/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/prefixsum_iter.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 10:23:55,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:23:55,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:23:55,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:23:55,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:23:55,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:23:55,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:23:55,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:23:55,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:23:55,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:23:55,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:23:55,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:23:55,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:23:55,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:23:55,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:23:55,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:23:55,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:23:55,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:23:55,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:23:55,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:23:55,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:23:55,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:23:55,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:23:55,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:23:55,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:23:55,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:23:55,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:23:55,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:23:55,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:23:55,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:23:55,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:23:55,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:23:55,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:23:55,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:23:55,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:23:55,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:23:55,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:23:55,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:23:55,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:23:55,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:23:55,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:23:55,580 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 10:23:55,624 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:23:55,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:23:55,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:23:55,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:23:55,626 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:23:55,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:23:55,626 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:23:55,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:23:55,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:23:55,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:23:55,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:23:55,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:23:55,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:23:55,628 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:23:55,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:23:55,628 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:23:55,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:23:55,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:23:55,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:23:55,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:23:55,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:23:55,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:23:55,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:23:55,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:23:55,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:23:55,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:23:55,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:23:55,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:23:55,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:23:55,632 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 10:23:55,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:23:55,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:23:55,950 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:23:55,952 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:23:55,952 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:23:55,953 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/prefixsum_iter.c [2020-10-14 10:23:56,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d4722b63/5e655217f98b4efaabaa9eea905c8949/FLAG0829f138a [2020-10-14 10:23:56,481 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:23:56,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/prefixsum_iter.c [2020-10-14 10:23:56,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d4722b63/5e655217f98b4efaabaa9eea905c8949/FLAG0829f138a [2020-10-14 10:23:56,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d4722b63/5e655217f98b4efaabaa9eea905c8949 [2020-10-14 10:23:56,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:23:56,892 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:23:56,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:23:56,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:23:56,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:23:56,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:23:56" (1/1) ... [2020-10-14 10:23:56,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67a37f85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:56, skipping insertion in model container [2020-10-14 10:23:56,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:23:56" (1/1) ... [2020-10-14 10:23:56,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:23:56,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:23:57,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:23:57,130 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:23:57,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:23:57,265 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:23:57,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:57 WrapperNode [2020-10-14 10:23:57,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:23:57,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:23:57,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:23:57,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:23:57,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:57" (1/1) ... [2020-10-14 10:23:57,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:57" (1/1) ... [2020-10-14 10:23:57,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:57" (1/1) ... [2020-10-14 10:23:57,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:57" (1/1) ... [2020-10-14 10:23:57,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:57" (1/1) ... [2020-10-14 10:23:57,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:57" (1/1) ... [2020-10-14 10:23:57,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:57" (1/1) ... [2020-10-14 10:23:57,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:23:57,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:23:57,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:23:57,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:23:57,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:57" (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 10:23:57,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:23:57,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:23:57,377 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 10:23:57,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 10:23:57,377 INFO L138 BoogieDeclarations]: Found implementation of procedure upsweep [2020-10-14 10:23:57,377 INFO L138 BoogieDeclarations]: Found implementation of procedure downsweep [2020-10-14 10:23:57,377 INFO L138 BoogieDeclarations]: Found implementation of procedure is_pow2 [2020-10-14 10:23:57,378 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-14 10:23:57,378 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:23:57,378 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-14 10:23:57,378 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 10:23:57,378 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 10:23:57,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:23:57,378 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 10:23:57,379 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 10:23:57,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:23:57,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 10:23:57,379 INFO L130 BoogieDeclarations]: Found specification of procedure upsweep [2020-10-14 10:23:57,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 10:23:57,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 10:23:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure downsweep [2020-10-14 10:23:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure is_pow2 [2020-10-14 10:23:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 10:23:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:23:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 10:23:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-14 10:23:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 10:23:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:23:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:23:57,774 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:23:57,775 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-14 10:23:57,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:23:57 BoogieIcfgContainer [2020-10-14 10:23:57,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:23:57,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:23:57,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:23:57,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:23:57,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:23:56" (1/3) ... [2020-10-14 10:23:57,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7965931d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:23:57, skipping insertion in model container [2020-10-14 10:23:57,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:57" (2/3) ... [2020-10-14 10:23:57,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7965931d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:23:57, skipping insertion in model container [2020-10-14 10:23:57,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:23:57" (3/3) ... [2020-10-14 10:23:57,787 INFO L109 eAbstractionObserver]: Analyzing ICFG prefixsum_iter.c [2020-10-14 10:23:57,797 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:23:57,804 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:23:57,818 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:23:57,840 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:23:57,840 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:23:57,840 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:23:57,840 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:23:57,840 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:23:57,840 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:23:57,840 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:23:57,841 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:23:57,859 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-10-14 10:23:57,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 10:23:57,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:23:57,868 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] [2020-10-14 10:23:57,868 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:23:57,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:23:57,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1341293260, now seen corresponding path program 1 times [2020-10-14 10:23:57,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:23:57,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492511526] [2020-10-14 10:23:57,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:23:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:58,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:58,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:58,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:58,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:58,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:02,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:02,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 10:24:02,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:24:02,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4453 [2020-10-14 10:24:02,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:02,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:02,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:02,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 10:24:02,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:02,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 10:24:02,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:24:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:02,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:02,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:02,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:02,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:02,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:02,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:02,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:02,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:02,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:02,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:02,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:02,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:24:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:02,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:02,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:02,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:02,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:02,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:24:02,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:02,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:02,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:02,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 10:24:02,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:02,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:02,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:24:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:02,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:02,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:02,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:24:02,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:02,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 10:24:02,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:02,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 10:24:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:02,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:02,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 10:24:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:02,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:02,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:02,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:02,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:02,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:24:02,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:02,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:02,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 10:24:02,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:02,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:24:02,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 10:24:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:02,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:02,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:02,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:02,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:02,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:24:02,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:02,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:02,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:02,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 10:24:02,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:02,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:02,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 10:24:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:02,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:02,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:02,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:02,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:02,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:02,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:02,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 10:24:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:02,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:02,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 10:24:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:02,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:02,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:02,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:24:02,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:02,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:24:02,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:02,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 10:24:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:02,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:02,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 10:24:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:02,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:02,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:02,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:02,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:02,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:24:02,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:02,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 10:24:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:02,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 10:24:02,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492511526] [2020-10-14 10:24:02,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:24:02,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 10:24:02,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205847173] [2020-10-14 10:24:02,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:24:02,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:24:02,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:24:02,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:24:02,711 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 4 states. [2020-10-14 10:24:02,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:24:02,977 INFO L93 Difference]: Finished difference Result 127 states and 171 transitions. [2020-10-14 10:24:02,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:24:02,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-14 10:24:02,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:24:02,993 INFO L225 Difference]: With dead ends: 127 [2020-10-14 10:24:02,994 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 10:24:02,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:24:03,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 10:24:03,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2020-10-14 10:24:03,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 10:24:03,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2020-10-14 10:24:03,088 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 54 [2020-10-14 10:24:03,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:24:03,089 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2020-10-14 10:24:03,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:24:03,089 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2020-10-14 10:24:03,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 10:24:03,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:24:03,095 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] [2020-10-14 10:24:03,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:24:03,095 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:24:03,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:24:03,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1025582664, now seen corresponding path program 1 times [2020-10-14 10:24:03,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:24:03,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086667516] [2020-10-14 10:24:03,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:24:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:03,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:03,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:03,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:04,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:04,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:04,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:04,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:08,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:08,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 10:24:08,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:24:08,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 10:24:08,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:08,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:08,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:24:08,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 10:24:08,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 10:24:08,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:08,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:24:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:08,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:08,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:08,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:08,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:08,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:24:08,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:08,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:08,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:08,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:24:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:08,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:08,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:08,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:08,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:08,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:24:08,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:08,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:08,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:08,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:08,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:08,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:08,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:24:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:08,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:08,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:08,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:24:08,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:08,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:24:08,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:08,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:08,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:08,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:08,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:08,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:08,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 10:24:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:08,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:08,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:08,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:08,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:08,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:24:08,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:08,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:08,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:08,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:08,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:08,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:08,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 10:24:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:08,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:08,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:08,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:08,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:08,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:08,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:08,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:08,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:08,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:08,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:08,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:08,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 10:24:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:08,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:08,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:08,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:08,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:08,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:08,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:08,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:08,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:08,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:08,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:08,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:08,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 10:24:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:08,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:08,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:08,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:24:08,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:08,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:24:08,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:08,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:24:08,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:08,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 10:24:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:08,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:08,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:08,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:08,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:08,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:24:08,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:08,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:08,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:08,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:08,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:24:08,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:08,329 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 10:24:08,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086667516] [2020-10-14 10:24:08,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:24:08,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 10:24:08,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564594790] [2020-10-14 10:24:08,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 10:24:08,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:24:08,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 10:24:08,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:24:08,335 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand 8 states. [2020-10-14 10:24:08,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:24:08,790 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2020-10-14 10:24:08,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 10:24:08,790 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-10-14 10:24:08,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:24:08,793 INFO L225 Difference]: With dead ends: 81 [2020-10-14 10:24:08,793 INFO L226 Difference]: Without dead ends: 65 [2020-10-14 10:24:08,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-14 10:24:08,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-14 10:24:08,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2020-10-14 10:24:08,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 10:24:08,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2020-10-14 10:24:08,826 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 54 [2020-10-14 10:24:08,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:24:08,827 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2020-10-14 10:24:08,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 10:24:08,827 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2020-10-14 10:24:08,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 10:24:08,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:24:08,832 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] [2020-10-14 10:24:08,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:24:08,832 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:24:08,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:24:08,833 INFO L82 PathProgramCache]: Analyzing trace with hash -956675542, now seen corresponding path program 1 times [2020-10-14 10:24:08,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:24:08,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028226745] [2020-10-14 10:24:08,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:24:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:08,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:08,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:09,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:09,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:11,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:13,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:13,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 10:24:13,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:24:13,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:24:13,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:13,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:13,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 10:24:13,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 10:24:13,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 10:24:13,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:14,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:24:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:14,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:14,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:14,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:14,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:14,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:14,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:14,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:14,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:14,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:14,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:14,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:14,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:24:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:14,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:14,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:14,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:14,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:14,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:14,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:14,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:14,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:14,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:14,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:14,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:14,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:24:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:14,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:14,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:14,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:24:14,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:14,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:24:14,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:14,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:14,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:14,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 10:24:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:14,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:14,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:14,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:14,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:14,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:24:14,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:14,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:14,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:14,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:14,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 10:24:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:14,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:14,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:14,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:14,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:14,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:14,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:14,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:14,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:14,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:14,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:14,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:14,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 10:24:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:14,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:14,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:14,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:14,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:14,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:14,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:14,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:14,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:14,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 10:24:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:14,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:14,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:14,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:14,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:24:14,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:24:14,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 10:24:14,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:14,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:24:14,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:14,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 10:24:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:14,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:14,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:14,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:14,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:14,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 10:24:14,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:14,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:14,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:24:14,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:14,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:24:14,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 10:24:14,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028226745] [2020-10-14 10:24:14,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:24:14,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 10:24:14,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905810167] [2020-10-14 10:24:14,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 10:24:14,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:24:14,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 10:24:14,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-14 10:24:14,138 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 14 states. [2020-10-14 10:24:15,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:24:15,020 INFO L93 Difference]: Finished difference Result 91 states and 109 transitions. [2020-10-14 10:24:15,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 10:24:15,020 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-10-14 10:24:15,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:24:15,022 INFO L225 Difference]: With dead ends: 91 [2020-10-14 10:24:15,022 INFO L226 Difference]: Without dead ends: 89 [2020-10-14 10:24:15,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2020-10-14 10:24:15,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-14 10:24:15,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 76. [2020-10-14 10:24:15,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-14 10:24:15,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2020-10-14 10:24:15,037 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 56 [2020-10-14 10:24:15,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:24:15,037 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2020-10-14 10:24:15,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 10:24:15,038 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2020-10-14 10:24:15,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 10:24:15,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:24:15,039 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 10:24:15,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:24:15,040 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:24:15,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:24:15,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1058667916, now seen corresponding path program 2 times [2020-10-14 10:24:15,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:24:15,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279016003] [2020-10-14 10:24:15,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:24:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:15,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:15,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:15,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:15,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:15,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:19,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:19,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:19,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:19,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 10:24:20,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 10:24:20,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 10:24:20,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 10:24:20,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 10:24:20,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:24:20,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:20,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:24:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:20,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:20,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:20,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:20,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:20,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:20,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:20,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:20,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:24:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:20,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:20,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:20,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:20,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:20,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:20,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:20,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:20,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:24:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:20,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:24:20,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:20,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 10:24:20,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:24:20,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:20,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 10:24:20,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:20,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 10:24:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:20,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:20,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:20,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:20,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:20,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:20,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:24:20,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:20,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 10:24:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:20,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:20,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:20,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:24:20,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:20,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:20,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:24:20,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:20,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 10:24:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:20,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:20,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:20,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:24:20,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:20,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:20,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:24:20,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:20,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 10:24:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:20,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:24:20,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:20,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:24:20,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:20,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 10:24:20,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:20,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:20,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 10:24:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:20,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:20,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:20,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:24:20,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 10:24:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:20,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 10:24:20,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279016003] [2020-10-14 10:24:20,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:24:20,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 10:24:20,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490804169] [2020-10-14 10:24:20,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 10:24:20,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:24:20,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 10:24:20,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 10:24:20,347 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand 11 states. [2020-10-14 10:24:21,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:24:21,031 INFO L93 Difference]: Finished difference Result 141 states and 179 transitions. [2020-10-14 10:24:21,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 10:24:21,032 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-14 10:24:21,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:24:21,034 INFO L225 Difference]: With dead ends: 141 [2020-10-14 10:24:21,034 INFO L226 Difference]: Without dead ends: 108 [2020-10-14 10:24:21,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2020-10-14 10:24:21,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-14 10:24:21,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 92. [2020-10-14 10:24:21,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-14 10:24:21,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 111 transitions. [2020-10-14 10:24:21,050 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 111 transitions. Word has length 58 [2020-10-14 10:24:21,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:24:21,050 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 111 transitions. [2020-10-14 10:24:21,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 10:24:21,051 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 111 transitions. [2020-10-14 10:24:21,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 10:24:21,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:24:21,052 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 10:24:21,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:24:21,053 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:24:21,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:24:21,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1102253812, now seen corresponding path program 1 times [2020-10-14 10:24:21,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:24:21,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11305928] [2020-10-14 10:24:21,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:24:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:21,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:21,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:21,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:22,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:24,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:24,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:25,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:26,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:26,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 10:24:26,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:24:26,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:24:26,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:26,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:26,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 10:24:26,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 10:24:26,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 10:24:26,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:26,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:24:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:26,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:26,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:26,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:26,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:26,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:26,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:26,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:26,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:26,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:24:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:26,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:26,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:26,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:26,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:26,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:26,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:26,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:26,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:26,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:26,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:26,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:26,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:24:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:26,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:26,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:26,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 10:24:26,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:26,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 10:24:26,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:26,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:24:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:24:26,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:26,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 10:24:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:26,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:26,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:26,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:26,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:26,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:26,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:26,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:26,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:26,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:24:26,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:26,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 10:24:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:26,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:26,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:26,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:26,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:26,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:26,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:26,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:26,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:26,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:26,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:24:26,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:26,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 10:24:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:26,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:26,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:26,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:26,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:26,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:26,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:26,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:26,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:26,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:26,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:24:26,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:26,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 10:24:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:26,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:26,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:26,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:24:26,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:26,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:24:26,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:26,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:26,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:24:26,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 10:24:26,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:24:26,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:26,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 10:24:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:26,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:26,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:26,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:26,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:26,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:26,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:26,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:26,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:26,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 10:24:26,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:26,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 10:24:26,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11305928] [2020-10-14 10:24:26,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:24:26,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 10:24:26,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279399360] [2020-10-14 10:24:26,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 10:24:26,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:24:26,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 10:24:26,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 10:24:26,297 INFO L87 Difference]: Start difference. First operand 92 states and 111 transitions. Second operand 11 states. [2020-10-14 10:24:26,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:24:26,858 INFO L93 Difference]: Finished difference Result 151 states and 194 transitions. [2020-10-14 10:24:26,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 10:24:26,859 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-10-14 10:24:26,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:24:26,861 INFO L225 Difference]: With dead ends: 151 [2020-10-14 10:24:26,861 INFO L226 Difference]: Without dead ends: 116 [2020-10-14 10:24:26,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-10-14 10:24:26,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-14 10:24:26,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 100. [2020-10-14 10:24:26,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 10:24:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2020-10-14 10:24:26,879 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 59 [2020-10-14 10:24:26,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:24:26,879 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2020-10-14 10:24:26,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 10:24:26,880 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2020-10-14 10:24:26,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 10:24:26,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:24:26,881 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] [2020-10-14 10:24:26,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 10:24:26,882 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:24:26,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:24:26,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1790550297, now seen corresponding path program 1 times [2020-10-14 10:24:26,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:24:26,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917167266] [2020-10-14 10:24:26,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:24:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:26,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:26,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:31,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 10:24:31,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 10:24:31,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 10:24:31,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:31,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 10:24:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 10:24:31,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 10:24:31,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:31,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:24:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:31,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:31,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:31,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:31,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:31,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:31,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:31,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:31,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:31,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:31,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:31,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:24:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:31,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:31,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:31,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:31,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:31,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:31,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:31,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:31,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:31,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:31,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:31,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:24:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:31,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:31,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:24:31,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:31,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:31,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:31,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:31,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:31,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:31,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:31,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:31,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 10:24:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:31,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:31,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:31,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:31,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:24:31,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:31,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:31,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:31,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:31,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:31,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:31,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 10:24:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:31,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:31,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:31,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:31,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:31,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:31,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:31,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:31,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:31,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:31,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:31,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 10:24:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:31,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:31,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:31,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:31,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:31,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:31,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:31,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:31,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:31,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:31,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:31,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 10:24:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:31,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:32,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:32,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:24:32,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:24:32,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 10:24:32,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:32,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:32,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:32,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:32,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:24:32,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:32,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 10:24:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:32,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:32,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:32,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 10:24:32,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:32,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 10:24:32,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:32,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:32,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:24:32,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 10:24:32,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 10:24:32,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:32,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 10:24:32,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917167266] [2020-10-14 10:24:32,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:24:32,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 10:24:32,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892910047] [2020-10-14 10:24:32,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 10:24:32,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:24:32,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 10:24:32,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 10:24:32,085 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand 10 states. [2020-10-14 10:24:32,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:24:32,532 INFO L93 Difference]: Finished difference Result 123 states and 155 transitions. [2020-10-14 10:24:32,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 10:24:32,533 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 60 [2020-10-14 10:24:32,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:24:32,535 INFO L225 Difference]: With dead ends: 123 [2020-10-14 10:24:32,535 INFO L226 Difference]: Without dead ends: 111 [2020-10-14 10:24:32,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-14 10:24:32,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-14 10:24:32,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 100. [2020-10-14 10:24:32,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 10:24:32,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 123 transitions. [2020-10-14 10:24:32,552 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 123 transitions. Word has length 60 [2020-10-14 10:24:32,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:24:32,552 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 123 transitions. [2020-10-14 10:24:32,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 10:24:32,552 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 123 transitions. [2020-10-14 10:24:32,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 10:24:32,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:24:32,554 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:24:32,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 10:24:32,554 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:24:32,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:24:32,555 INFO L82 PathProgramCache]: Analyzing trace with hash 773480558, now seen corresponding path program 3 times [2020-10-14 10:24:32,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:24:32,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273582737] [2020-10-14 10:24:32,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:24:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:32,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:32,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:32,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:32,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:32,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:33,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:33,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:33,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:35,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:35,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:36,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:36,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:37,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:37,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 10:24:37,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 10:24:37,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 10:24:37,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:37,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:37,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:24:37,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 10:24:37,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:24:37,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:37,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:24:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:37,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:37,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:37,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:37,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:37,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:37,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:37,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:37,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:37,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:37,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:37,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:37,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:24:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:37,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:37,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:37,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:37,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:37,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:24:37,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:37,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:37,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:37,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:37,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:37,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:37,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:24:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:37,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:37,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:37,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:24:37,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:37,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:24:37,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:37,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:37,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:37,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:37,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:37,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:37,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 10:24:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:37,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:37,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:37,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:37,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:37,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:37,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:37,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:37,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:37,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:37,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:37,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 10:24:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:37,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:37,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:37,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:37,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:37,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:37,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:37,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:37,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:37,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:37,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:37,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:37,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 10:24:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:37,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:37,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:37,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:37,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:37,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:37,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:37,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:37,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:37,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 10:24:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:37,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:37,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:37,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:24:37,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:37,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:24:37,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:37,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:37,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:24:37,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 10:24:37,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:24:37,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:37,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 10:24:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:37,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:37,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:37,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:37,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:37,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:24:37,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:37,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:37,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:37,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 10:24:37,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:37,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:37,687 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 10:24:37,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273582737] [2020-10-14 10:24:37,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:24:37,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 10:24:37,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782932769] [2020-10-14 10:24:37,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 10:24:37,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:24:37,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 10:24:37,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 10:24:37,690 INFO L87 Difference]: Start difference. First operand 100 states and 123 transitions. Second operand 9 states. [2020-10-14 10:24:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:24:38,048 INFO L93 Difference]: Finished difference Result 135 states and 169 transitions. [2020-10-14 10:24:38,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 10:24:38,050 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-14 10:24:38,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:24:38,052 INFO L225 Difference]: With dead ends: 135 [2020-10-14 10:24:38,052 INFO L226 Difference]: Without dead ends: 110 [2020-10-14 10:24:38,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-14 10:24:38,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-14 10:24:38,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 97. [2020-10-14 10:24:38,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 10:24:38,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 117 transitions. [2020-10-14 10:24:38,066 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 117 transitions. Word has length 60 [2020-10-14 10:24:38,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:24:38,066 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 117 transitions. [2020-10-14 10:24:38,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 10:24:38,066 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 117 transitions. [2020-10-14 10:24:38,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 10:24:38,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:24:38,067 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 10:24:38,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 10:24:38,068 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:24:38,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:24:38,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1624245670, now seen corresponding path program 1 times [2020-10-14 10:24:38,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:24:38,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38838485] [2020-10-14 10:24:38,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:24:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:38,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:38,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:38,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:38,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:38,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:38,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:38,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:38,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:41,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:42,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:42,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:43,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:43,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 10:24:43,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 10:24:43,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 10:24:43,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:43,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:43,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:43,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 10:24:43,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 10:24:43,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:43,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:24:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:43,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:43,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:43,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:43,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:43,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:43,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:43,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:43,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:43,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:43,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:43,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:43,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:24:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:43,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:43,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:43,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:43,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:43,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:43,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:43,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:43,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:43,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:24:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:43,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:43,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:43,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 10:24:43,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:43,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:24:43,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:43,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:43,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:43,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 10:24:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:43,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:43,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:43,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:43,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:43,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:24:43,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:43,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:43,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:43,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:43,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:43,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 10:24:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:43,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:43,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:43,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:43,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:43,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:43,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:43,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:43,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:43,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:43,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:43,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:43,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 10:24:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:43,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:43,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:43,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:43,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:43,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:43,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:43,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:43,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:43,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:43,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:43,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:43,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 10:24:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:43,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:43,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:43,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 10:24:43,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:43,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:24:43,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:43,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:43,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 10:24:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 10:24:43,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:43,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 10:24:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:43,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:43,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:43,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:43,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:43,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:43,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:43,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:43,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:43,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 10:24:43,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:43,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:43,167 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 10:24:43,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38838485] [2020-10-14 10:24:43,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:24:43,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:24:43,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678784856] [2020-10-14 10:24:43,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:24:43,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:24:43,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:24:43,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:24:43,169 INFO L87 Difference]: Start difference. First operand 97 states and 117 transitions. Second operand 5 states. [2020-10-14 10:24:43,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:24:43,374 INFO L93 Difference]: Finished difference Result 140 states and 171 transitions. [2020-10-14 10:24:43,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 10:24:43,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-14 10:24:43,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:24:43,376 INFO L225 Difference]: With dead ends: 140 [2020-10-14 10:24:43,376 INFO L226 Difference]: Without dead ends: 99 [2020-10-14 10:24:43,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:24:43,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-14 10:24:43,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2020-10-14 10:24:43,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-14 10:24:43,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 118 transitions. [2020-10-14 10:24:43,389 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 118 transitions. Word has length 62 [2020-10-14 10:24:43,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:24:43,390 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 118 transitions. [2020-10-14 10:24:43,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:24:43,390 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 118 transitions. [2020-10-14 10:24:43,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 10:24:43,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:24:43,391 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 10:24:43,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 10:24:43,392 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:24:43,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:24:43,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1487053599, now seen corresponding path program 1 times [2020-10-14 10:24:43,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:24:43,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144634799] [2020-10-14 10:24:43,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:24:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:43,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:43,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:43,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:43,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:45,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:45,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:45,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:45,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:48,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:48,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 10:24:48,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 10:24:48,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 10:24:48,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:48,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 10:24:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 10:24:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:24:48,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:48,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:24:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:48,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:48,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:48,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:48,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:48,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:48,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:48,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:48,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:48,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:48,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:24:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:48,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:48,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:48,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:48,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:48,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:24:48,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:48,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:48,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:48,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:48,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:48,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:48,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:24:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:48,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:48,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:48,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:24:48,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:48,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:48,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:48,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:48,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:48,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 10:24:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:48,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:48,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:48,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:48,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:48,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:24:48,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:48,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:48,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:48,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:48,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:48,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:48,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 10:24:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:48,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:48,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:48,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:48,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:48,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:48,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:48,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:48,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:48,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:48,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:48,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:48,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 10:24:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:48,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:48,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:48,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:48,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:48,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:48,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:48,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:48,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:48,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:48,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:48,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:48,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 10:24:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:48,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:48,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:48,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:48,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:24:48,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:24:48,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:24:48,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:48,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:48,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:48,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:48,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:24:48,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:48,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 10:24:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:48,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:48,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:48,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:48,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:48,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:24:48,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:48,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:48,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:48,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:48,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:24:48,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:48,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 10:24:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:48,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:48,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:48,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:48,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:48,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:48,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:48,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:48,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:48,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:48,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:24:48,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:48,548 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 10:24:48,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144634799] [2020-10-14 10:24:48,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:24:48,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 10:24:48,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668146707] [2020-10-14 10:24:48,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 10:24:48,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:24:48,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 10:24:48,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 10:24:48,550 INFO L87 Difference]: Start difference. First operand 98 states and 118 transitions. Second operand 10 states. [2020-10-14 10:24:48,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:24:48,963 INFO L93 Difference]: Finished difference Result 113 states and 133 transitions. [2020-10-14 10:24:48,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 10:24:48,964 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 64 [2020-10-14 10:24:48,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:24:48,965 INFO L225 Difference]: With dead ends: 113 [2020-10-14 10:24:48,966 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 10:24:48,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-14 10:24:48,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 10:24:48,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 75. [2020-10-14 10:24:48,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 10:24:48,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2020-10-14 10:24:48,979 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 64 [2020-10-14 10:24:48,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:24:48,979 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2020-10-14 10:24:48,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 10:24:48,979 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2020-10-14 10:24:48,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 10:24:48,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:24:48,980 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 10:24:48,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 10:24:48,981 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:24:48,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:24:48,981 INFO L82 PathProgramCache]: Analyzing trace with hash -359858371, now seen corresponding path program 1 times [2020-10-14 10:24:48,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:24:48,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52919192] [2020-10-14 10:24:48,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:24:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:49,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:49,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:49,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:49,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:49,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:49,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:49,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:49,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:50,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:52,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:53,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:53,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:53,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 10:24:53,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 10:24:53,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 10:24:53,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:53,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 10:24:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 10:24:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 10:24:53,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:54,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:24:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:54,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:54,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:54,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:54,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:54,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:54,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:54,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:54,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:54,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:54,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:24:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:54,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:54,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:54,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:54,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:54,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:54,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:54,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:54,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:54,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:24:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:54,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:54,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:54,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 10:24:54,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:54,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:24:54,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:54,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:54,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:54,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:54,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:54,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:54,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 10:24:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:54,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:54,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:54,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:54,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:54,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:24:54,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:54,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:54,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:54,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:54,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:54,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:54,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 10:24:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:54,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:54,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:54,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:54,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:54,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:54,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:54,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:54,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:54,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:54,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:54,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:54,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 10:24:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:54,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:54,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:54,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:54,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:54,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:54,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:54,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:54,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:54,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:54,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:54,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:54,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 10:24:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:54,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:54,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:54,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:54,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:54,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:54,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:54,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 10:24:54,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:24:54,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 10:24:54,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:54,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:24:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 10:24:54,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:54,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 10:24:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:54,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:54,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:54,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:54,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:54,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:24:54,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:54,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:54,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:24:54,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 10:24:54,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:24:54,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:54,229 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 10:24:54,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52919192] [2020-10-14 10:24:54,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:24:54,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 10:24:54,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039018454] [2020-10-14 10:24:54,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 10:24:54,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:24:54,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 10:24:54,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 10:24:54,231 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand 11 states. [2020-10-14 10:24:54,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:24:54,652 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2020-10-14 10:24:54,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 10:24:54,653 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-10-14 10:24:54,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:24:54,654 INFO L225 Difference]: With dead ends: 95 [2020-10-14 10:24:54,655 INFO L226 Difference]: Without dead ends: 81 [2020-10-14 10:24:54,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-10-14 10:24:54,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-14 10:24:54,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2020-10-14 10:24:54,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-14 10:24:54,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2020-10-14 10:24:54,664 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 63 [2020-10-14 10:24:54,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:24:54,665 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2020-10-14 10:24:54,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 10:24:54,665 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2020-10-14 10:24:54,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 10:24:54,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:24:54,666 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 10:24:54,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 10:24:54,666 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:24:54,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:24:54,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1393657943, now seen corresponding path program 1 times [2020-10-14 10:24:54,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:24:54,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426034464] [2020-10-14 10:24:54,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:24:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:54,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:54,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:54,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:54,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:56,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:56,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:56,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:56,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:56,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:59,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:59,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 10:24:59,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 10:24:59,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 10:24:59,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:59,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 10:24:59,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 10:24:59,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 10:24:59,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:59,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:24:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:59,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:59,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:59,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:59,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:59,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:59,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:59,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:59,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:59,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:59,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:59,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:59,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:24:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:59,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:59,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:59,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:59,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:59,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:59,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:59,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:24:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:59,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:24:59,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:59,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:24:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:59,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:59,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:59,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 10:24:59,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:59,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 10:24:59,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:59,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:24:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:24:59,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:59,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 10:24:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:59,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:59,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:59,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:59,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:59,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:59,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:59,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:59,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:59,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:59,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:24:59,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:59,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 10:24:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:59,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:59,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:59,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:59,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:59,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:59,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:59,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:59,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:59,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:59,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:24:59,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:59,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 10:24:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:59,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:59,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:59,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:59,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:59,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:59,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:59,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:59,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:59,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:59,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:24:59,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:59,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 10:24:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:59,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:59,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:59,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:59,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 10:24:59,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:24:59,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 10:24:59,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:59,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:59,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 10:24:59,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:59,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 10:24:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:59,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:59,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:59,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:24:59,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:59,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 10:24:59,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:59,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 10:24:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 10:24:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:24:59,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 10:24:59,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426034464] [2020-10-14 10:24:59,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:24:59,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 10:24:59,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649881597] [2020-10-14 10:24:59,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 10:24:59,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:24:59,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 10:24:59,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-14 10:24:59,925 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand 15 states. [2020-10-14 10:25:00,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:25:00,755 INFO L93 Difference]: Finished difference Result 107 states and 127 transitions. [2020-10-14 10:25:00,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 10:25:00,756 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 66 [2020-10-14 10:25:00,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:25:00,757 INFO L225 Difference]: With dead ends: 107 [2020-10-14 10:25:00,757 INFO L226 Difference]: Without dead ends: 95 [2020-10-14 10:25:00,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=791, Unknown=0, NotChecked=0, Total=930 [2020-10-14 10:25:00,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-14 10:25:00,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 89. [2020-10-14 10:25:00,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 10:25:00,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions. [2020-10-14 10:25:00,771 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 66 [2020-10-14 10:25:00,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:25:00,771 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions. [2020-10-14 10:25:00,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 10:25:00,771 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions. [2020-10-14 10:25:00,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 10:25:00,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:25:00,772 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:25:00,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 10:25:00,773 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:25:00,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:25:00,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1289136633, now seen corresponding path program 1 times [2020-10-14 10:25:00,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:25:00,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027196732] [2020-10-14 10:25:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:25:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:00,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:00,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:00,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:00,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:00,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:00,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:01,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:01,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:01,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:05,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:05,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:05,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 10:25:05,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 10:25:05,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:25:05,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:05,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:05,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 10:25:05,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:25:05,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 10:25:05,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:05,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:25:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:05,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:05,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:05,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:05,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:05,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:05,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:05,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:05,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:05,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:05,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:05,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:05,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:25:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:05,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:05,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:05,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:05,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:25:05,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:25:05,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:25:05,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:05,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:05,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:25:05,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:05,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:25:05,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:05,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:25:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:05,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:05,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:05,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:25:05,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:05,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 10:25:05,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:05,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:05,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:25:05,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:05,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 10:25:05,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:05,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 10:25:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:05,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:05,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:05,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:25:05,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:05,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:25:05,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:05,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:05,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:25:05,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:05,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:25:05,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:25:05,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 10:25:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:05,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:05,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:05,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:05,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:05,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:05,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:05,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:05,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:25:05,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:05,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:25:05,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:05,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 10:25:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:05,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:05,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:05,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:05,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:05,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:05,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:05,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:05,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:25:05,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:05,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:25:05,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:05,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 10:25:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:05,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:05,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:05,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 10:25:05,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:05,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:25:05,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:05,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:25:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:05,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:05,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 10:25:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:05,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:05,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:05,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:25:05,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:05,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:25:05,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:05,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:25:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:05,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:05,999 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 10:25:05,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027196732] [2020-10-14 10:25:05,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:25:05,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-14 10:25:06,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214190950] [2020-10-14 10:25:06,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 10:25:06,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:25:06,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 10:25:06,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-14 10:25:06,001 INFO L87 Difference]: Start difference. First operand 89 states and 106 transitions. Second operand 13 states. [2020-10-14 10:25:06,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:25:06,612 INFO L93 Difference]: Finished difference Result 123 states and 143 transitions. [2020-10-14 10:25:06,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 10:25:06,612 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-10-14 10:25:06,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:25:06,613 INFO L225 Difference]: With dead ends: 123 [2020-10-14 10:25:06,613 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 10:25:06,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-10-14 10:25:06,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 10:25:06,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-10-14 10:25:06,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 10:25:06,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2020-10-14 10:25:06,622 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 67 [2020-10-14 10:25:06,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:25:06,622 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2020-10-14 10:25:06,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 10:25:06,622 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2020-10-14 10:25:06,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 10:25:06,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:25:06,623 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 10:25:06,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 10:25:06,623 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:25:06,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:25:06,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1828033708, now seen corresponding path program 1 times [2020-10-14 10:25:06,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:25:06,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981731585] [2020-10-14 10:25:06,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:25:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:06,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:06,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:06,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:06,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:08,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:09,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:09,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:10,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:11,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:11,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 10:25:11,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 10:25:11,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 10:25:11,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:11,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:11,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 10:25:11,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:25:11,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 10:25:11,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:11,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:25:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:11,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:11,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:11,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:11,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:11,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:11,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:11,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:11,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:11,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:11,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:11,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:11,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:25:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:11,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:11,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:11,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:11,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:25:11,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:25:11,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:25:11,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:11,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:11,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:25:11,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:11,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:25:11,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:25:11,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:25:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:11,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:11,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:11,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 10:25:11,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:11,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 10:25:11,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:11,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:11,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 10:25:11,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:11,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:25:11,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:11,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 10:25:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:11,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:11,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:11,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:25:11,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:11,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:25:11,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:11,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:11,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:25:11,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:11,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:25:11,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:11,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 10:25:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:11,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:11,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:11,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:11,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:11,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:25:11,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:11,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:11,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:25:11,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:11,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:25:11,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:11,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 10:25:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:11,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:11,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:11,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:11,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:11,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:11,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:11,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:25:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:25:11,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:12,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 10:25:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:12,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:12,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:12,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:12,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:12,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 10:25:12,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:25:12,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 10:25:12,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:12,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:12,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:25:12,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:12,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 10:25:12,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:12,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 10:25:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:12,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:12,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:12,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 10:25:12,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:12,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 10:25:12,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:12,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:12,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:25:12,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:12,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 10:25:12,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:12,236 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 10:25:12,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981731585] [2020-10-14 10:25:12,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:25:12,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 10:25:12,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558477844] [2020-10-14 10:25:12,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 10:25:12,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:25:12,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 10:25:12,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-14 10:25:12,239 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand 21 states. [2020-10-14 10:25:13,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:25:13,962 INFO L93 Difference]: Finished difference Result 113 states and 135 transitions. [2020-10-14 10:25:13,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 10:25:13,962 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 67 [2020-10-14 10:25:13,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:25:13,964 INFO L225 Difference]: With dead ends: 113 [2020-10-14 10:25:13,965 INFO L226 Difference]: Without dead ends: 111 [2020-10-14 10:25:13,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=195, Invalid=1697, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 10:25:13,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-14 10:25:13,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 101. [2020-10-14 10:25:13,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 10:25:13,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 121 transitions. [2020-10-14 10:25:13,981 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 121 transitions. Word has length 67 [2020-10-14 10:25:13,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:25:13,981 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 121 transitions. [2020-10-14 10:25:13,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 10:25:13,982 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 121 transitions. [2020-10-14 10:25:13,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 10:25:13,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:25:13,983 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 10:25:13,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 10:25:13,983 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:25:13,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:25:13,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1378740215, now seen corresponding path program 2 times [2020-10-14 10:25:13,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:25:13,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059426974] [2020-10-14 10:25:13,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:25:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:14,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:14,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:14,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:14,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:14,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:15,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:18,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:19,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 10:25:19,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:25:19,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 10:25:19,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:19,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:19,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 10:25:19,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 10:25:19,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 10:25:19,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:19,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:25:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:19,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:19,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:19,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:19,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:19,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:19,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:19,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:19,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:19,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:19,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:19,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:19,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:25:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:19,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:19,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:19,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:25:19,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:19,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:19,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:19,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:19,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:19,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:25:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:19,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:19,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:19,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 10:25:19,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:19,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:25:19,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:19,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:19,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:19,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:19,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:19,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:19,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 10:25:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:19,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:19,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:19,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:25:19,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:19,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:25:19,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:19,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:19,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:19,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:19,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:19,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:19,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 10:25:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:19,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:19,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:19,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:19,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:19,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:19,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:19,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:19,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:19,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:19,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:19,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:19,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 10:25:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:19,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:19,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:19,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:19,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:19,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:19,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:19,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:19,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:19,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 10:25:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:19,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:19,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:19,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:19,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:19,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 10:25:19,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:25:19,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 10:25:19,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:19,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:19,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:25:19,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:19,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 10:25:19,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:25:19,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 10:25:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:19,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:19,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:19,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 10:25:19,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:19,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 10:25:19,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:19,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:19,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:25:19,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 10:25:19,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 10:25:19,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:25:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 10:25:19,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059426974] [2020-10-14 10:25:19,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:25:19,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 10:25:19,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149907746] [2020-10-14 10:25:19,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 10:25:19,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:25:19,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 10:25:19,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-14 10:25:19,300 INFO L87 Difference]: Start difference. First operand 101 states and 121 transitions. Second operand 12 states. [2020-10-14 10:25:19,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:25:19,955 INFO L93 Difference]: Finished difference Result 137 states and 172 transitions. [2020-10-14 10:25:19,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 10:25:19,956 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-14 10:25:19,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:25:19,958 INFO L225 Difference]: With dead ends: 137 [2020-10-14 10:25:19,959 INFO L226 Difference]: Without dead ends: 125 [2020-10-14 10:25:19,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2020-10-14 10:25:19,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-14 10:25:19,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2020-10-14 10:25:19,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-14 10:25:19,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 151 transitions. [2020-10-14 10:25:19,998 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 151 transitions. Word has length 68 [2020-10-14 10:25:19,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:25:19,999 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 151 transitions. [2020-10-14 10:25:19,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 10:25:20,000 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 151 transitions. [2020-10-14 10:25:20,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 10:25:20,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:25:20,004 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 10:25:20,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 10:25:20,004 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:25:20,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:25:20,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1055092436, now seen corresponding path program 3 times [2020-10-14 10:25:20,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:25:20,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651251805] [2020-10-14 10:25:20,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:25:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:20,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:20,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:20,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:20,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:20,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:20,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:20,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:22,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:22,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:22,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:22,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:23,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:25,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:25,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 10:25:25,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 10:25:25,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 10:25:25,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:25,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:25,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 10:25:25,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 10:25:25,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 10:25:25,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:25,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:25:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:25,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:25,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:25,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:25,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:25,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:25,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:25,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:25,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:25,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:25,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:25,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:25,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:25:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:25,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:25,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:25,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:25:25,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:25,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:25:25,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:25,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:25,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:25:25,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:25,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:25:25,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:25,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:25:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:25,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:25,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:25,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:25:25,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:25,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 10:25:25,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:25,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:25,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:25:25,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:25,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 10:25:25,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:25,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 10:25:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:25,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:25,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:25,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:25:25,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:25,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:25,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:25,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:25:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:25:25,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:25:25,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 10:25:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:25,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:25,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:25,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:25,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:25,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:25:25,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:25,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:25:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:25,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:25:25,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:25:25,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 10:25:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:25,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:25,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:25,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:25,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:25,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:25:25,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:25,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:25,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:25:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:25:25,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:25:25,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 10:25:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:25,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:25,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:25,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:25,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 10:25:25,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:25:25,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 10:25:25,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:25,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:25,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:25:25,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 10:25:25,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 10:25:25,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:25:25,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 10:25:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:25,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:25,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:25,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 10:25:25,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:25,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:25:25,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:25,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:25,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:25,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 10:25:25,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:25,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 10:25:25,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651251805] [2020-10-14 10:25:25,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:25:25,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 10:25:25,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380019903] [2020-10-14 10:25:25,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 10:25:25,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:25:25,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 10:25:25,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-14 10:25:25,452 INFO L87 Difference]: Start difference. First operand 119 states and 151 transitions. Second operand 15 states. [2020-10-14 10:25:28,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:25:28,545 INFO L93 Difference]: Finished difference Result 181 states and 237 transitions. [2020-10-14 10:25:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 10:25:28,546 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 68 [2020-10-14 10:25:28,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:25:28,548 INFO L225 Difference]: With dead ends: 181 [2020-10-14 10:25:28,548 INFO L226 Difference]: Without dead ends: 140 [2020-10-14 10:25:28,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=960, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 10:25:28,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-14 10:25:28,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 128. [2020-10-14 10:25:28,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-14 10:25:28,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 164 transitions. [2020-10-14 10:25:28,567 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 164 transitions. Word has length 68 [2020-10-14 10:25:28,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:25:28,567 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 164 transitions. [2020-10-14 10:25:28,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 10:25:28,567 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 164 transitions. [2020-10-14 10:25:28,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 10:25:28,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:25:28,569 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 10:25:28,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 10:25:28,571 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:25:28,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:25:28,572 INFO L82 PathProgramCache]: Analyzing trace with hash 992983337, now seen corresponding path program 4 times [2020-10-14 10:25:28,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:25:28,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119784578] [2020-10-14 10:25:28,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:25:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:28,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:28,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:28,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:28,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:28,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:28,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:29,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:31,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:31,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:31,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:31,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:32,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:32,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:32,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:32,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:32,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:32,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:33,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:33,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 10:25:33,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 10:25:33,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:25:33,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:33,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:33,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:25:33,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-14 10:25:33,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:25:33,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:33,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:25:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:33,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:33,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:33,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:33,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:33,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:33,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:33,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:33,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:33,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:33,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:33,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:33,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:25:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:33,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:33,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:33,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:25:33,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:33,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:25:33,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:33,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:33,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:33,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:33,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:33,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:25:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:33,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:33,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:33,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:25:33,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:33,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:25:33,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:33,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:33,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:33,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:33,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:33,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 10:25:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:33,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:33,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:33,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:25:33,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:33,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:25:33,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:33,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:33,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:33,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:33,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:33,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:33,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 10:25:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:33,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:33,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:33,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:33,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:33,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:33,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:33,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:33,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:33,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:33,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:33,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:33,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 10:25:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:33,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:33,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:33,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:33,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:33,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:25:33,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:33,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:33,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:33,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:33,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:33,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:33,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 10:25:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:33,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:33,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:33,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 10:25:33,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:33,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 10:25:33,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:33,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:33,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:25:33,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 10:25:33,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:25:33,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:33,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 10:25:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:33,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:33,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:33,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 10:25:33,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:33,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:25:33,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:33,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:33,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 10:25:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:33,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:33,706 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 10:25:33,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119784578] [2020-10-14 10:25:33,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:25:33,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 10:25:33,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773821110] [2020-10-14 10:25:33,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 10:25:33,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:25:33,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 10:25:33,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:25:33,708 INFO L87 Difference]: Start difference. First operand 128 states and 164 transitions. Second operand 8 states. [2020-10-14 10:25:34,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:25:34,073 INFO L93 Difference]: Finished difference Result 193 states and 253 transitions. [2020-10-14 10:25:34,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 10:25:34,077 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-14 10:25:34,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:25:34,079 INFO L225 Difference]: With dead ends: 193 [2020-10-14 10:25:34,079 INFO L226 Difference]: Without dead ends: 134 [2020-10-14 10:25:34,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-14 10:25:34,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-14 10:25:34,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-10-14 10:25:34,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 10:25:34,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 172 transitions. [2020-10-14 10:25:34,119 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 172 transitions. Word has length 69 [2020-10-14 10:25:34,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:25:34,120 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 172 transitions. [2020-10-14 10:25:34,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 10:25:34,120 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 172 transitions. [2020-10-14 10:25:34,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 10:25:34,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:25:34,124 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-14 10:25:34,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 10:25:34,124 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:25:34,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:25:34,124 INFO L82 PathProgramCache]: Analyzing trace with hash -148327577, now seen corresponding path program 5 times [2020-10-14 10:25:34,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:25:34,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17333158] [2020-10-14 10:25:34,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:25:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:34,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:34,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:34,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:34,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:34,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:35,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:38,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:38,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:39,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:39,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:39,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 10:25:39,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 10:25:39,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 10:25:39,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:39,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:39,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 10:25:39,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 10:25:39,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:25:39,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:39,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:25:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:39,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:39,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:39,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:39,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:39,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:39,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:39,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:39,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:39,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:39,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:39,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:39,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:25:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:39,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:39,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:39,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:25:39,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:39,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:25:39,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:39,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:39,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:39,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:39,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:39,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:39,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:25:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:39,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:39,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:39,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 10:25:39,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:39,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 10:25:39,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:39,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:25:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:25:39,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:39,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 10:25:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:39,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:39,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:39,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:25:39,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:39,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:39,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:39,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:39,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:25:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:25:39,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:39,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 10:25:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:39,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:39,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:39,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:39,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:39,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:25:39,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:39,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:39,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:25:39,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:39,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:25:39,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:39,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 10:25:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:39,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:39,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:39,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:39,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:39,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:39,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:39,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:39,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:25:39,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:39,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:25:39,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:39,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 10:25:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:39,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:39,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:39,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 10:25:39,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:39,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:25:39,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:39,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:39,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:39,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:25:39,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:39,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:39,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 10:25:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:39,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:39,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:39,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 10:25:39,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:39,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:25:39,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:39,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:39,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:39,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:25:39,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:39,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 10:25:39,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17333158] [2020-10-14 10:25:39,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:25:39,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 10:25:39,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010336954] [2020-10-14 10:25:39,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 10:25:39,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:25:39,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 10:25:39,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-14 10:25:39,324 INFO L87 Difference]: Start difference. First operand 134 states and 172 transitions. Second operand 11 states. [2020-10-14 10:25:39,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:25:39,905 INFO L93 Difference]: Finished difference Result 213 states and 273 transitions. [2020-10-14 10:25:39,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 10:25:39,905 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-14 10:25:39,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:25:39,907 INFO L225 Difference]: With dead ends: 213 [2020-10-14 10:25:39,907 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 10:25:39,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2020-10-14 10:25:39,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 10:25:39,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-10-14 10:25:39,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-14 10:25:39,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 176 transitions. [2020-10-14 10:25:39,938 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 176 transitions. Word has length 70 [2020-10-14 10:25:39,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:25:39,938 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 176 transitions. [2020-10-14 10:25:39,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 10:25:39,938 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 176 transitions. [2020-10-14 10:25:39,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 10:25:39,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:25:39,940 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:25:39,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 10:25:39,940 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:25:39,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:25:39,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1255679333, now seen corresponding path program 6 times [2020-10-14 10:25:39,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:25:39,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630958304] [2020-10-14 10:25:39,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:25:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:39,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:40,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:40,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:40,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:40,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:40,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:40,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:40,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:40,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:41,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:41,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:42,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:44,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:44,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 10:25:44,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 10:25:44,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 10:25:44,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:44,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:44,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:25:44,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 10:25:44,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:25:44,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:44,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:25:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:44,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:44,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:44,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:44,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:44,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:44,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:44,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:44,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:44,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:44,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:25:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:44,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:44,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:44,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:25:44,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:44,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:25:44,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:44,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:44,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:44,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:44,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:44,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:44,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:25:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:44,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:44,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:44,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 10:25:44,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:44,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:25:44,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:44,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:44,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:44,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:44,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:44,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:45,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 10:25:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:45,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:45,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:45,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:25:45,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:45,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:25:45,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:45,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:45,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:45,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:45,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:45,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:45,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 10:25:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:45,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:45,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:45,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:45,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:45,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:45,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:45,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:45,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:45,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:45,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:45,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:25:45,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 10:25:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:45,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:45,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:45,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:45,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:45,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:25:45,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:45,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:45,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:45,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:45,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:45,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:45,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 10:25:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:45,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:45,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:45,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 10:25:45,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:45,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:25:45,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:45,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:45,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:45,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:45,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:45,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:25:45,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 10:25:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:45,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:45,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:45,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 10:25:45,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:45,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 10:25:45,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:45,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:45,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:25:45,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 10:25:45,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:25:45,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:45,097 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 10:25:45,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630958304] [2020-10-14 10:25:45,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:25:45,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 10:25:45,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952465969] [2020-10-14 10:25:45,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 10:25:45,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:25:45,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 10:25:45,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 10:25:45,099 INFO L87 Difference]: Start difference. First operand 138 states and 176 transitions. Second operand 9 states. [2020-10-14 10:25:45,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:25:45,619 INFO L93 Difference]: Finished difference Result 161 states and 207 transitions. [2020-10-14 10:25:45,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 10:25:45,619 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-14 10:25:45,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:25:45,621 INFO L225 Difference]: With dead ends: 161 [2020-10-14 10:25:45,621 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 10:25:45,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-10-14 10:25:45,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 10:25:45,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2020-10-14 10:25:45,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 10:25:45,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 160 transitions. [2020-10-14 10:25:45,649 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 160 transitions. Word has length 71 [2020-10-14 10:25:45,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:25:45,650 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 160 transitions. [2020-10-14 10:25:45,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 10:25:45,650 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 160 transitions. [2020-10-14 10:25:45,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 10:25:45,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:25:45,652 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-14 10:25:45,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 10:25:45,653 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:25:45,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:25:45,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1162211141, now seen corresponding path program 7 times [2020-10-14 10:25:45,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:25:45,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160460554] [2020-10-14 10:25:45,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:25:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:45,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:45,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:45,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:45,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:45,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:46,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:50,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:50,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 10:25:50,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:25:50,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:25:50,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:50,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:50,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 10:25:50,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-14 10:25:50,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 10:25:50,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:50,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:25:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:50,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:50,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:50,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:50,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:50,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:50,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:50,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:50,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:50,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:50,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:50,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:50,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:25:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:50,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:50,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:50,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:25:50,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:50,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:25:50,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:50,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:50,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:50,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:50,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:50,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:50,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:25:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:50,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:50,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:50,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 10:25:50,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:50,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:25:50,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:50,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:50,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:50,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:50,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:50,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:50,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 10:25:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:50,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:50,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:50,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:25:50,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:50,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:25:50,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:50,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:50,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:50,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:50,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 10:25:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:50,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:50,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:50,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:50,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:50,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:50,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:50,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:50,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:50,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 10:25:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:50,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:50,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:50,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:50,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:50,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:25:50,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:50,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:50,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:50,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 10:25:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:50,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:50,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:50,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:50,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 10:25:50,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:25:50,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 10:25:50,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:50,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:25:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:25:50,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:25:50,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 10:25:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:50,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:50,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:50,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 10:25:50,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:50,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 10:25:50,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:50,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:50,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:25:50,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 10:25:50,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 10:25:50,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:50,895 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 10:25:50,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160460554] [2020-10-14 10:25:50,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:25:50,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 10:25:50,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971529229] [2020-10-14 10:25:50,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 10:25:50,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:25:50,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 10:25:50,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 10:25:50,898 INFO L87 Difference]: Start difference. First operand 129 states and 160 transitions. Second operand 13 states. [2020-10-14 10:25:51,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:25:51,658 INFO L93 Difference]: Finished difference Result 159 states and 198 transitions. [2020-10-14 10:25:51,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 10:25:51,659 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2020-10-14 10:25:51,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:25:51,661 INFO L225 Difference]: With dead ends: 159 [2020-10-14 10:25:51,661 INFO L226 Difference]: Without dead ends: 147 [2020-10-14 10:25:51,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=674, Unknown=0, NotChecked=0, Total=812 [2020-10-14 10:25:51,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-14 10:25:51,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 129. [2020-10-14 10:25:51,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 10:25:51,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 160 transitions. [2020-10-14 10:25:51,678 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 160 transitions. Word has length 72 [2020-10-14 10:25:51,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:25:51,679 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 160 transitions. [2020-10-14 10:25:51,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 10:25:51,679 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 160 transitions. [2020-10-14 10:25:51,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 10:25:51,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:25:51,680 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:25:51,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 10:25:51,681 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:25:51,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:25:51,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1681227814, now seen corresponding path program 8 times [2020-10-14 10:25:51,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:25:51,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327578159] [2020-10-14 10:25:51,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:25:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:51,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:51,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:51,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:51,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:51,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:51,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:52,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:52,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:52,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:52,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:56,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:56,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:56,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 10:25:56,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 10:25:56,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 10:25:56,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:56,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 10:25:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 10:25:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 10:25:56,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:56,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:25:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:56,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:56,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:56,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:56,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:56,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:56,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:56,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:56,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:56,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:56,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:56,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:56,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:25:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:56,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:56,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:56,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:25:56,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:56,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:25:56,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:56,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:25:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:56,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:25:56,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:56,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:25:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:56,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:56,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:56,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:25:56,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:56,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 10:25:56,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:56,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:56,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:25:56,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:56,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 10:25:56,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:58,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 10:25:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:58,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:58,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:58,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:25:58,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:58,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:58,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:58,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:58,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:25:58,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:58,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:25:58,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:58,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 10:25:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:58,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:58,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:58,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:58,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:58,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:25:58,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:58,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:58,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:25:58,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:58,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:25:58,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:58,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 10:25:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:58,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:58,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:58,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:25:58,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:58,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:25:58,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:58,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:58,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:25:58,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:25:58,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:25:58,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:58,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 10:25:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:58,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:58,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:58,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 10:25:58,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:58,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:25:58,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:58,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 10:25:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:58,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:58,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 10:25:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:58,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:25:58,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:25:58,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 10:25:58,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:25:58,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:25:58,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:25:58,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:25:58,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:25:58,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 10:25:58,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:25:58,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:25:58,649 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 10:25:58,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327578159] [2020-10-14 10:25:58,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:25:58,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 10:25:58,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921090762] [2020-10-14 10:25:58,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 10:25:58,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:25:58,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 10:25:58,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-14 10:25:58,650 INFO L87 Difference]: Start difference. First operand 129 states and 160 transitions. Second operand 14 states. [2020-10-14 10:25:59,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:25:59,465 INFO L93 Difference]: Finished difference Result 183 states and 222 transitions. [2020-10-14 10:25:59,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 10:25:59,466 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 73 [2020-10-14 10:25:59,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:25:59,467 INFO L225 Difference]: With dead ends: 183 [2020-10-14 10:25:59,468 INFO L226 Difference]: Without dead ends: 128 [2020-10-14 10:25:59,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2020-10-14 10:25:59,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-14 10:25:59,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2020-10-14 10:25:59,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-14 10:25:59,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 154 transitions. [2020-10-14 10:25:59,485 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 154 transitions. Word has length 73 [2020-10-14 10:25:59,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:25:59,486 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 154 transitions. [2020-10-14 10:25:59,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 10:25:59,486 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 154 transitions. [2020-10-14 10:25:59,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 10:25:59,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:25:59,487 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 10:25:59,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 10:25:59,488 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:25:59,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:25:59,488 INFO L82 PathProgramCache]: Analyzing trace with hash -428586079, now seen corresponding path program 1 times [2020-10-14 10:25:59,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:25:59,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330929937] [2020-10-14 10:25:59,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:25:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:25:59,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:26:00,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:26:00,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:26:00,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:26:01,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:26:04,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:26:04,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 10:26:04,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:26:04,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 10:26:04,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:26:04,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:26:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 10:26:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 10:26:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 10:26:04,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:26:31,251 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 234 DAG size of output: 13