/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/Problem04_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:30:04,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:30:04,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:30:04,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:30:04,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:30:04,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:30:04,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:30:04,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:30:04,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:30:04,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:30:04,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:30:04,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:30:04,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:30:04,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:30:04,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:30:04,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:30:04,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:30:04,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:30:04,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:30:04,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:30:04,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:30:04,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:30:04,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:30:04,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:30:04,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:30:04,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:30:04,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:30:04,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:30:04,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:30:04,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:30:04,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:30:04,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:30:04,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:30:04,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:30:04,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:30:04,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:30:04,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:30:04,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:30:04,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:30:04,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:30:04,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:30:04,524 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 19:30:04,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:30:04,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:30:04,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:30:04,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:30:04,559 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:30:04,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:30:04,559 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:30:04,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:30:04,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:30:04,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:30:04,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:30:04,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:30:04,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:30:04,561 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:30:04,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:30:04,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:30:04,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:30:04,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:30:04,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:30:04,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:30:04,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:30:04,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:30:04,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:30:04,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:30:04,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:30:04,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:30:04,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:30:04,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:30:04,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:30:04,564 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 19:30:04,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:30:04,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:30:04,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:30:04,876 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:30:04,876 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:30:04,877 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label44.c [2020-10-14 19:30:04,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19a8b1f6e/bf665730270840f8bfb52cb4b0bd3ae5/FLAG8c6b0f772 [2020-10-14 19:30:05,790 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:30:05,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label44.c [2020-10-14 19:30:05,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19a8b1f6e/bf665730270840f8bfb52cb4b0bd3ae5/FLAG8c6b0f772 [2020-10-14 19:30:06,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19a8b1f6e/bf665730270840f8bfb52cb4b0bd3ae5 [2020-10-14 19:30:06,301 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:30:06,303 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:30:06,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:30:06,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:30:06,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:30:06,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:30:06" (1/1) ... [2020-10-14 19:30:06,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d5d5e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:06, skipping insertion in model container [2020-10-14 19:30:06,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:30:06" (1/1) ... [2020-10-14 19:30:06,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:30:06,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:30:07,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:30:07,984 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:30:08,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:30:08,616 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:30:08,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:08 WrapperNode [2020-10-14 19:30:08,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:30:08,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:30:08,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:30:08,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:30:08,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:08" (1/1) ... [2020-10-14 19:30:08,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:08" (1/1) ... [2020-10-14 19:30:08,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:08" (1/1) ... [2020-10-14 19:30:08,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:08" (1/1) ... [2020-10-14 19:30:08,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:08" (1/1) ... [2020-10-14 19:30:08,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:08" (1/1) ... [2020-10-14 19:30:08,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:08" (1/1) ... [2020-10-14 19:30:08,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:30:08,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:30:08,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:30:08,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:30:08,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:08" (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 19:30:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:30:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:30:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:30:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:30:08,927 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:30:08,927 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:30:08,927 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:30:08,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:30:08,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:30:08,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:30:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:30:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:30:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:30:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:30:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:30:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:30:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:30:13,089 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:30:13,089 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:30:13,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:30:13 BoogieIcfgContainer [2020-10-14 19:30:13,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:30:13,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:30:13,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:30:13,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:30:13,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:30:06" (1/3) ... [2020-10-14 19:30:13,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184a3f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:30:13, skipping insertion in model container [2020-10-14 19:30:13,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:08" (2/3) ... [2020-10-14 19:30:13,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184a3f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:30:13, skipping insertion in model container [2020-10-14 19:30:13,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:30:13" (3/3) ... [2020-10-14 19:30:13,110 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label44.c [2020-10-14 19:30:13,121 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:30:13,130 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:30:13,143 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:30:13,172 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:30:13,172 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:30:13,172 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:30:13,172 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:30:13,172 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:30:13,172 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:30:13,173 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:30:13,173 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:30:13,207 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 19:30:13,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2020-10-14 19:30:13,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:30:13,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:30:13,249 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:30:13,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:30:13,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1766115387, now seen corresponding path program 1 times [2020-10-14 19:30:13,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:30:13,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288977569] [2020-10-14 19:30:13,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:30:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:14,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:18,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:19,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:19,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 808 [2020-10-14 19:30:19,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:30:19,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5242 [2020-10-14 19:30:19,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:19,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:19,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:30:19,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:30:19,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 802 [2020-10-14 19:30:19,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 19:30:20,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:30:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:20,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:20,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:20,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:30:20,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:20,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:30:20,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:20,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:30:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:20,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:30:20,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:30:21,417 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 19:30:21,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288977569] [2020-10-14 19:30:21,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:30:21,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:30:21,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659138361] [2020-10-14 19:30:21,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:30:21,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:30:21,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:30:21,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:30:21,449 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-14 19:30:29,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:30:29,771 INFO L93 Difference]: Finished difference Result 2672 states and 5138 transitions. [2020-10-14 19:30:29,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:30:29,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 794 [2020-10-14 19:30:29,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:30:29,830 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 19:30:29,830 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 19:30:29,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:30:29,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 19:30:30,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1687. [2020-10-14 19:30:30,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-10-14 19:30:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2973 transitions. [2020-10-14 19:30:30,021 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2973 transitions. Word has length 794 [2020-10-14 19:30:30,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:30:30,027 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2973 transitions. [2020-10-14 19:30:30,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:30:30,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2973 transitions. [2020-10-14 19:30:30,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2020-10-14 19:30:30,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:30:30,055 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:30:30,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:30:30,056 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:30:30,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:30:30,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1476746208, now seen corresponding path program 1 times [2020-10-14 19:30:30,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:30:30,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257344945] [2020-10-14 19:30:30,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:30:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:30,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:30,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:35,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:35,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 819 [2020-10-14 19:30:35,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:30:35,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5119 [2020-10-14 19:30:35,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:35,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:35,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 19:30:35,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:30:35,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 718 [2020-10-14 19:30:35,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 19:30:38,018 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 30 [2020-10-14 19:30:38,203 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 35 [2020-10-14 19:30:38,336 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2020-10-14 19:30:38,488 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2020-10-14 19:30:38,693 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 48 [2020-10-14 19:30:39,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:30:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:39,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:39,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:39,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:30:39,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:39,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:30:39,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:39,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:30:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:39,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:30:39,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:30:39,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:30:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:39,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:39,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:39,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:30:39,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:39,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 19:30:39,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:39,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:39,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:30:39,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:39,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:30:39,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:30:44,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:30:44,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257344945] [2020-10-14 19:30:44,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:30:44,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 19:30:44,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76841550] [2020-10-14 19:30:44,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 19:30:44,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:30:44,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 19:30:44,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2020-10-14 19:30:44,085 INFO L87 Difference]: Start difference. First operand 1687 states and 2973 transitions. Second operand 19 states. [2020-10-14 19:30:49,585 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-10-14 19:30:52,726 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 95 [2020-10-14 19:30:53,043 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 103 [2020-10-14 19:30:54,214 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 102 [2020-10-14 19:30:57,413 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 101 [2020-10-14 19:31:01,555 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-10-14 19:31:01,860 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2020-10-14 19:31:03,579 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-10-14 19:31:07,285 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-14 19:31:09,961 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-14 19:31:10,163 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-14 19:31:13,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:31:13,453 INFO L93 Difference]: Finished difference Result 4094 states and 7390 transitions. [2020-10-14 19:31:13,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 19:31:13,455 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 803 [2020-10-14 19:31:13,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:31:13,468 INFO L225 Difference]: With dead ends: 4094 [2020-10-14 19:31:13,468 INFO L226 Difference]: Without dead ends: 2413 [2020-10-14 19:31:13,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2020-10-14 19:31:13,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2020-10-14 19:31:13,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 2409. [2020-10-14 19:31:13,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2409 states. [2020-10-14 19:31:13,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 3712 transitions. [2020-10-14 19:31:13,551 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 3712 transitions. Word has length 803 [2020-10-14 19:31:13,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:31:13,553 INFO L479 AbstractCegarLoop]: Abstraction has 2409 states and 3712 transitions. [2020-10-14 19:31:13,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 19:31:13,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 3712 transitions. [2020-10-14 19:31:13,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2020-10-14 19:31:13,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:31:13,566 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:13,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:31:13,566 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:31:13,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:31:13,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1861581618, now seen corresponding path program 1 times [2020-10-14 19:31:13,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:31:13,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943723220] [2020-10-14 19:31:13,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:31:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:13,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:14,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:16,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:18,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:18,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 830 [2020-10-14 19:31:18,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:31:18,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-14 19:31:18,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:18,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:18,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:31:18,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 19:31:18,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 797 [2020-10-14 19:31:18,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:19,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:31:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:19,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:19,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:19,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:31:19,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:19,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:31:19,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:19,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:31:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:31:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:31:19,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:31:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:19,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:19,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:19,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:31:19,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:19,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 19:31:19,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:19,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:19,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:31:19,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:19,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 19:31:19,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:31:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:31:22,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943723220] [2020-10-14 19:31:22,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:31:22,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:31:22,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722233619] [2020-10-14 19:31:22,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:31:22,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:31:22,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:31:22,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:31:22,812 INFO L87 Difference]: Start difference. First operand 2409 states and 3712 transitions. Second operand 5 states. [2020-10-14 19:31:32,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:31:32,501 INFO L93 Difference]: Finished difference Result 5604 states and 8984 transitions. [2020-10-14 19:31:32,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:31:32,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 814 [2020-10-14 19:31:32,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:31:32,527 INFO L225 Difference]: With dead ends: 5604 [2020-10-14 19:31:32,528 INFO L226 Difference]: Without dead ends: 2413 [2020-10-14 19:31:32,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:31:32,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2020-10-14 19:31:32,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 2409. [2020-10-14 19:31:32,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2409 states. [2020-10-14 19:31:32,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 3710 transitions. [2020-10-14 19:31:32,634 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 3710 transitions. Word has length 814 [2020-10-14 19:31:32,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:31:32,635 INFO L479 AbstractCegarLoop]: Abstraction has 2409 states and 3710 transitions. [2020-10-14 19:31:32,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:31:32,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 3710 transitions. [2020-10-14 19:31:32,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2020-10-14 19:31:32,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:31:32,669 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:32,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:31:32,670 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:31:32,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:31:32,671 INFO L82 PathProgramCache]: Analyzing trace with hash 5119304, now seen corresponding path program 1 times [2020-10-14 19:31:32,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:31:32,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422324241] [2020-10-14 19:31:32,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:31:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:32,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:33,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:35,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:37,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:37,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 831 [2020-10-14 19:31:37,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:31:37,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-14 19:31:37,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:37,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:37,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:31:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 19:31:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 796 [2020-10-14 19:31:37,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:38,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:31:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:38,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:38,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:38,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:31:38,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:38,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:31:38,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:38,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:38,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:31:38,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:38,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:31:38,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:38,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:31:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:38,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:38,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:38,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:31:38,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:38,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:31:38,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:38,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:38,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:31:38,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:38,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 19:31:38,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:41,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:31:41,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422324241] [2020-10-14 19:31:41,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:31:41,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:31:41,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735086648] [2020-10-14 19:31:41,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:31:41,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:31:41,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:31:41,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:31:41,697 INFO L87 Difference]: Start difference. First operand 2409 states and 3710 transitions. Second operand 6 states. [2020-10-14 19:31:51,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:31:51,653 INFO L93 Difference]: Finished difference Result 5603 states and 8978 transitions. [2020-10-14 19:31:51,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:31:51,659 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 815 [2020-10-14 19:31:51,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:31:51,674 INFO L225 Difference]: With dead ends: 5603 [2020-10-14 19:31:51,674 INFO L226 Difference]: Without dead ends: 2413 [2020-10-14 19:31:51,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:31:51,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2020-10-14 19:31:51,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 2409. [2020-10-14 19:31:51,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2409 states. [2020-10-14 19:31:51,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 3708 transitions. [2020-10-14 19:31:51,750 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 3708 transitions. Word has length 815 [2020-10-14 19:31:51,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:31:51,750 INFO L479 AbstractCegarLoop]: Abstraction has 2409 states and 3708 transitions. [2020-10-14 19:31:51,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:31:51,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 3708 transitions. [2020-10-14 19:31:51,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2020-10-14 19:31:51,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:31:51,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:51,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:31:51,765 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:31:51,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:31:51,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1888050564, now seen corresponding path program 1 times [2020-10-14 19:31:51,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:31:51,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035812660] [2020-10-14 19:31:51,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:31:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:51,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:52,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:53,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:56,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:56,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 833 [2020-10-14 19:31:56,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:31:56,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 19:31:56,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:56,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:56,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:31:56,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 19:31:56,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 799 [2020-10-14 19:31:56,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:57,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:31:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:57,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:57,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:57,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:31:57,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:57,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:31:57,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:57,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:57,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:31:57,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:31:57,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:31:57,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:31:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:57,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:57,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:57,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 19:31:57,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:57,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 19:31:57,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:57,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:31:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:57,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:31:57,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 19:31:58,676 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:31:58,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035812660] [2020-10-14 19:31:58,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:31:58,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:31:58,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449346760] [2020-10-14 19:31:58,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:31:58,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:31:58,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:31:58,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:31:58,679 INFO L87 Difference]: Start difference. First operand 2409 states and 3708 transitions. Second operand 5 states. [2020-10-14 19:32:08,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:32:08,268 INFO L93 Difference]: Finished difference Result 6510 states and 10479 transitions. [2020-10-14 19:32:08,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:32:08,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 817 [2020-10-14 19:32:08,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:32:08,297 INFO L225 Difference]: With dead ends: 6510 [2020-10-14 19:32:08,297 INFO L226 Difference]: Without dead ends: 4107 [2020-10-14 19:32:08,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:32:08,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2020-10-14 19:32:08,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 4099. [2020-10-14 19:32:08,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4099 states. [2020-10-14 19:32:08,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 5951 transitions. [2020-10-14 19:32:08,415 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 5951 transitions. Word has length 817 [2020-10-14 19:32:08,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:32:08,416 INFO L479 AbstractCegarLoop]: Abstraction has 4099 states and 5951 transitions. [2020-10-14 19:32:08,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:32:08,417 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 5951 transitions. [2020-10-14 19:32:08,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2020-10-14 19:32:08,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:32:08,439 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:08,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:32:08,440 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:32:08,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:32:08,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1414149606, now seen corresponding path program 1 times [2020-10-14 19:32:08,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:32:08,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674672602] [2020-10-14 19:32:08,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:32:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:08,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:09,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:11,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:13,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:13,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 836 [2020-10-14 19:32:13,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:32:13,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 19:32:13,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:13,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:32:13,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 19:32:13,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 799 [2020-10-14 19:32:13,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:14,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:32:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:14,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:14,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:14,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:32:14,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:14,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:32:14,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:14,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:14,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:32:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:32:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:32:14,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:32:14,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:32:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:14,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:14,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:14,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 19:32:14,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:14,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 19:32:14,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:14,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:14,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:32:14,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:32:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 19:32:14,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:32:15,712 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:32:15,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674672602] [2020-10-14 19:32:15,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:32:15,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:32:15,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485325719] [2020-10-14 19:32:15,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:32:15,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:32:15,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:32:15,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:32:15,715 INFO L87 Difference]: Start difference. First operand 4099 states and 5951 transitions. Second operand 6 states. [2020-10-14 19:32:29,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:32:29,714 INFO L93 Difference]: Finished difference Result 14953 states and 22725 transitions. [2020-10-14 19:32:29,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:32:29,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 820 [2020-10-14 19:32:29,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:32:29,766 INFO L225 Difference]: With dead ends: 14953 [2020-10-14 19:32:29,767 INFO L226 Difference]: Without dead ends: 10860 [2020-10-14 19:32:29,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:32:29,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10860 states. [2020-10-14 19:32:29,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10860 to 10856. [2020-10-14 19:32:29,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10856 states. [2020-10-14 19:32:30,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10856 states to 10856 states and 15443 transitions. [2020-10-14 19:32:30,020 INFO L78 Accepts]: Start accepts. Automaton has 10856 states and 15443 transitions. Word has length 820 [2020-10-14 19:32:30,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:32:30,022 INFO L479 AbstractCegarLoop]: Abstraction has 10856 states and 15443 transitions. [2020-10-14 19:32:30,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:32:30,022 INFO L276 IsEmpty]: Start isEmpty. Operand 10856 states and 15443 transitions. [2020-10-14 19:32:30,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2020-10-14 19:32:30,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:32:30,069 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:30,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:32:30,069 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:32:30,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:32:30,070 INFO L82 PathProgramCache]: Analyzing trace with hash 960302537, now seen corresponding path program 1 times [2020-10-14 19:32:30,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:32:30,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870662646] [2020-10-14 19:32:30,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:32:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:30,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:30,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:32,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:35,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:35,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:35,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 900 [2020-10-14 19:32:35,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:32:35,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-14 19:32:35,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:35,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:35,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:32:35,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 19:32:35,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 670 [2020-10-14 19:32:35,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:37,789 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-14 19:32:37,982 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2020-10-14 19:32:38,272 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 54 [2020-10-14 19:32:38,448 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2020-10-14 19:32:38,606 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-14 19:32:38,796 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-10-14 19:32:39,027 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 47 [2020-10-14 19:32:39,253 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 44 [2020-10-14 19:32:39,453 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 39 [2020-10-14 19:32:39,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:32:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:39,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:39,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:39,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:32:39,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:39,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:32:39,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:39,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:39,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:32:39,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:32:39,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:32:39,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:39,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:32:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:39,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:39,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:39,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:32:39,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:39,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:32:39,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:39,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:39,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:32:39,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:32:39,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:32:39,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:39,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 19:32:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:39,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:39,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:39,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 19:32:39,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:39,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 19:32:39,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:39,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:39,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:32:39,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:32:39,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 19:32:39,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:46,709 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:32:46,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870662646] [2020-10-14 19:32:46,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:32:46,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 19:32:46,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248687394] [2020-10-14 19:32:46,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 19:32:46,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:32:46,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 19:32:46,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:32:46,712 INFO L87 Difference]: Start difference. First operand 10856 states and 15443 transitions. Second operand 17 states. [2020-10-14 19:32:48,010 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-14 19:32:48,179 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-14 19:32:54,254 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-14 19:32:54,464 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-14 19:32:58,713 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 111 [2020-10-14 19:32:59,871 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2020-10-14 19:33:01,544 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-14 19:33:01,757 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-14 19:33:02,309 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 110 [2020-10-14 19:33:06,278 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 107 [2020-10-14 19:33:06,831 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 102 [2020-10-14 19:33:09,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:33:09,226 INFO L93 Difference]: Finished difference Result 22373 states and 32271 transitions. [2020-10-14 19:33:09,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 19:33:09,227 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 882 [2020-10-14 19:33:09,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:33:09,275 INFO L225 Difference]: With dead ends: 22373 [2020-10-14 19:33:09,276 INFO L226 Difference]: Without dead ends: 11523 [2020-10-14 19:33:09,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-10-14 19:33:09,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11523 states. [2020-10-14 19:33:09,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11523 to 11519. [2020-10-14 19:33:09,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11519 states. [2020-10-14 19:33:09,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11519 states to 11519 states and 16124 transitions. [2020-10-14 19:33:09,509 INFO L78 Accepts]: Start accepts. Automaton has 11519 states and 16124 transitions. Word has length 882 [2020-10-14 19:33:09,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:33:09,510 INFO L479 AbstractCegarLoop]: Abstraction has 11519 states and 16124 transitions. [2020-10-14 19:33:09,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 19:33:09,510 INFO L276 IsEmpty]: Start isEmpty. Operand 11519 states and 16124 transitions. [2020-10-14 19:33:09,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2020-10-14 19:33:09,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:33:09,550 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:09,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:33:09,550 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:33:09,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:33:09,551 INFO L82 PathProgramCache]: Analyzing trace with hash -608761603, now seen corresponding path program 1 times [2020-10-14 19:33:09,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:33:09,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618424540] [2020-10-14 19:33:09,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:33:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:09,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:09,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:12,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:12,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:14,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:14,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 938 [2020-10-14 19:33:14,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:33:14,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-14 19:33:14,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:14,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:14,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:33:14,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-14 19:33:14,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 799 [2020-10-14 19:33:14,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:15,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:33:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:15,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:15,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:15,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:33:15,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:15,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:33:15,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:15,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:15,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:33:15,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:33:15,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:33:15,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:15,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:33:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:15,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:15,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:15,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:33:15,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:15,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:33:15,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:15,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:15,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:33:15,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:33:15,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:33:15,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:15,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 19:33:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:15,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:15,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:15,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 19:33:15,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:15,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 19:33:15,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:15,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:15,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:33:15,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:33:15,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 19:33:15,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:33:16,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618424540] [2020-10-14 19:33:16,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:33:16,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:33:16,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609027698] [2020-10-14 19:33:16,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:33:16,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:33:16,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:33:16,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:33:16,491 INFO L87 Difference]: Start difference. First operand 11519 states and 16124 transitions. Second operand 5 states. [2020-10-14 19:33:26,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:33:26,415 INFO L93 Difference]: Finished difference Result 32338 states and 46766 transitions. [2020-10-14 19:33:26,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:33:26,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 920 [2020-10-14 19:33:26,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:33:26,500 INFO L225 Difference]: With dead ends: 32338 [2020-10-14 19:33:26,501 INFO L226 Difference]: Without dead ends: 20825 [2020-10-14 19:33:26,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:33:26,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20825 states. [2020-10-14 19:33:26,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20825 to 20821. [2020-10-14 19:33:26,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20821 states. [2020-10-14 19:33:27,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20821 states to 20821 states and 29077 transitions. [2020-10-14 19:33:27,035 INFO L78 Accepts]: Start accepts. Automaton has 20821 states and 29077 transitions. Word has length 920 [2020-10-14 19:33:27,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:33:27,035 INFO L479 AbstractCegarLoop]: Abstraction has 20821 states and 29077 transitions. [2020-10-14 19:33:27,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:33:27,036 INFO L276 IsEmpty]: Start isEmpty. Operand 20821 states and 29077 transitions. [2020-10-14 19:33:27,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2020-10-14 19:33:27,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:33:27,111 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:33:27,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:33:27,112 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:33:27,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:33:27,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1113567052, now seen corresponding path program 1 times [2020-10-14 19:33:27,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:33:27,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163241283] [2020-10-14 19:33:27,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:33:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:27,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:27,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:27,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:28,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:30,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:32,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:32,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 992 [2020-10-14 19:33:32,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:33:32,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-14 19:33:32,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:32,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:33:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 19:33:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-14 19:33:32,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:32,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:33:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:32,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:32,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:32,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:33:32,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:32,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:33:32,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:32,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:33:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:33:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:33:32,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:32,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:33:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:32,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:32,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:32,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:33:32,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:32,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:33:32,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:32,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:32,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:33:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:33:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 19:33:32,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:32,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 19:33:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:32,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:32,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:32,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:32,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 19:33:32,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:33:32,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 19:33:32,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:32,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:32,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:33:32,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:33:32,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 19:33:32,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:32,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 19:33:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:32,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:32,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:32,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 19:33:32,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:32,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 19:33:32,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:32,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:32,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:33:32,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:33:32,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 19:33:32,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:33,203 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 235 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 19:33:33,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163241283] [2020-10-14 19:33:33,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:33:33,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:33:33,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239559692] [2020-10-14 19:33:33,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:33:33,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:33:33,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:33:33,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:33:33,206 INFO L87 Difference]: Start difference. First operand 20821 states and 29077 transitions. Second operand 7 states. [2020-10-14 19:33:45,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:33:45,957 INFO L93 Difference]: Finished difference Result 51373 states and 77234 transitions. [2020-10-14 19:33:45,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:33:45,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 972 [2020-10-14 19:33:45,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:33:46,076 INFO L225 Difference]: With dead ends: 51373 [2020-10-14 19:33:46,076 INFO L226 Difference]: Without dead ends: 30558 [2020-10-14 19:33:46,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:33:46,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30558 states.