/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:00:50,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:00:50,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:00:50,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:00:50,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:00:50,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:00:50,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:00:50,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:00:50,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:00:50,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:00:50,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:00:50,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:00:50,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:00:50,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:00:50,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:00:50,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:00:50,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:00:50,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:00:50,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:00:50,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:00:50,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:00:50,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:00:50,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:00:50,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:00:50,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:00:50,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:00:50,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:00:50,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:00:50,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:00:50,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:00:50,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:00:50,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:00:50,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:00:50,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:00:50,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:00:50,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:00:50,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:00:50,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:00:50,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:00:50,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:00:50,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:00:50,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 22:00:50,613 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:00:50,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:00:50,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:00:50,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:00:50,615 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:00:50,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:00:50,616 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:00:50,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:00:50,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:00:50,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:00:50,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:00:50,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:00:50,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:00:50,617 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:00:50,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:00:50,618 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:00:50,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:00:50,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:00:50,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:00:50,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:00:50,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:00:50,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:00:50,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:00:50,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:00:50,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:00:50,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:00:50,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:00:50,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:00:50,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:00:50,620 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:00:50,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:00:50,971 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:00:50,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:00:50,979 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:00:50,979 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:00:50,980 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label36.c [2020-10-14 22:00:51,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77a650fed/49ccbe20e19244b9a395f153bdc49e79/FLAGc2bfdec01 [2020-10-14 22:00:51,753 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:00:51,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label36.c [2020-10-14 22:00:51,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77a650fed/49ccbe20e19244b9a395f153bdc49e79/FLAGc2bfdec01 [2020-10-14 22:00:51,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77a650fed/49ccbe20e19244b9a395f153bdc49e79 [2020-10-14 22:00:51,942 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:00:51,944 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:00:51,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:00:51,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:00:51,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:00:51,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:00:51" (1/1) ... [2020-10-14 22:00:51,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eecf127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:51, skipping insertion in model container [2020-10-14 22:00:51,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:00:51" (1/1) ... [2020-10-14 22:00:51,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:00:52,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:00:53,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:00:53,035 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:00:53,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:00:53,374 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:00:53,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:53 WrapperNode [2020-10-14 22:00:53,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:00:53,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:00:53,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:00:53,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:00:53,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:53" (1/1) ... [2020-10-14 22:00:53,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:53" (1/1) ... [2020-10-14 22:00:53,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:53" (1/1) ... [2020-10-14 22:00:53,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:53" (1/1) ... [2020-10-14 22:00:53,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:53" (1/1) ... [2020-10-14 22:00:53,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:53" (1/1) ... [2020-10-14 22:00:53,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:53" (1/1) ... [2020-10-14 22:00:53,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:00:53,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:00:53,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:00:53,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:00:53,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:00:53,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:00:53,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:00:53,696 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:00:53,697 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:00:53,697 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:00:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:00:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:00:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:00:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:00:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:00:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:00:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:00:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:00:59,776 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:00:59,778 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:00:59,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:00:59 BoogieIcfgContainer [2020-10-14 22:00:59,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:00:59,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:00:59,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:00:59,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:00:59,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:00:51" (1/3) ... [2020-10-14 22:00:59,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed06995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:00:59, skipping insertion in model container [2020-10-14 22:00:59,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:53" (2/3) ... [2020-10-14 22:00:59,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed06995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:00:59, skipping insertion in model container [2020-10-14 22:00:59,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:00:59" (3/3) ... [2020-10-14 22:00:59,803 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label36.c [2020-10-14 22:00:59,815 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:00:59,824 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:00:59,840 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:00:59,872 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:00:59,872 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:00:59,872 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:00:59,872 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:00:59,872 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:00:59,873 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:00:59,873 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:00:59,873 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:00:59,902 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 22:00:59,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 22:00:59,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:00:59,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:00:59,915 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:00:59,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:00:59,922 INFO L82 PathProgramCache]: Analyzing trace with hash 414011765, now seen corresponding path program 1 times [2020-10-14 22:00:59,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:00:59,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869410211] [2020-10-14 22:00:59,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:01:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:00,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:00,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:00,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:01:00,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:00,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-10-14 22:01:00,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:00,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:00,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:01:00,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:01:00,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 22:01:00,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:01:00,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:01:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:00,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:00,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:00,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:01:00,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:00,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:01:00,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:00,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:00,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:01:00,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:01:00,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:01:00,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:01:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:01:00,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869410211] [2020-10-14 22:01:00,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:01:00,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:01:00,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854884740] [2020-10-14 22:01:00,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:01:00,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:01:00,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:01:00,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:01:00,901 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 22:01:07,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:01:07,244 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-14 22:01:07,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:01:07,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-14 22:01:07,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:01:07,274 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 22:01:07,274 INFO L226 Difference]: Without dead ends: 697 [2020-10-14 22:01:07,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:01:07,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-14 22:01:07,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-14 22:01:07,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-14 22:01:07,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-14 22:01:07,396 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 67 [2020-10-14 22:01:07,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:01:07,397 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-14 22:01:07,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:01:07,397 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-14 22:01:07,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 22:01:07,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:01:07,405 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:01:07,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:01:07,405 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:01:07,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:01:07,406 INFO L82 PathProgramCache]: Analyzing trace with hash -89553710, now seen corresponding path program 1 times [2020-10-14 22:01:07,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:01:07,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821420894] [2020-10-14 22:01:07,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:01:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:07,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:07,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:09,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:10,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:10,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 22:01:10,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:01:10,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3039 [2020-10-14 22:01:10,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:10,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:10,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:01:10,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 22:01:10,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 22:01:10,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:01:10,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:01:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:10,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:10,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:10,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:01:10,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:10,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:01:10,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:10,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:10,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:01:10,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:01:10,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:01:10,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:01:10,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:01:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:10,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:10,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:10,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:01:10,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:10,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 22:01:10,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:10,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:10,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:01:10,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:01:10,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 22:01:10,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:01:10,916 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:01:10,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821420894] [2020-10-14 22:01:10,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:01:10,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:01:10,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44952] [2020-10-14 22:01:10,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:01:10,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:01:10,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:01:10,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:01:10,922 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 6 states. [2020-10-14 22:01:24,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:01:24,525 INFO L93 Difference]: Finished difference Result 2639 states and 3908 transitions. [2020-10-14 22:01:24,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:01:24,532 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-10-14 22:01:24,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:01:24,543 INFO L225 Difference]: With dead ends: 2639 [2020-10-14 22:01:24,544 INFO L226 Difference]: Without dead ends: 1954 [2020-10-14 22:01:24,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:01:24,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-14 22:01:24,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1948. [2020-10-14 22:01:24,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1948 states. [2020-10-14 22:01:24,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2589 transitions. [2020-10-14 22:01:24,619 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2589 transitions. Word has length 136 [2020-10-14 22:01:24,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:01:24,620 INFO L479 AbstractCegarLoop]: Abstraction has 1948 states and 2589 transitions. [2020-10-14 22:01:24,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:01:24,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2589 transitions. [2020-10-14 22:01:24,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-14 22:01:24,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:01:24,631 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:01:24,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:01:24,631 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:01:24,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:01:24,632 INFO L82 PathProgramCache]: Analyzing trace with hash -163717938, now seen corresponding path program 1 times [2020-10-14 22:01:24,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:01:24,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047977169] [2020-10-14 22:01:24,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:01:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:24,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:25,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:25,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:25,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:28,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:28,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:29,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:29,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-14 22:01:29,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:01:29,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4299 [2020-10-14 22:01:29,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:29,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:29,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 22:01:29,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:01:29,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-10-14 22:01:29,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:01:29,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:01:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:29,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:29,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:29,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:01:29,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:29,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 22:01:29,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:29,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:29,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:01:29,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:01:29,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:01:29,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:01:29,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:01:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:29,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:29,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:29,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:01:29,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:29,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 22:01:29,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:29,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:29,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:01:29,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:01:29,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 22:01:29,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:01:29,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:01:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:29,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:29,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:29,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:29,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:29,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 22:01:29,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:01:29,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-14 22:01:29,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:29,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:29,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:01:29,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:01:29,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:01:29,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:01:30,033 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 56 proven. 139 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 22:01:30,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047977169] [2020-10-14 22:01:30,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:01:30,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:01:30,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880465410] [2020-10-14 22:01:30,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:01:30,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:01:30,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:01:30,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:01:30,039 INFO L87 Difference]: Start difference. First operand 1948 states and 2589 transitions. Second operand 8 states. [2020-10-14 22:01:46,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:01:46,076 INFO L93 Difference]: Finished difference Result 7007 states and 9633 transitions. [2020-10-14 22:01:46,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 22:01:46,077 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 241 [2020-10-14 22:01:46,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:01:46,111 INFO L225 Difference]: With dead ends: 7007 [2020-10-14 22:01:46,112 INFO L226 Difference]: Without dead ends: 5065 [2020-10-14 22:01:46,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-14 22:01:46,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5065 states. [2020-10-14 22:01:46,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5065 to 4447. [2020-10-14 22:01:46,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4447 states. [2020-10-14 22:01:46,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4447 states to 4447 states and 5838 transitions. [2020-10-14 22:01:46,339 INFO L78 Accepts]: Start accepts. Automaton has 4447 states and 5838 transitions. Word has length 241 [2020-10-14 22:01:46,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:01:46,341 INFO L479 AbstractCegarLoop]: Abstraction has 4447 states and 5838 transitions. [2020-10-14 22:01:46,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:01:46,342 INFO L276 IsEmpty]: Start isEmpty. Operand 4447 states and 5838 transitions. [2020-10-14 22:01:46,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-10-14 22:01:46,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:01:46,363 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:01:46,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:01:46,364 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:01:46,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:01:46,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1692341449, now seen corresponding path program 1 times [2020-10-14 22:01:46,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:01:46,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558615986] [2020-10-14 22:01:46,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:01:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:46,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:46,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:46,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:47,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:49,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:51,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:51,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 481 [2020-10-14 22:01:51,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:01:51,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 22:01:51,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:51,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:01:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:01:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 22:01:51,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:01:51,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:01:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:51,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:51,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:51,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:01:51,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:51,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:01:51,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:51,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:51,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:01:51,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:01:51,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:01:51,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:01:51,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:01:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:51,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:52,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:52,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:01:52,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:52,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-14 22:01:52,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:52,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:01:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:01:52,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:01:52,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:01:52,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 22:01:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:52,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:52,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:52,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 22:01:52,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:52,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 22:01:52,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:52,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:52,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:01:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 22:01:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:01:52,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:01:52,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-14 22:01:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:52,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:52,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:52,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 22:01:52,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:52,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-14 22:01:52,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:52,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:52,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:01:52,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-14 22:01:52,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:01:52,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:01:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 180 proven. 188 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-14 22:01:53,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558615986] [2020-10-14 22:01:53,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:01:53,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:01:53,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687717625] [2020-10-14 22:01:53,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:01:53,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:01:53,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:01:53,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:01:53,587 INFO L87 Difference]: Start difference. First operand 4447 states and 5838 transitions. Second operand 7 states. [2020-10-14 22:02:00,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:02:00,933 INFO L93 Difference]: Finished difference Result 8614 states and 11454 transitions. [2020-10-14 22:02:00,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:02:00,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 467 [2020-10-14 22:02:00,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:02:00,969 INFO L225 Difference]: With dead ends: 8614 [2020-10-14 22:02:00,970 INFO L226 Difference]: Without dead ends: 4480 [2020-10-14 22:02:00,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:02:00,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4480 states. [2020-10-14 22:02:01,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4480 to 4472. [2020-10-14 22:02:01,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4472 states. [2020-10-14 22:02:01,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 5911 transitions. [2020-10-14 22:02:01,138 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 5911 transitions. Word has length 467 [2020-10-14 22:02:01,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:02:01,140 INFO L479 AbstractCegarLoop]: Abstraction has 4472 states and 5911 transitions. [2020-10-14 22:02:01,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:02:01,140 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 5911 transitions. [2020-10-14 22:02:01,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2020-10-14 22:02:01,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:02:01,164 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:02:01,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:02:01,164 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:02:01,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:02:01,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1013939015, now seen corresponding path program 1 times [2020-10-14 22:02:01,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:02:01,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030171808] [2020-10-14 22:02:01,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:02:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:01,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:01,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:01,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:03,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:04,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:05,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:06,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:06,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 504 [2020-10-14 22:02:06,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:02:06,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 22:02:06,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:06,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:06,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 22:02:06,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:02:06,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 431 [2020-10-14 22:02:06,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:06,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:02:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:06,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:06,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:06,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:02:06,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:06,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:02:06,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:06,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:06,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:02:06,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:06,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:02:06,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:06,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:02:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:06,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:06,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:06,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:02:06,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:06,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 22:02:06,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:06,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:06,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:06,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:02:06,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 22:02:06,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:02:06,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:02:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:06,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:07,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:07,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:02:07,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:07,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-10-14 22:02:07,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:07,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:02:07,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:02:07,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:02:07,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-14 22:02:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:07,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:08,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:08,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:08,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:08,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 22:02:08,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:02:08,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-10-14 22:02:08,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:08,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:08,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:08,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:02:08,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 22:02:08,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:09,210 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 182 proven. 301 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 22:02:09,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030171808] [2020-10-14 22:02:09,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:02:09,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:02:09,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077153808] [2020-10-14 22:02:09,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:02:09,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:02:09,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:02:09,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:02:09,213 INFO L87 Difference]: Start difference. First operand 4472 states and 5911 transitions. Second operand 9 states. [2020-10-14 22:02:18,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:02:18,564 INFO L93 Difference]: Finished difference Result 10569 states and 14145 transitions. [2020-10-14 22:02:18,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:02:18,572 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 490 [2020-10-14 22:02:18,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:02:18,613 INFO L225 Difference]: With dead ends: 10569 [2020-10-14 22:02:18,613 INFO L226 Difference]: Without dead ends: 6719 [2020-10-14 22:02:18,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:02:18,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6719 states. [2020-10-14 22:02:18,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6719 to 6074. [2020-10-14 22:02:18,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6074 states. [2020-10-14 22:02:18,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6074 states to 6074 states and 7830 transitions. [2020-10-14 22:02:18,868 INFO L78 Accepts]: Start accepts. Automaton has 6074 states and 7830 transitions. Word has length 490 [2020-10-14 22:02:18,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:02:18,870 INFO L479 AbstractCegarLoop]: Abstraction has 6074 states and 7830 transitions. [2020-10-14 22:02:18,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:02:18,871 INFO L276 IsEmpty]: Start isEmpty. Operand 6074 states and 7830 transitions. [2020-10-14 22:02:18,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2020-10-14 22:02:18,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:02:18,894 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:02:18,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:02:18,894 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:02:18,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:02:18,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1406956064, now seen corresponding path program 1 times [2020-10-14 22:02:18,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:02:18,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654506833] [2020-10-14 22:02:18,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:02:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:19,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:19,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:19,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:20,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:24,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:24,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 555 [2020-10-14 22:02:24,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:02:24,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5171 [2020-10-14 22:02:24,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:24,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:24,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:02:24,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-14 22:02:24,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-14 22:02:24,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:24,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:02:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:24,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:24,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:24,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:02:24,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:24,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:02:24,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:24,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:02:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:02:24,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:24,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:02:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:24,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:24,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:24,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:02:24,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:24,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 22:02:24,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:24,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:24,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:02:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:02:24,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:24,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:02:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:24,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:24,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:24,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 22:02:24,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:24,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 22:02:24,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:24,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:24,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:02:24,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:24,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:02:24,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:24,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-14 22:02:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:24,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:24,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:24,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 22:02:24,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:24,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 22:02:24,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:24,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:24,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:24,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:02:24,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 22:02:24,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:02:25,363 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 314 proven. 61 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-14 22:02:25,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654506833] [2020-10-14 22:02:25,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:02:25,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:02:25,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200393613] [2020-10-14 22:02:25,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:02:25,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:02:25,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:02:25,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:02:25,367 INFO L87 Difference]: Start difference. First operand 6074 states and 7830 transitions. Second operand 6 states. [2020-10-14 22:02:38,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:02:38,368 INFO L93 Difference]: Finished difference Result 12849 states and 17592 transitions. [2020-10-14 22:02:38,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:02:38,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 541 [2020-10-14 22:02:38,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:02:38,424 INFO L225 Difference]: With dead ends: 12849 [2020-10-14 22:02:38,425 INFO L226 Difference]: Without dead ends: 8957 [2020-10-14 22:02:38,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:02:38,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8957 states. [2020-10-14 22:02:38,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8957 to 8951. [2020-10-14 22:02:38,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8951 states. [2020-10-14 22:02:38,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8951 states to 8951 states and 11790 transitions. [2020-10-14 22:02:38,716 INFO L78 Accepts]: Start accepts. Automaton has 8951 states and 11790 transitions. Word has length 541 [2020-10-14 22:02:38,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:02:38,718 INFO L479 AbstractCegarLoop]: Abstraction has 8951 states and 11790 transitions. [2020-10-14 22:02:38,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:02:38,718 INFO L276 IsEmpty]: Start isEmpty. Operand 8951 states and 11790 transitions. [2020-10-14 22:02:38,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2020-10-14 22:02:38,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:02:38,740 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:02:38,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:02:38,741 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:02:38,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:02:38,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1180103298, now seen corresponding path program 1 times [2020-10-14 22:02:38,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:02:38,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574136361] [2020-10-14 22:02:38,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:02:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:39,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:39,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:41,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:41,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:43,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:43,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 574 [2020-10-14 22:02:43,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:02:43,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 22:02:43,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:43,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:43,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:43,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 22:02:43,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 22:02:43,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:02:44,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:02:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:44,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:44,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:44,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:02:44,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:44,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:02:44,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:44,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:02:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:02:44,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:02:44,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:02:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:44,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:44,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:44,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:02:44,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:44,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 22:02:44,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:44,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:44,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:02:44,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:44,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 22:02:44,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:02:44,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:02:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:44,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:44,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:44,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 22:02:44,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:44,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 22:02:44,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:44,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:02:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 22:02:44,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:02:44,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-10-14 22:02:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:44,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:44,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:44,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 22:02:44,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:44,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 22:02:44,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:44,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:44,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:02:44,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-14 22:02:44,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:02:44,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:02:44,905 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 280 proven. 98 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-14 22:02:44,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574136361] [2020-10-14 22:02:44,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:02:44,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:02:44,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320284713] [2020-10-14 22:02:44,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:02:44,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:02:44,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:02:44,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:02:44,909 INFO L87 Difference]: Start difference. First operand 8951 states and 11790 transitions. Second operand 7 states. [2020-10-14 22:02:57,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:02:57,282 INFO L93 Difference]: Finished difference Result 20199 states and 27534 transitions. [2020-10-14 22:02:57,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:02:57,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 560 [2020-10-14 22:02:57,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:02:57,353 INFO L225 Difference]: With dead ends: 20199 [2020-10-14 22:02:57,353 INFO L226 Difference]: Without dead ends: 11870 [2020-10-14 22:02:57,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:02:57,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11870 states. [2020-10-14 22:02:57,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11870 to 11836. [2020-10-14 22:02:57,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11836 states. [2020-10-14 22:02:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11836 states to 11836 states and 15429 transitions. [2020-10-14 22:02:57,723 INFO L78 Accepts]: Start accepts. Automaton has 11836 states and 15429 transitions. Word has length 560 [2020-10-14 22:02:57,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:02:57,724 INFO L479 AbstractCegarLoop]: Abstraction has 11836 states and 15429 transitions. [2020-10-14 22:02:57,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:02:57,725 INFO L276 IsEmpty]: Start isEmpty. Operand 11836 states and 15429 transitions. [2020-10-14 22:02:57,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2020-10-14 22:02:57,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:02:57,760 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:02:57,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:02:57,761 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:02:57,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:02:57,761 INFO L82 PathProgramCache]: Analyzing trace with hash -658343867, now seen corresponding path program 1 times [2020-10-14 22:02:57,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:02:57,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967313824] [2020-10-14 22:02:57,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:02:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:57,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:58,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:58,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:58,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:01,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:01,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:02,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:02,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 648 [2020-10-14 22:03:02,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:03:02,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 22:03:02,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:02,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:03:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 22:03:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-14 22:03:02,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:03,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:03,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:03,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:03,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:03,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:03,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:03:03,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:03,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:03,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:03,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:03,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:03,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:03,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:03:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:03,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:03,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:03,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:03:03,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:03,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 22:03:03,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:03,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 22:03:03,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:03,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:03:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:03,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:03,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:03,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:03,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:03:03,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:03:03,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-10-14 22:03:03,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:03,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:03,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:03,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:03,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:03:03,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:03,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-14 22:03:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:03,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:03,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:03,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 22:03:03,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:03,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 22:03:03,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:03,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:03,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:03,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:03,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:03:03,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:03,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-14 22:03:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:03,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:03,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:03,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 22:03:03,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:03,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 22:03:03,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:03,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:03,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:03,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 22:03:03,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:03,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:03,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-10-14 22:03:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:03,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:03,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:03,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 22:03:03,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:03,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 22:03:03,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:03,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 22:03:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:03,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1164 backedges. 558 proven. 336 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-10-14 22:03:04,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967313824] [2020-10-14 22:03:04,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:03:04,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:03:04,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015228136] [2020-10-14 22:03:04,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:03:04,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:04,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:03:04,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:03:04,220 INFO L87 Difference]: Start difference. First operand 11836 states and 15429 transitions. Second operand 8 states. [2020-10-14 22:03:18,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:18,165 INFO L93 Difference]: Finished difference Result 23827 states and 32078 transitions. [2020-10-14 22:03:18,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:03:18,167 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 630 [2020-10-14 22:03:18,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:18,221 INFO L225 Difference]: With dead ends: 23827 [2020-10-14 22:03:18,221 INFO L226 Difference]: Without dead ends: 12611 [2020-10-14 22:03:18,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-14 22:03:18,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12611 states. [2020-10-14 22:03:18,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12611 to 12533. [2020-10-14 22:03:18,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12533 states. [2020-10-14 22:03:18,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12533 states to 12533 states and 15558 transitions. [2020-10-14 22:03:18,724 INFO L78 Accepts]: Start accepts. Automaton has 12533 states and 15558 transitions. Word has length 630 [2020-10-14 22:03:18,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:18,724 INFO L479 AbstractCegarLoop]: Abstraction has 12533 states and 15558 transitions. [2020-10-14 22:03:18,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:03:18,725 INFO L276 IsEmpty]: Start isEmpty. Operand 12533 states and 15558 transitions. [2020-10-14 22:03:18,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2020-10-14 22:03:18,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:18,749 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:03:18,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:03:18,750 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:18,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:18,751 INFO L82 PathProgramCache]: Analyzing trace with hash 837150374, now seen corresponding path program 1 times [2020-10-14 22:03:18,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:18,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038724709] [2020-10-14 22:03:18,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:19,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:19,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:19,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:20,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:21,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:23,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:23,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 664 [2020-10-14 22:03:23,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:03:23,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 22:03:23,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:23,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 475 [2020-10-14 22:03:23,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 22:03:23,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:24,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:24,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:24,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:24,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:24,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:24,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:03:24,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:24,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:24,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:24,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:03:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:24,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:24,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:24,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:03:24,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:24,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 22:03:24,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:24,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:24,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:24,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:24,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:24,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:24,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:03:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:24,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:24,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:24,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:03:24,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:24,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:03:24,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:24,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:24,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:24,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 22:03:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:24,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:24,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:24,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 22:03:24,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:24,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 22:03:24,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:24,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:24,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:24,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:24,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 22:03:24,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:24,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-10-14 22:03:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:24,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:24,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:24,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:24,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 22:03:24,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:03:24,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 22:03:24,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:24,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:24,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:24,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:24,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 22:03:24,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 546 proven. 2 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-10-14 22:03:24,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038724709] [2020-10-14 22:03:24,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:03:24,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:03:24,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424321465] [2020-10-14 22:03:24,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:03:24,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:24,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:03:24,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:03:24,846 INFO L87 Difference]: Start difference. First operand 12533 states and 15558 transitions. Second operand 7 states. [2020-10-14 22:03:37,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:37,245 INFO L93 Difference]: Finished difference Result 25363 states and 32951 transitions. [2020-10-14 22:03:37,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:03:37,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 648 [2020-10-14 22:03:37,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:37,311 INFO L225 Difference]: With dead ends: 25363 [2020-10-14 22:03:37,311 INFO L226 Difference]: Without dead ends: 15637 [2020-10-14 22:03:37,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:03:37,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15637 states. [2020-10-14 22:03:37,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15637 to 15019. [2020-10-14 22:03:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15019 states. [2020-10-14 22:03:37,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15019 states to 15019 states and 19264 transitions. [2020-10-14 22:03:37,698 INFO L78 Accepts]: Start accepts. Automaton has 15019 states and 19264 transitions. Word has length 648 [2020-10-14 22:03:37,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:37,699 INFO L479 AbstractCegarLoop]: Abstraction has 15019 states and 19264 transitions. [2020-10-14 22:03:37,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:03:37,700 INFO L276 IsEmpty]: Start isEmpty. Operand 15019 states and 19264 transitions. [2020-10-14 22:03:37,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2020-10-14 22:03:37,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:37,727 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:03:37,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:03:37,728 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:37,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:37,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1911809589, now seen corresponding path program 1 times [2020-10-14 22:03:37,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:37,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080672763] [2020-10-14 22:03:37,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:38,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:38,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:39,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:40,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:42,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:42,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 666 [2020-10-14 22:03:42,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:03:42,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 22:03:42,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:42,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-14 22:03:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:03:42,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:43,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:43,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:43,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:43,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:43,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:43,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:03:43,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:43,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:43,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:43,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:43,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:43,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:43,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:03:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:43,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:43,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:43,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:03:43,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:43,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 22:03:43,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:43,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:43,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:43,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:43,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:43,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:43,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:03:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:43,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:43,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:43,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:03:43,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:43,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 22:03:43,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:43,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:43,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:43,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:43,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:03:43,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:43,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 22:03:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:43,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:43,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:43,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:43,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:03:43,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:03:43,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-14 22:03:43,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:43,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:43,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:43,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:43,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:03:43,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 488 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:03:44,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080672763] [2020-10-14 22:03:44,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:03:44,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:03:44,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953793336] [2020-10-14 22:03:44,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:03:44,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:44,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:03:44,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:03:44,002 INFO L87 Difference]: Start difference. First operand 15019 states and 19264 transitions. Second operand 8 states. [2020-10-14 22:03:57,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:57,808 INFO L93 Difference]: Finished difference Result 29467 states and 38133 transitions. [2020-10-14 22:03:57,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:03:57,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 652 [2020-10-14 22:03:57,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:57,869 INFO L225 Difference]: With dead ends: 29467 [2020-10-14 22:03:57,869 INFO L226 Difference]: Without dead ends: 15070 [2020-10-14 22:03:57,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 22:03:57,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15070 states. [2020-10-14 22:03:58,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15070 to 15034. [2020-10-14 22:03:58,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15034 states. [2020-10-14 22:03:58,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15034 states to 15034 states and 17908 transitions. [2020-10-14 22:03:58,264 INFO L78 Accepts]: Start accepts. Automaton has 15034 states and 17908 transitions. Word has length 652 [2020-10-14 22:03:58,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:58,266 INFO L479 AbstractCegarLoop]: Abstraction has 15034 states and 17908 transitions. [2020-10-14 22:03:58,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:03:58,266 INFO L276 IsEmpty]: Start isEmpty. Operand 15034 states and 17908 transitions. [2020-10-14 22:03:58,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2020-10-14 22:03:58,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:58,296 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:03:58,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:03:58,297 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:58,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:58,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1485490833, now seen corresponding path program 1 times [2020-10-14 22:03:58,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:58,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908816928] [2020-10-14 22:03:58,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:58,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:58,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:59,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:59,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:03,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:03,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 682 [2020-10-14 22:04:03,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:04:03,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 22:04:03,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:03,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 22:04:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 22:04:03,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:03,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:03,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:03,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:03,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:03,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:03,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:04:03,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:03,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:03,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:03,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:03,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:03,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:03,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:04:03,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:03,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 22:04:03,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:03,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:03,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 22:04:03,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:03,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:04:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:03,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:03,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:03,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:04:03,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:03,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 22:04:03,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:03,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:04:03,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:04,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 22:04:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:04,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:04,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:04,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 22:04:04,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:04,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 22:04:04,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:04,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 22:04:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:04,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:04,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-14 22:04:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:04,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:04,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:04,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 22:04:04,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:04,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 22:04:04,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:04,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-14 22:04:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:04,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:04,783 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 356 proven. 201 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2020-10-14 22:04:04,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908816928] [2020-10-14 22:04:04,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:04:04,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:04:04,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447513506] [2020-10-14 22:04:04,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:04:04,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:04,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:04:04,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:04:04,785 INFO L87 Difference]: Start difference. First operand 15034 states and 17908 transitions. Second operand 7 states. [2020-10-14 22:04:18,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:18,113 INFO L93 Difference]: Finished difference Result 32048 states and 38352 transitions. [2020-10-14 22:04:18,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:04:18,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 666 [2020-10-14 22:04:18,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:18,162 INFO L225 Difference]: With dead ends: 32048 [2020-10-14 22:04:18,162 INFO L226 Difference]: Without dead ends: 17638 [2020-10-14 22:04:18,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:04:18,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17638 states. [2020-10-14 22:04:18,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17638 to 17269. [2020-10-14 22:04:18,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17269 states. [2020-10-14 22:04:18,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17269 states to 17269 states and 20397 transitions. [2020-10-14 22:04:18,512 INFO L78 Accepts]: Start accepts. Automaton has 17269 states and 20397 transitions. Word has length 666 [2020-10-14 22:04:18,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:18,513 INFO L479 AbstractCegarLoop]: Abstraction has 17269 states and 20397 transitions. [2020-10-14 22:04:18,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:04:18,513 INFO L276 IsEmpty]: Start isEmpty. Operand 17269 states and 20397 transitions. [2020-10-14 22:04:18,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2020-10-14 22:04:18,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:18,543 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:04:18,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:04:18,543 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:18,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:18,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1096702297, now seen corresponding path program 1 times [2020-10-14 22:04:18,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:18,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442224925] [2020-10-14 22:04:18,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:18,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:18,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:20,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:20,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:21,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:23,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:23,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:23,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 694 [2020-10-14 22:04:23,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:04:23,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 22:04:23,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:23,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 505 [2020-10-14 22:04:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 22:04:23,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:23,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:23,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:23,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:23,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:23,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:23,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:04:23,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:23,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:23,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:23,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:23,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:23,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:23,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:23,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:23,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:23,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:04:23,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:23,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 22:04:23,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:23,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:23,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:23,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:04:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:23,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:24,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:24,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:04:24,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:24,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 22:04:24,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:24,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:24,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:24,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:24,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:24,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:24,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:04:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:24,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:24,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:24,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 22:04:24,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:24,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 22:04:24,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:24,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:24,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:24,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:24,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 22:04:24,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:24,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2020-10-14 22:04:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:24,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:24,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:24,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 22:04:24,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:24,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 22:04:24,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:24,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:24,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 22:04:24,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:24,469 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 564 proven. 2 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2020-10-14 22:04:24,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442224925] [2020-10-14 22:04:24,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:04:24,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:04:24,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038866399] [2020-10-14 22:04:24,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:04:24,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:24,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:04:24,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:04:24,472 INFO L87 Difference]: Start difference. First operand 17269 states and 20397 transitions. Second operand 7 states.