/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/Problem17_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:02:01,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:02:01,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:02:01,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:02:01,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:02:01,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:02:01,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:02:01,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:02:01,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:02:01,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:02:01,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:02:01,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:02:01,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:02:01,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:02:01,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:02:01,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:02:01,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:02:01,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:02:01,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:02:01,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:02:01,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:02:01,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:02:01,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:02:01,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:02:01,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:02:01,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:02:01,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:02:01,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:02:01,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:02:01,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:02:01,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:02:01,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:02:01,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:02:01,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:02:01,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:02:01,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:02:01,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:02:01,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:02:01,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:02:01,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:02:01,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:02:01,401 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 04:02:01,443 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:02:01,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:02:01,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:02:01,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:02:01,446 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:02:01,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:02:01,447 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:02:01,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:02:01,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:02:01,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:02:01,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:02:01,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:02:01,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:02:01,449 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:02:01,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:02:01,450 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:02:01,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:02:01,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:02:01,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:02:01,451 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:02:01,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:02:01,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:02:01,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:02:01,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:02:01,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:02:01,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:02:01,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:02:01,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:02:01,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:02:01,452 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 04:02:01,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:02:01,771 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:02:01,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:02:01,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:02:01,781 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:02:01,782 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label32.c [2020-10-14 04:02:01,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98831795c/4a407d0b5ce640928051beb6a364c233/FLAG2cbcc192e [2020-10-14 04:02:02,587 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:02:02,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label32.c [2020-10-14 04:02:02,618 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98831795c/4a407d0b5ce640928051beb6a364c233/FLAG2cbcc192e [2020-10-14 04:02:02,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98831795c/4a407d0b5ce640928051beb6a364c233 [2020-10-14 04:02:02,723 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:02:02,725 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:02:02,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:02:02,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:02:02,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:02:02,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:02:02" (1/1) ... [2020-10-14 04:02:02,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e64c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:02, skipping insertion in model container [2020-10-14 04:02:02,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:02:02" (1/1) ... [2020-10-14 04:02:02,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:02:02,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:02:04,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:02:04,228 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:02:04,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:02:04,609 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:02:04,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:04 WrapperNode [2020-10-14 04:02:04,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:02:04,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:02:04,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:02:04,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:02:04,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:04" (1/1) ... [2020-10-14 04:02:04,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:04" (1/1) ... [2020-10-14 04:02:04,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:04" (1/1) ... [2020-10-14 04:02:04,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:04" (1/1) ... [2020-10-14 04:02:04,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:04" (1/1) ... [2020-10-14 04:02:04,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:04" (1/1) ... [2020-10-14 04:02:04,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:04" (1/1) ... [2020-10-14 04:02:04,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:02:04,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:02:04,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:02:04,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:02:04,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:04" (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 04:02:04,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:02:04,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:02:04,980 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:02:04,980 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:02:04,980 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:02:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:02:04,981 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:02:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:02:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:02:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:02:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:02:04,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:02:04,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:02:11,849 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:02:11,849 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:02:11,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:02:11 BoogieIcfgContainer [2020-10-14 04:02:11,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:02:11,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:02:11,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:02:11,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:02:11,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:02:02" (1/3) ... [2020-10-14 04:02:11,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa1f6d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:02:11, skipping insertion in model container [2020-10-14 04:02:11,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:04" (2/3) ... [2020-10-14 04:02:11,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa1f6d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:02:11, skipping insertion in model container [2020-10-14 04:02:11,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:02:11" (3/3) ... [2020-10-14 04:02:11,870 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label32.c [2020-10-14 04:02:11,881 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:02:11,890 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:02:11,905 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:02:11,935 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:02:11,936 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:02:11,936 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:02:11,936 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:02:11,936 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:02:11,936 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:02:11,936 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:02:11,937 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:02:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 04:02:11,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 04:02:11,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:02:11,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:02:11,979 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:02:11,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:02:11,986 INFO L82 PathProgramCache]: Analyzing trace with hash -461510759, now seen corresponding path program 1 times [2020-10-14 04:02:11,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:02:11,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507926475] [2020-10-14 04:02:11,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:02:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:12,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:12,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:12,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 04:02:12,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:12,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-14 04:02:12,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:12,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:12,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:02:12,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:02:12,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 04:02:12,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:02:12,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:02:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:12,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:12,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:12,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:02:12,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:12,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 04:02:12,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:12,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:12,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:02:12,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:02:12,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:12,943 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 04:02:12,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507926475] [2020-10-14 04:02:12,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:02:12,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:02:12,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820813698] [2020-10-14 04:02:12,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:02:12,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:02:12,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:02:12,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:02:12,973 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 04:02:23,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:02:23,400 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 04:02:23,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:02:23,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-14 04:02:23,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:02:23,434 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 04:02:23,434 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 04:02:23,449 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 04:02:23,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 04:02:23,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 04:02:23,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 04:02:23,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 04:02:23,588 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 54 [2020-10-14 04:02:23,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:02:23,589 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 04:02:23,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:02:23,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 04:02:23,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 04:02:23,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:02:23,602 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:02:23,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:02:23,602 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:02:23,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:02:23,603 INFO L82 PathProgramCache]: Analyzing trace with hash -564903324, now seen corresponding path program 1 times [2020-10-14 04:02:23,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:02:23,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308857525] [2020-10-14 04:02:23,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:02:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:23,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:24,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:24,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:24,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:24,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 04:02:24,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:02:24,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1166 [2020-10-14 04:02:24,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:24,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:24,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:02:24,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:02:24,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 04:02:24,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:24,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:02:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:24,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:24,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:24,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:02:24,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:24,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:02:24,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:24,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:02:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:02:24,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:24,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:02:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:24,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:25,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:25,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:02:25,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:25,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 04:02:25,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:25,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:25,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:02:25,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:25,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:02:25,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:02:25,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308857525] [2020-10-14 04:02:25,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:02:25,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:02:25,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176076899] [2020-10-14 04:02:25,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:02:25,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:02:25,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:02:25,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:02:25,108 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 5 states. [2020-10-14 04:02:34,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:02:34,629 INFO L93 Difference]: Finished difference Result 2884 states and 4479 transitions. [2020-10-14 04:02:34,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:02:34,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-14 04:02:34,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:02:34,643 INFO L225 Difference]: With dead ends: 2884 [2020-10-14 04:02:34,643 INFO L226 Difference]: Without dead ends: 1888 [2020-10-14 04:02:34,647 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 04:02:34,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2020-10-14 04:02:34,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1884. [2020-10-14 04:02:34,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-14 04:02:34,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2587 transitions. [2020-10-14 04:02:34,713 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2587 transitions. Word has length 125 [2020-10-14 04:02:34,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:02:34,716 INFO L479 AbstractCegarLoop]: Abstraction has 1884 states and 2587 transitions. [2020-10-14 04:02:34,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:02:34,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2587 transitions. [2020-10-14 04:02:34,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 04:02:34,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:02:34,727 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:02:34,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:02:34,727 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:02:34,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:02:34,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1192538896, now seen corresponding path program 1 times [2020-10-14 04:02:34,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:02:34,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894757221] [2020-10-14 04:02:34,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:02:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:34,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:35,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:36,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:36,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 04:02:36,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:02:36,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1385 [2020-10-14 04:02:36,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:36,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:36,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:02:36,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:02:36,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 04:02:36,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:36,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:02:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:36,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:36,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:36,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:02:36,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:36,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:02:36,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:36,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:36,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:02:36,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:36,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:02:36,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:36,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:02:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:36,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:36,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:36,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:02:36,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:36,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 04:02:36,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:36,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:36,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:02:36,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:02:36,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 04:02:36,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:36,676 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:02:36,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894757221] [2020-10-14 04:02:36,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:02:36,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:02:36,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412212031] [2020-10-14 04:02:36,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:02:36,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:02:36,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:02:36,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:02:36,680 INFO L87 Difference]: Start difference. First operand 1884 states and 2587 transitions. Second operand 8 states. [2020-10-14 04:02:55,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:02:55,806 INFO L93 Difference]: Finished difference Result 7428 states and 10469 transitions. [2020-10-14 04:02:55,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:02:55,808 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2020-10-14 04:02:55,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:02:55,843 INFO L225 Difference]: With dead ends: 7428 [2020-10-14 04:02:55,843 INFO L226 Difference]: Without dead ends: 5550 [2020-10-14 04:02:55,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:02:55,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5550 states. [2020-10-14 04:02:56,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5550 to 5489. [2020-10-14 04:02:56,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5489 states. [2020-10-14 04:02:56,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5489 states to 5489 states and 7195 transitions. [2020-10-14 04:02:56,048 INFO L78 Accepts]: Start accepts. Automaton has 5489 states and 7195 transitions. Word has length 128 [2020-10-14 04:02:56,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:02:56,050 INFO L479 AbstractCegarLoop]: Abstraction has 5489 states and 7195 transitions. [2020-10-14 04:02:56,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:02:56,050 INFO L276 IsEmpty]: Start isEmpty. Operand 5489 states and 7195 transitions. [2020-10-14 04:02:56,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 04:02:56,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:02:56,058 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:02:56,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:02:56,059 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:02:56,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:02:56,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1428705364, now seen corresponding path program 1 times [2020-10-14 04:02:56,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:02:56,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875530595] [2020-10-14 04:02:56,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:02:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:56,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:56,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:56,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:57,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:57,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 04:02:57,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:02:57,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1132 [2020-10-14 04:02:57,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:57,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:57,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:02:57,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 04:02:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 04:02:57,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:57,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:02:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:57,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:57,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:57,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:02:57,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:57,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:02:57,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:57,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:57,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:02:57,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:57,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:02:57,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:57,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:02:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:57,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:57,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:57,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 04:02:57,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:57,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 04:02:57,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:57,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:57,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:02:57,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:57,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:02:57,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:02:57,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875530595] [2020-10-14 04:02:57,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:02:57,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:02:57,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989074792] [2020-10-14 04:02:57,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:02:57,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:02:57,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:02:57,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:02:57,492 INFO L87 Difference]: Start difference. First operand 5489 states and 7195 transitions. Second operand 5 states. [2020-10-14 04:03:14,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:03:14,828 INFO L93 Difference]: Finished difference Result 12763 states and 17036 transitions. [2020-10-14 04:03:14,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:03:14,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-14 04:03:14,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:03:14,873 INFO L225 Difference]: With dead ends: 12763 [2020-10-14 04:03:14,874 INFO L226 Difference]: Without dead ends: 7280 [2020-10-14 04:03:14,888 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 04:03:14,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7280 states. [2020-10-14 04:03:15,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7280 to 7256. [2020-10-14 04:03:15,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7256 states. [2020-10-14 04:03:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7256 states to 7256 states and 9400 transitions. [2020-10-14 04:03:15,071 INFO L78 Accepts]: Start accepts. Automaton has 7256 states and 9400 transitions. Word has length 133 [2020-10-14 04:03:15,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:03:15,072 INFO L479 AbstractCegarLoop]: Abstraction has 7256 states and 9400 transitions. [2020-10-14 04:03:15,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:03:15,072 INFO L276 IsEmpty]: Start isEmpty. Operand 7256 states and 9400 transitions. [2020-10-14 04:03:15,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 04:03:15,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:03:15,077 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:03:15,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:03:15,077 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:03:15,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:03:15,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1322840592, now seen corresponding path program 1 times [2020-10-14 04:03:15,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:03:15,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340188808] [2020-10-14 04:03:15,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:03:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:15,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:15,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:16,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:16,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 04:03:16,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:03:16,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-10-14 04:03:16,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:16,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:16,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:03:16,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 04:03:16,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 04:03:16,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:03:16,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:03:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:16,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:16,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:16,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:03:16,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:16,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:03:16,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:16,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:16,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:03:16,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:16,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:03:16,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:16,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:03:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:16,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:16,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:16,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 04:03:16,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:16,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 04:03:16,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:16,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:03:16,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 04:03:16,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:03:16,504 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:03:16,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340188808] [2020-10-14 04:03:16,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:03:16,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:03:16,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285406932] [2020-10-14 04:03:16,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:03:16,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:03:16,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:03:16,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:03:16,512 INFO L87 Difference]: Start difference. First operand 7256 states and 9400 transitions. Second operand 5 states. [2020-10-14 04:03:34,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:03:34,699 INFO L93 Difference]: Finished difference Result 17614 states and 23549 transitions. [2020-10-14 04:03:34,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:03:34,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-14 04:03:34,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:03:34,750 INFO L225 Difference]: With dead ends: 17614 [2020-10-14 04:03:34,751 INFO L226 Difference]: Without dead ends: 10364 [2020-10-14 04:03:34,771 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 04:03:34,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10364 states. [2020-10-14 04:03:35,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10364 to 10353. [2020-10-14 04:03:35,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10353 states. [2020-10-14 04:03:35,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10353 states to 10353 states and 12950 transitions. [2020-10-14 04:03:35,022 INFO L78 Accepts]: Start accepts. Automaton has 10353 states and 12950 transitions. Word has length 151 [2020-10-14 04:03:35,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:03:35,023 INFO L479 AbstractCegarLoop]: Abstraction has 10353 states and 12950 transitions. [2020-10-14 04:03:35,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:03:35,024 INFO L276 IsEmpty]: Start isEmpty. Operand 10353 states and 12950 transitions. [2020-10-14 04:03:35,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-14 04:03:35,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:03:35,032 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:03:35,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:03:35,032 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:03:35,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:03:35,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1775804175, now seen corresponding path program 1 times [2020-10-14 04:03:35,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:03:35,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264722210] [2020-10-14 04:03:35,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:03:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:35,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:35,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:37,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:39,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:40,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:40,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-14 04:03:40,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:03:40,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 04:03:40,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:40,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:40,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:03:40,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:03:40,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 04:03:40,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:03:40,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:03:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:40,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:40,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:40,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:03:40,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:40,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:03:40,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:40,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:40,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:03:40,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:40,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:03:40,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:40,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:03:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:40,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:40,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:40,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:03:40,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:40,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 04:03:40,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:40,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:40,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:03:40,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:40,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:03:40,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:03:40,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 04:03:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:40,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:40,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:40,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:03:40,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:40,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 04:03:40,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:40,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:40,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:03:40,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:03:40,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:03:40,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:40,603 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:03:40,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264722210] [2020-10-14 04:03:40,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:03:40,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:03:40,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058162588] [2020-10-14 04:03:40,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:03:40,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:03:40,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:03:40,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:03:40,606 INFO L87 Difference]: Start difference. First operand 10353 states and 12950 transitions. Second operand 7 states. [2020-10-14 04:03:56,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:03:56,484 INFO L93 Difference]: Finished difference Result 27920 states and 36062 transitions. [2020-10-14 04:03:56,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:03:56,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-10-14 04:03:56,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:03:56,544 INFO L225 Difference]: With dead ends: 27920 [2020-10-14 04:03:56,545 INFO L226 Difference]: Without dead ends: 14446 [2020-10-14 04:03:56,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:03:56,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14446 states. [2020-10-14 04:03:56,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14446 to 12250. [2020-10-14 04:03:56,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12250 states. [2020-10-14 04:03:56,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12250 states to 12250 states and 14612 transitions. [2020-10-14 04:03:56,947 INFO L78 Accepts]: Start accepts. Automaton has 12250 states and 14612 transitions. Word has length 198 [2020-10-14 04:03:56,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:03:56,947 INFO L479 AbstractCegarLoop]: Abstraction has 12250 states and 14612 transitions. [2020-10-14 04:03:56,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:03:56,948 INFO L276 IsEmpty]: Start isEmpty. Operand 12250 states and 14612 transitions. [2020-10-14 04:03:56,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-14 04:03:56,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:03:56,952 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 04:03:56,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:03:56,953 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:03:56,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:03:56,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1780874723, now seen corresponding path program 1 times [2020-10-14 04:03:56,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:03:56,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60188645] [2020-10-14 04:03:56,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:03:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:57,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:57,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:57,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:57,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-14 04:03:57,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:03:57,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-10-14 04:03:57,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:57,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:57,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:03:57,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:03:57,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 04:03:57,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:03:57,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:03:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:57,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:57,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:57,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:03:57,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:57,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:03:57,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:57,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:57,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:03:57,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:57,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:03:57,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:57,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:03:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:57,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:58,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:58,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:03:58,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:58,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 04:03:58,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:58,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:58,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:03:58,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:58,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:03:58,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:58,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:03:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:58,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:58,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:58,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:03:58,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:58,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 04:03:58,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:58,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:58,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:03:58,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:03:58,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:03:58,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:03:58,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60188645] [2020-10-14 04:03:58,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:03:58,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:03:58,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670238895] [2020-10-14 04:03:58,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:03:58,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:03:58,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:03:58,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:03:58,335 INFO L87 Difference]: Start difference. First operand 12250 states and 14612 transitions. Second operand 7 states. [2020-10-14 04:04:16,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:04:16,176 INFO L93 Difference]: Finished difference Result 28412 states and 34657 transitions. [2020-10-14 04:04:16,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:04:16,181 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2020-10-14 04:04:16,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:04:16,243 INFO L225 Difference]: With dead ends: 28412 [2020-10-14 04:04:16,244 INFO L226 Difference]: Without dead ends: 16168 [2020-10-14 04:04:16,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:04:16,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16168 states. [2020-10-14 04:04:16,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16168 to 16162. [2020-10-14 04:04:16,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16162 states. [2020-10-14 04:04:16,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16162 states to 16162 states and 18995 transitions. [2020-10-14 04:04:16,582 INFO L78 Accepts]: Start accepts. Automaton has 16162 states and 18995 transitions. Word has length 211 [2020-10-14 04:04:16,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:04:16,583 INFO L479 AbstractCegarLoop]: Abstraction has 16162 states and 18995 transitions. [2020-10-14 04:04:16,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:04:16,583 INFO L276 IsEmpty]: Start isEmpty. Operand 16162 states and 18995 transitions. [2020-10-14 04:04:16,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-14 04:04:16,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:04:16,586 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 04:04:16,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:04:16,587 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:04:16,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:04:16,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1345197393, now seen corresponding path program 1 times [2020-10-14 04:04:16,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:04:16,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487348876] [2020-10-14 04:04:16,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:04:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:16,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:16,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:17,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:17,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:21,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:21,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-14 04:04:21,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:04:21,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 04:04:21,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:21,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:21,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:04:21,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-14 04:04:21,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 04:04:21,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:21,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:04:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:21,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:21,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:21,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:04:21,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:21,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:04:21,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:21,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:04:21,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:21,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:04:21,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:21,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:04:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:21,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:21,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:21,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:04:21,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:21,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 04:04:21,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:21,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:04:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:04:21,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:04:21,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:04:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:21,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:22,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:22,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:04:22,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:22,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 04:04:22,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:22,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:22,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:04:22,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:22,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:04:22,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:22,087 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 04:04:22,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487348876] [2020-10-14 04:04:22,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:04:22,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:04:22,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102337199] [2020-10-14 04:04:22,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:04:22,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:04:22,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:04:22,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:04:22,090 INFO L87 Difference]: Start difference. First operand 16162 states and 18995 transitions. Second operand 5 states. [2020-10-14 04:04:36,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:04:36,487 INFO L93 Difference]: Finished difference Result 38034 states and 45660 transitions. [2020-10-14 04:04:36,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:04:36,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-14 04:04:36,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:04:36,569 INFO L225 Difference]: With dead ends: 38034 [2020-10-14 04:04:36,570 INFO L226 Difference]: Without dead ends: 21878 [2020-10-14 04:04:36,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:04:36,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21878 states. [2020-10-14 04:04:36,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21878 to 19267. [2020-10-14 04:04:36,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19267 states. [2020-10-14 04:04:37,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19267 states to 19267 states and 22725 transitions. [2020-10-14 04:04:37,008 INFO L78 Accepts]: Start accepts. Automaton has 19267 states and 22725 transitions. Word has length 216 [2020-10-14 04:04:37,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:04:37,009 INFO L479 AbstractCegarLoop]: Abstraction has 19267 states and 22725 transitions. [2020-10-14 04:04:37,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:04:37,009 INFO L276 IsEmpty]: Start isEmpty. Operand 19267 states and 22725 transitions. [2020-10-14 04:04:37,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-14 04:04:37,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:04:37,013 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:04:37,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:04:37,014 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:04:37,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:04:37,014 INFO L82 PathProgramCache]: Analyzing trace with hash -747686888, now seen corresponding path program 1 times [2020-10-14 04:04:37,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:04:37,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055404351] [2020-10-14 04:04:37,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:04:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:37,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:37,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:37,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:38,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:39,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:39,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-14 04:04:39,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:04:39,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2857 [2020-10-14 04:04:39,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:39,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:39,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:04:39,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:04:39,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:04:39,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:40,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:04:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:40,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:40,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:40,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:04:40,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:40,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:04:40,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:40,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:04:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:04:40,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:04:40,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:04:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:40,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:40,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:40,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:04:40,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:40,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 04:04:40,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:40,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:40,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:04:40,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:40,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:04:40,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:40,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:04:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:40,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:40,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:40,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:04:40,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:40,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-14 04:04:40,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:40,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:40,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:04:40,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:04:40,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:04:40,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:04:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:04:40,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055404351] [2020-10-14 04:04:40,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:04:40,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:04:40,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941243310] [2020-10-14 04:04:40,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:04:40,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:04:40,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:04:40,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:04:40,715 INFO L87 Difference]: Start difference. First operand 19267 states and 22725 transitions. Second operand 7 states. [2020-10-14 04:04:58,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:04:58,502 INFO L93 Difference]: Finished difference Result 48092 states and 58429 transitions. [2020-10-14 04:04:58,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:04:58,506 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-10-14 04:04:58,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:04:58,591 INFO L225 Difference]: With dead ends: 48092 [2020-10-14 04:04:58,591 INFO L226 Difference]: Without dead ends: 28376 [2020-10-14 04:04:58,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:04:58,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28376 states. [2020-10-14 04:04:59,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28376 to 27917. [2020-10-14 04:04:59,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27917 states. [2020-10-14 04:04:59,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27917 states to 27917 states and 33069 transitions. [2020-10-14 04:04:59,126 INFO L78 Accepts]: Start accepts. Automaton has 27917 states and 33069 transitions. Word has length 229 [2020-10-14 04:04:59,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:04:59,127 INFO L479 AbstractCegarLoop]: Abstraction has 27917 states and 33069 transitions. [2020-10-14 04:04:59,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:04:59,127 INFO L276 IsEmpty]: Start isEmpty. Operand 27917 states and 33069 transitions. [2020-10-14 04:04:59,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-14 04:04:59,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:04:59,134 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 04:04:59,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:04:59,134 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:04:59,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:04:59,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1957825368, now seen corresponding path program 1 times [2020-10-14 04:04:59,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:04:59,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412349529] [2020-10-14 04:04:59,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:04:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:59,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:59,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:00,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:00,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:03,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:04,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:04,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-14 04:05:04,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:05:04,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 04:05:04,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:04,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:04,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:05:04,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-14 04:05:04,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 04:05:04,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:04,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:05:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:04,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:04,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:04,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:05:04,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:04,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:05:04,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:04,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:05:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:05:04,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:04,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:05:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:04,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:04,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:04,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:05:04,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:04,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 04:05:04,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:04,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:05:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:05:04,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:04,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:05:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:04,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:04,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:04,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:05:04,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:04,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 04:05:04,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:04,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:05:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:05:04,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:04,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-14 04:05:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:04,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:04,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:04,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:05:04,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:04,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 04:05:04,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:04,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:04,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:05:04,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:05:04,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 04:05:04,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:05,016 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 288 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-14 04:05:05,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412349529] [2020-10-14 04:05:05,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:05:05,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:05:05,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837532510] [2020-10-14 04:05:05,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:05:05,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:05:05,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:05:05,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:05:05,020 INFO L87 Difference]: Start difference. First operand 27917 states and 33069 transitions. Second operand 7 states. [2020-10-14 04:05:28,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:05:28,174 INFO L93 Difference]: Finished difference Result 66509 states and 80324 transitions. [2020-10-14 04:05:28,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:05:28,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2020-10-14 04:05:28,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:05:28,266 INFO L225 Difference]: With dead ends: 66509 [2020-10-14 04:05:28,266 INFO L226 Difference]: Without dead ends: 37676 [2020-10-14 04:05:28,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:05:28,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37676 states. [2020-10-14 04:05:28,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37676 to 35034. [2020-10-14 04:05:28,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35034 states. [2020-10-14 04:05:28,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35034 states to 35034 states and 42632 transitions. [2020-10-14 04:05:28,973 INFO L78 Accepts]: Start accepts. Automaton has 35034 states and 42632 transitions. Word has length 290 [2020-10-14 04:05:28,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:05:28,973 INFO L479 AbstractCegarLoop]: Abstraction has 35034 states and 42632 transitions. [2020-10-14 04:05:28,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:05:28,973 INFO L276 IsEmpty]: Start isEmpty. Operand 35034 states and 42632 transitions. [2020-10-14 04:05:28,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-14 04:05:28,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:05:28,981 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:05:28,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:05:28,981 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:05:28,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:05:28,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1840498091, now seen corresponding path program 1 times [2020-10-14 04:05:28,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:05:28,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009326515] [2020-10-14 04:05:28,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:05:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:29,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:29,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:30,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:30,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:32,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:32,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:32,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-14 04:05:32,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:05:32,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3599 [2020-10-14 04:05:32,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:32,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:32,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:05:32,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 04:05:32,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 04:05:32,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:32,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:05:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:32,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:32,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:32,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:05:32,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:32,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:05:32,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:32,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:32,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:05:32,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:32,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:05:32,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:32,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:05:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:32,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:32,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:32,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:05:32,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:32,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 04:05:32,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:32,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:05:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:05:32,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:32,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:05:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:33,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:33,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:33,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:05:33,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:33,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 04:05:33,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:33,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:33,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:05:33,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:33,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 04:05:33,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:33,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 04:05:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:33,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:33,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:33,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 04:05:33,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:33,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 04:05:33,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:33,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:33,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:05:33,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:05:33,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:05:33,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:05:33,408 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 294 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 04:05:33,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009326515] [2020-10-14 04:05:33,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:05:33,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:05:33,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702529745] [2020-10-14 04:05:33,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:05:33,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:05:33,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:05:33,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:05:33,411 INFO L87 Difference]: Start difference. First operand 35034 states and 42632 transitions. Second operand 7 states. [2020-10-14 04:05:54,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:05:54,221 INFO L93 Difference]: Finished difference Result 70551 states and 85922 transitions. [2020-10-14 04:05:54,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:05:54,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2020-10-14 04:05:54,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:05:54,314 INFO L225 Difference]: With dead ends: 70551 [2020-10-14 04:05:54,314 INFO L226 Difference]: Without dead ends: 35523 [2020-10-14 04:05:54,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:05:54,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35523 states. [2020-10-14 04:05:55,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35523 to 35069. [2020-10-14 04:05:55,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35069 states. [2020-10-14 04:05:55,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35069 states to 35069 states and 42682 transitions. [2020-10-14 04:05:55,112 INFO L78 Accepts]: Start accepts. Automaton has 35069 states and 42682 transitions. Word has length 304 [2020-10-14 04:05:55,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:05:55,113 INFO L479 AbstractCegarLoop]: Abstraction has 35069 states and 42682 transitions. [2020-10-14 04:05:55,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:05:55,114 INFO L276 IsEmpty]: Start isEmpty. Operand 35069 states and 42682 transitions. [2020-10-14 04:05:55,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-14 04:05:55,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:05:55,122 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:05:55,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:05:55,122 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:05:55,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:05:55,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1936696454, now seen corresponding path program 1 times [2020-10-14 04:05:55,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:05:55,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876570196] [2020-10-14 04:05:55,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:05:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:55,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking...