00,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:00,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 04:17:00,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:00,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 04:17:00,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:00,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:00,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:00,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:17:00,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 04:17:00,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:00,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-10-14 04:17:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:00,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:01,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:01,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:17:01,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:01,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 04:17:01,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:01,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:01,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:01,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 04:17:01,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:01,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 232 proven. 94 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-10-14 04:17:01,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903302904] [2020-10-14 04:17:01,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:17:01,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:17:01,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654189904] [2020-10-14 04:17:01,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:17:01,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:17:01,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:17:01,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:17:01,115 INFO L87 Difference]: Start difference. First operand 54282 states and 61508 transitions. Second operand 7 states.