/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/prefixsum_iter.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 05:00:16,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 05:00:16,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 05:00:16,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 05:00:16,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 05:00:16,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 05:00:16,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 05:00:16,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 05:00:16,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 05:00:16,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 05:00:16,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 05:00:16,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 05:00:16,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 05:00:16,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 05:00:16,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 05:00:16,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 05:00:16,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 05:00:16,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 05:00:16,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 05:00:16,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 05:00:16,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 05:00:16,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 05:00:16,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 05:00:16,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 05:00:16,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 05:00:16,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 05:00:16,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 05:00:16,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 05:00:16,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 05:00:16,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 05:00:16,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 05:00:16,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 05:00:16,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 05:00:16,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 05:00:16,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 05:00:16,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 05:00:16,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 05:00:16,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 05:00:16,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 05:00:16,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 05:00:16,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 05:00:16,324 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 [2020-10-15 05:00:16,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 05:00:16,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 05:00:16,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 05:00:16,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 05:00:16,351 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 05:00:16,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 05:00:16,351 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 05:00:16,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 05:00:16,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 05:00:16,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 05:00:16,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 05:00:16,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 05:00:16,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 05:00:16,353 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 05:00:16,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 05:00:16,353 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 05:00:16,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 05:00:16,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 05:00:16,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 05:00:16,354 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 05:00:16,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 05:00:16,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 05:00:16,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 05:00:16,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 05:00:16,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 05:00:16,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 05:00:16,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 05:00:16,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 05:00:16,355 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 05:00:16,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 05:00:16,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 05:00:16,691 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 05:00:16,695 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 05:00:16,696 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 05:00:16,697 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 05:00:16,698 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/prefixsum_iter.c [2020-10-15 05:00:16,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/685c730a4/d8f315884a1145e68a8077babc1b745f/FLAG91adfbe51 [2020-10-15 05:00:17,189 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 05:00:17,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/prefixsum_iter.c [2020-10-15 05:00:17,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/685c730a4/d8f315884a1145e68a8077babc1b745f/FLAG91adfbe51 [2020-10-15 05:00:17,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/685c730a4/d8f315884a1145e68a8077babc1b745f [2020-10-15 05:00:17,557 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 05:00:17,559 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 05:00:17,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 05:00:17,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 05:00:17,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 05:00:17,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:00:17" (1/1) ... [2020-10-15 05:00:17,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@623e806a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:17, skipping insertion in model container [2020-10-15 05:00:17,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:00:17" (1/1) ... [2020-10-15 05:00:17,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 05:00:17,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 05:00:17,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 05:00:17,806 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 05:00:17,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 05:00:17,975 INFO L208 MainTranslator]: Completed translation [2020-10-15 05:00:17,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:17 WrapperNode [2020-10-15 05:00:17,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 05:00:17,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 05:00:17,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 05:00:17,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 05:00:17,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:17" (1/1) ... [2020-10-15 05:00:17,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:17" (1/1) ... [2020-10-15 05:00:17,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:17" (1/1) ... [2020-10-15 05:00:17,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:17" (1/1) ... [2020-10-15 05:00:18,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:17" (1/1) ... [2020-10-15 05:00:18,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:17" (1/1) ... [2020-10-15 05:00:18,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:17" (1/1) ... [2020-10-15 05:00:18,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 05:00:18,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 05:00:18,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 05:00:18,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 05:00:18,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:17" (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 [2020-10-15 05:00:18,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 05:00:18,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 05:00:18,087 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 05:00:18,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-15 05:00:18,087 INFO L138 BoogieDeclarations]: Found implementation of procedure upsweep [2020-10-15 05:00:18,087 INFO L138 BoogieDeclarations]: Found implementation of procedure downsweep [2020-10-15 05:00:18,087 INFO L138 BoogieDeclarations]: Found implementation of procedure is_pow2 [2020-10-15 05:00:18,087 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-15 05:00:18,087 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 05:00:18,088 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-15 05:00:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-15 05:00:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-15 05:00:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 05:00:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 05:00:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 05:00:18,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 05:00:18,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-15 05:00:18,089 INFO L130 BoogieDeclarations]: Found specification of procedure upsweep [2020-10-15 05:00:18,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 05:00:18,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 05:00:18,089 INFO L130 BoogieDeclarations]: Found specification of procedure downsweep [2020-10-15 05:00:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure is_pow2 [2020-10-15 05:00:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 05:00:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 05:00:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-15 05:00:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-15 05:00:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 05:00:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 05:00:18,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 05:00:18,529 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 05:00:18,530 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-15 05:00:18,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:00:18 BoogieIcfgContainer [2020-10-15 05:00:18,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 05:00:18,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 05:00:18,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 05:00:18,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 05:00:18,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:00:17" (1/3) ... [2020-10-15 05:00:18,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92ced13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:00:18, skipping insertion in model container [2020-10-15 05:00:18,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:17" (2/3) ... [2020-10-15 05:00:18,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92ced13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:00:18, skipping insertion in model container [2020-10-15 05:00:18,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:00:18" (3/3) ... [2020-10-15 05:00:18,543 INFO L109 eAbstractionObserver]: Analyzing ICFG prefixsum_iter.c [2020-10-15 05:00:18,554 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 05:00:18,563 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 05:00:18,576 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 05:00:18,598 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 05:00:18,598 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 05:00:18,598 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 05:00:18,598 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 05:00:18,598 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 05:00:18,598 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 05:00:18,599 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 05:00:18,599 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 05:00:18,616 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-10-15 05:00:18,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 05:00:18,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:00:18,625 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] [2020-10-15 05:00:18,626 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:00:18,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:00:18,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1341293260, now seen corresponding path program 1 times [2020-10-15 05:00:18,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:00:18,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783573141] [2020-10-15 05:00:18,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:00:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:18,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:18,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:19,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:19,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:19,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:23,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:23,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 05:00:23,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 05:00:23,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4452 [2020-10-15 05:00:23,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:23,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:23,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 05:00:23,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-15 05:00:23,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 05:00:23,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 05:00:23,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:00:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:23,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:23,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:23,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:23,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:23,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 05:00:23,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:23,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:23,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:23,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:23,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:23,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 05:00:23,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 05:00:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:23,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:23,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:23,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:23,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:23,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 05:00:23,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:00:23,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:23,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:23,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:23,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:23,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:23,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 05:00:23,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:00:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:23,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:23,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:23,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 05:00:23,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:23,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 05:00:23,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:23,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:23,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:23,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 05:00:23,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 05:00:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:23,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:23,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:23,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:23,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:23,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 05:00:23,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 05:00:23,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:23,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:23,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 05:00:23,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:23,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 05:00:23,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 05:00:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:23,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:23,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:23,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:23,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:23,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 05:00:23,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:23,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:23,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 05:00:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:23,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:23,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-15 05:00:23,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 05:00:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:23,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:23,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:23,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:23,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:23,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 05:00:23,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:23,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 05:00:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 05:00:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 05:00:23,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:23,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 05:00:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:23,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:23,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:23,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 05:00:23,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:23,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 05:00:23,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:23,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:23,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 05:00:23,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 05:00:23,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 05:00:23,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:23,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-15 05:00:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:23,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:23,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:23,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:23,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:23,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 05:00:23,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:23,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:23,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 05:00:23,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 05:00:23,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 05:00:23,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:23,936 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 05:00:23,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783573141] [2020-10-15 05:00:23,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 05:00:23,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 05:00:23,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39009235] [2020-10-15 05:00:23,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 05:00:23,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:00:23,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 05:00:23,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-15 05:00:23,963 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 14 states. [2020-10-15 05:00:25,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:00:25,048 INFO L93 Difference]: Finished difference Result 160 states and 224 transitions. [2020-10-15 05:00:25,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 05:00:25,050 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-15 05:00:25,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:00:25,062 INFO L225 Difference]: With dead ends: 160 [2020-10-15 05:00:25,062 INFO L226 Difference]: Without dead ends: 89 [2020-10-15 05:00:25,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2020-10-15 05:00:25,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-15 05:00:25,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2020-10-15 05:00:25,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-15 05:00:25,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2020-10-15 05:00:25,144 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 54 [2020-10-15 05:00:25,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:00:25,145 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2020-10-15 05:00:25,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 05:00:25,145 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2020-10-15 05:00:25,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 05:00:25,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:00:25,152 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] [2020-10-15 05:00:25,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 05:00:25,153 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:00:25,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:00:25,154 INFO L82 PathProgramCache]: Analyzing trace with hash 2075737655, now seen corresponding path program 1 times [2020-10-15 05:00:25,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:00:25,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583390102] [2020-10-15 05:00:25,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:00:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:25,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:25,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:25,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:25,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:25,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:26,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:26,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:28,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:28,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:30,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:30,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 05:00:30,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 05:00:30,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 05:00:30,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:30,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:30,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 05:00:30,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 05:00:30,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 05:00:30,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:30,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:00:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:30,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:30,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:30,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:30,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:30,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:00:30,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:30,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:30,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:30,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:30,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:30,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 05:00:30,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 05:00:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:30,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:30,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:30,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:30,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:30,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 05:00:30,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 05:00:30,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:30,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:30,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:30,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:00:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:30,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:30,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:30,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 05:00:30,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:30,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-15 05:00:30,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:30,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 05:00:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 05:00:30,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:30,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 05:00:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:30,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:30,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:30,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:30,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:30,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 05:00:30,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:30,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:30,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 05:00:30,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:30,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 05:00:30,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:30,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 05:00:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:30,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:30,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:30,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:30,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:30,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 05:00:30,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:30,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:30,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:00:30,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:30,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 05:00:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:30,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:30,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:30,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:30,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:30,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:00:30,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:30,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:30,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:30,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:30,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:00:30,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:30,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 05:00:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:30,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:30,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:30,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:30,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 05:00:30,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 05:00:30,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 05:00:30,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:30,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:30,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:30,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:30,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 05:00:30,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:30,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-15 05:00:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:30,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:30,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:30,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 05:00:30,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:30,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 05:00:30,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:30,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:30,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 05:00:30,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 05:00:30,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 05:00:30,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 05:00:30,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583390102] [2020-10-15 05:00:30,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 05:00:30,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 05:00:30,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596708538] [2020-10-15 05:00:30,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 05:00:30,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:00:30,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 05:00:30,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-15 05:00:30,700 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand 14 states. [2020-10-15 05:00:31,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:00:31,819 INFO L93 Difference]: Finished difference Result 120 states and 153 transitions. [2020-10-15 05:00:31,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 05:00:31,819 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-10-15 05:00:31,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:00:31,822 INFO L225 Difference]: With dead ends: 120 [2020-10-15 05:00:31,822 INFO L226 Difference]: Without dead ends: 108 [2020-10-15 05:00:31,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2020-10-15 05:00:31,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-15 05:00:31,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 99. [2020-10-15 05:00:31,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-15 05:00:31,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 124 transitions. [2020-10-15 05:00:31,851 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 124 transitions. Word has length 58 [2020-10-15 05:00:31,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:00:31,852 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 124 transitions. [2020-10-15 05:00:31,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 05:00:31,852 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 124 transitions. [2020-10-15 05:00:31,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 05:00:31,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:00:31,860 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-15 05:00:31,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 05:00:31,861 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:00:31,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:00:31,861 INFO L82 PathProgramCache]: Analyzing trace with hash -2017966338, now seen corresponding path program 1 times [2020-10-15 05:00:31,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:00:31,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255260617] [2020-10-15 05:00:31,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:00:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:31,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:31,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:31,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:32,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:32,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:32,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:32,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:35,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:36,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:36,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:36,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:36,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:36,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 05:00:36,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 05:00:36,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 05:00:36,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:36,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:36,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 05:00:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 05:00:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 05:00:36,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:36,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:00:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:36,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:36,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:36,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:36,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:36,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:00:36,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:36,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:36,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:36,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:36,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:36,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:36,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 05:00:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:36,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:36,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:36,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:36,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:36,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 05:00:36,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:36,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:36,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:36,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:36,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:36,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 05:00:36,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:00:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:36,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:37,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:37,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 05:00:37,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:37,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 05:00:37,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:37,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:37,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 05:00:37,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:37,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 05:00:37,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:37,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 05:00:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:37,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:37,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:37,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:37,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:37,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:00:37,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:37,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:37,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:37,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:37,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:37,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:37,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 05:00:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:37,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:37,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:37,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:37,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:37,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 05:00:37,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:37,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:37,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:37,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:37,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:00:37,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:37,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 05:00:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:37,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:37,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:37,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:37,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:37,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:00:37,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:37,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:37,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:37,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:37,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:00:37,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:37,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 05:00:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:37,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:37,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:37,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:37,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 05:00:37,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 05:00:37,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-15 05:00:37,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:37,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 05:00:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 05:00:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 05:00:37,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:37,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-15 05:00:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:37,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:37,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:37,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:37,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:37,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 05:00:37,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:37,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:37,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:37,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 05:00:37,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:37,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:37,302 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 05:00:37,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255260617] [2020-10-15 05:00:37,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 05:00:37,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 05:00:37,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459949425] [2020-10-15 05:00:37,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 05:00:37,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:00:37,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 05:00:37,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-15 05:00:37,305 INFO L87 Difference]: Start difference. First operand 99 states and 124 transitions. Second operand 11 states. [2020-10-15 05:00:38,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:00:38,159 INFO L93 Difference]: Finished difference Result 167 states and 211 transitions. [2020-10-15 05:00:38,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 05:00:38,159 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-10-15 05:00:38,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:00:38,162 INFO L225 Difference]: With dead ends: 167 [2020-10-15 05:00:38,162 INFO L226 Difference]: Without dead ends: 132 [2020-10-15 05:00:38,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2020-10-15 05:00:38,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-15 05:00:38,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 115. [2020-10-15 05:00:38,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-15 05:00:38,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 147 transitions. [2020-10-15 05:00:38,181 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 147 transitions. Word has length 59 [2020-10-15 05:00:38,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:00:38,182 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 147 transitions. [2020-10-15 05:00:38,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 05:00:38,182 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 147 transitions. [2020-10-15 05:00:38,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 05:00:38,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:00:38,184 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] [2020-10-15 05:00:38,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 05:00:38,184 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:00:38,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:00:38,185 INFO L82 PathProgramCache]: Analyzing trace with hash -85184073, now seen corresponding path program 1 times [2020-10-15 05:00:38,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:00:38,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884615760] [2020-10-15 05:00:38,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:00:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:38,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:38,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:38,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:38,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:39,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:40,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:40,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:42,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 05:00:43,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 05:00:43,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 05:00:43,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 05:00:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 05:00:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 05:00:43,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:43,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:00:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:43,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:43,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:43,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:00:43,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:43,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:43,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:43,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:43,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 05:00:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:43,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:43,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:43,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:00:43,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 05:00:43,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:43,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 05:00:43,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:43,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:00:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:43,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 05:00:43,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:43,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-15 05:00:43,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 05:00:43,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:43,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 05:00:43,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:43,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 05:00:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:43,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:43,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:43,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:00:43,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:43,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:43,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:43,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:43,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 05:00:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:43,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:43,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:43,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:00:43,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:43,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:43,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:00:43,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:43,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 05:00:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:43,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:43,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:43,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:00:43,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:43,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:43,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:00:43,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:43,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-15 05:00:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:43,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 05:00:43,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:43,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:00:43,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:43,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 05:00:43,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:43,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:43,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-15 05:00:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:43,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 05:00:43,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:43,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 05:00:43,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:43,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 05:00:43,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:43,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 05:00:43,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884615760] [2020-10-15 05:00:43,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 05:00:43,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 05:00:43,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182638567] [2020-10-15 05:00:43,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 05:00:43,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:00:43,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 05:00:43,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-15 05:00:43,445 INFO L87 Difference]: Start difference. First operand 115 states and 147 transitions. Second operand 11 states. [2020-10-15 05:00:44,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:00:44,087 INFO L93 Difference]: Finished difference Result 193 states and 246 transitions. [2020-10-15 05:00:44,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 05:00:44,088 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-10-15 05:00:44,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:00:44,094 INFO L225 Difference]: With dead ends: 193 [2020-10-15 05:00:44,094 INFO L226 Difference]: Without dead ends: 125 [2020-10-15 05:00:44,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2020-10-15 05:00:44,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-15 05:00:44,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 116. [2020-10-15 05:00:44,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-15 05:00:44,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 148 transitions. [2020-10-15 05:00:44,132 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 148 transitions. Word has length 59 [2020-10-15 05:00:44,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:00:44,133 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 148 transitions. [2020-10-15 05:00:44,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 05:00:44,133 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 148 transitions. [2020-10-15 05:00:44,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 05:00:44,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:00:44,135 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] [2020-10-15 05:00:44,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 05:00:44,135 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:00:44,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:00:44,135 INFO L82 PathProgramCache]: Analyzing trace with hash 2016575805, now seen corresponding path program 1 times [2020-10-15 05:00:44,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:00:44,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948809828] [2020-10-15 05:00:44,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:00:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:44,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:44,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:44,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:44,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:44,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:45,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:45,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:45,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:49,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:49,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 05:00:49,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 05:00:49,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 05:00:49,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:49,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:49,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 05:00:49,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 05:00:49,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 05:00:49,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:49,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:00:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:49,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:49,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:49,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:49,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:49,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:00:49,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:49,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:49,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:49,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:49,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 05:00:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:49,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:49,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:49,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:49,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:49,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 05:00:49,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:00:49,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:49,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:49,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:49,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:00:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:49,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:49,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:49,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 05:00:49,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:49,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 05:00:49,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:49,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:49,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 05:00:49,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:49,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 05:00:49,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:49,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 05:00:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:49,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:49,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:49,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:49,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:49,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:00:49,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:49,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:49,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 05:00:49,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:49,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 05:00:49,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:49,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 05:00:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:49,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:49,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:49,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:49,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:49,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:00:49,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:49,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:49,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:49,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:49,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:00:49,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:49,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 05:00:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:49,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:49,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:49,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:49,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:49,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:00:49,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:49,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:00:49,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:49,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 05:00:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:49,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:49,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:49,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:49,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 05:00:49,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 05:00:49,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 05:00:49,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:49,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:49,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:49,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:49,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 05:00:49,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:49,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-15 05:00:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:49,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:49,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:49,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:49,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:49,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:00:49,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:49,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:49,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:49,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:49,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:49,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:00:49,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 05:00:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:49,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:49,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:49,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:49,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:49,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:00:49,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:49,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:49,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:49,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:49,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:49,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 05:00:49,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948809828] [2020-10-15 05:00:49,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 05:00:49,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 05:00:49,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469395664] [2020-10-15 05:00:49,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 05:00:49,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:00:49,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 05:00:49,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-15 05:00:49,448 INFO L87 Difference]: Start difference. First operand 116 states and 148 transitions. Second operand 14 states. [2020-10-15 05:00:50,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:00:50,245 INFO L93 Difference]: Finished difference Result 143 states and 178 transitions. [2020-10-15 05:00:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 05:00:50,246 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-10-15 05:00:50,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:00:50,248 INFO L225 Difference]: With dead ends: 143 [2020-10-15 05:00:50,248 INFO L226 Difference]: Without dead ends: 124 [2020-10-15 05:00:50,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2020-10-15 05:00:50,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-15 05:00:50,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 111. [2020-10-15 05:00:50,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-15 05:00:50,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 139 transitions. [2020-10-15 05:00:50,264 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 139 transitions. Word has length 62 [2020-10-15 05:00:50,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:00:50,264 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 139 transitions. [2020-10-15 05:00:50,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 05:00:50,265 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 139 transitions. [2020-10-15 05:00:50,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 05:00:50,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:00:50,266 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 05:00:50,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 05:00:50,266 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:00:50,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:00:50,267 INFO L82 PathProgramCache]: Analyzing trace with hash -386026343, now seen corresponding path program 1 times [2020-10-15 05:00:50,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:00:50,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117428722] [2020-10-15 05:00:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:00:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:50,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:50,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:50,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:50,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:50,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:50,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:50,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:50,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:55,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:55,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 05:00:55,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 05:00:55,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 05:00:55,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:55,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 05:00:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 05:00:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 05:00:55,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:00:55,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:00:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:55,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:55,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:55,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:55,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:55,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:00:55,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:55,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:55,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:55,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:55,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:00:55,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 05:00:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:55,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:55,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:55,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:55,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:55,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:00:55,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:55,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:55,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:55,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:55,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:00:55,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:00:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:55,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:55,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:55,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 05:00:55,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:55,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 05:00:55,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:55,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 05:00:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 05:00:55,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:00:55,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 05:00:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:55,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:55,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:55,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:55,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:55,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:00:55,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:55,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:55,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:55,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:55,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:55,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 05:00:55,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 05:00:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:55,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:55,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:55,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:55,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:55,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:00:55,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:55,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:00:55,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:00:55,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 05:00:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:55,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:55,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:55,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:55,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:55,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:00:55,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:55,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:55,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:55,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:55,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:00:55,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:00:55,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 05:00:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:55,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:55,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:55,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 05:00:55,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:55,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:00:55,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:55,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:55,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 05:00:55,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 05:00:55,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 05:00:55,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:00:55,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-15 05:00:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:55,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:55,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:55,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 05:00:55,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:55,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 05:00:55,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:55,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:55,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:55,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 05:00:55,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:55,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:00:55,488 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-15 05:00:55,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117428722] [2020-10-15 05:00:55,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 05:00:55,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 05:00:55,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889564911] [2020-10-15 05:00:55,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 05:00:55,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:00:55,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 05:00:55,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-15 05:00:55,490 INFO L87 Difference]: Start difference. First operand 111 states and 139 transitions. Second operand 11 states. [2020-10-15 05:00:56,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:00:56,131 INFO L93 Difference]: Finished difference Result 152 states and 184 transitions. [2020-10-15 05:00:56,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 05:00:56,132 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2020-10-15 05:00:56,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:00:56,133 INFO L225 Difference]: With dead ends: 152 [2020-10-15 05:00:56,134 INFO L226 Difference]: Without dead ends: 116 [2020-10-15 05:00:56,135 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 [2020-10-15 05:00:56,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-15 05:00:56,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 111. [2020-10-15 05:00:56,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-15 05:00:56,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 138 transitions. [2020-10-15 05:00:56,158 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 138 transitions. Word has length 61 [2020-10-15 05:00:56,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:00:56,159 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 138 transitions. [2020-10-15 05:00:56,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 05:00:56,164 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 138 transitions. [2020-10-15 05:00:56,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 05:00:56,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:00:56,166 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] [2020-10-15 05:00:56,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 05:00:56,166 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:00:56,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:00:56,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1985898344, now seen corresponding path program 2 times [2020-10-15 05:00:56,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:00:56,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702296896] [2020-10-15 05:00:56,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:00:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:56,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:56,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:56,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:56,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:56,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:58,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:58,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:58,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:58,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:58,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:58,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:59,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:00,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:01,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:01,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 05:01:01,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 05:01:01,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 05:01:01,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:01,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:01,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 05:01:01,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 05:01:01,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 05:01:01,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:01:01,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:01:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:01,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:01,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:01,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:01,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:01,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:01,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:01,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:01,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:01:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:01:01,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:01,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 05:01:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:01,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:01,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:01,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:01,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:01:01,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 05:01:01,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:01:01,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:01,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:01,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:01,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:01,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:01:01,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:01,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:01:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:01,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:01,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:01,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 05:01:01,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:01,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 05:01:01,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:01,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:01,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 05:01:01,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:01,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 05:01:01,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:01,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 05:01:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:01,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:01,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:01,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:01:01,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:01,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:01:01,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:01,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:01,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 05:01:01,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:01,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 05:01:01,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:01,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 05:01:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:01,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:01,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:01,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:01,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:01,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:01:01,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:01,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:01,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:01,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:01,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:01:01,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:01,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 05:01:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:01,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:01,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:01,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:01,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:01,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:01,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:01,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:01,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:01,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:01,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:01:01,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:01,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 05:01:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:01,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:01,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:01,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:01,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:01,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:01,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:01,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 05:01:01,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 05:01:01,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-15 05:01:01,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:01,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 05:01:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 05:01:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 05:01:01,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:01,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 05:01:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:01,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:01,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:01,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:01:01,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:01,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:01:01,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:01,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:01,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:01:01,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 05:01:01,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:01:01,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:01,658 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 05:01:01,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702296896] [2020-10-15 05:01:01,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 05:01:01,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 05:01:01,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555478105] [2020-10-15 05:01:01,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 05:01:01,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:01:01,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 05:01:01,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-15 05:01:01,662 INFO L87 Difference]: Start difference. First operand 111 states and 138 transitions. Second operand 13 states. [2020-10-15 05:01:02,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:01:02,533 INFO L93 Difference]: Finished difference Result 133 states and 161 transitions. [2020-10-15 05:01:02,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 05:01:02,533 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-10-15 05:01:02,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:01:02,535 INFO L225 Difference]: With dead ends: 133 [2020-10-15 05:01:02,535 INFO L226 Difference]: Without dead ends: 97 [2020-10-15 05:01:02,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2020-10-15 05:01:02,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-15 05:01:02,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 84. [2020-10-15 05:01:02,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-15 05:01:02,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2020-10-15 05:01:02,546 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 62 [2020-10-15 05:01:02,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:01:02,546 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2020-10-15 05:01:02,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 05:01:02,547 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2020-10-15 05:01:02,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 05:01:02,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:01:02,548 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-15 05:01:02,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 05:01:02,548 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:01:02,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:01:02,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1023238948, now seen corresponding path program 1 times [2020-10-15 05:01:02,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:01:02,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727883640] [2020-10-15 05:01:02,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:01:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:02,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:02,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:02,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:02,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:02,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:02,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:03,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:05,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:05,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:05,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:05,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:05,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:05,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:06,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:06,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:07,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:07,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 05:01:07,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 05:01:07,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 05:01:07,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:07,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:07,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 05:01:07,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 05:01:07,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 05:01:07,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:07,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:01:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:07,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:07,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:07,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:07,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:07,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:07,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:07,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:07,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:01:07,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:07,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:01:07,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:07,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 05:01:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:07,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:07,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:07,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:01:07,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:07,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:07,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:07,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:07,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:01:07,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:07,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:01:07,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:07,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:01:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:07,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:07,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:07,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 05:01:07,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:07,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 05:01:07,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:07,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:07,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 05:01:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 05:01:07,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:07,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 05:01:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:07,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:07,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:07,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:01:07,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:07,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:07,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:07,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:07,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:07,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:07,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:01:07,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:07,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 05:01:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:07,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:07,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:07,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:07,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:07,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:01:07,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:07,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:07,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:07,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:07,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:01:07,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:07,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 05:01:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:07,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:07,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:07,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:07,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:07,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:01:07,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:07,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:07,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:07,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:07,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:01:07,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:07,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 05:01:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:07,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:07,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:07,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:07,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:07,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:07,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:07,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:07,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:07,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 05:01:07,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 05:01:07,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-15 05:01:07,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:07,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:07,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 05:01:07,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:07,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 05:01:07,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:07,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 05:01:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:07,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:07,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:07,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:01:07,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:07,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 05:01:07,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:07,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:07,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 05:01:07,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 05:01:07,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:01:07,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 05:01:07,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727883640] [2020-10-15 05:01:07,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 05:01:07,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 05:01:07,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033015351] [2020-10-15 05:01:07,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 05:01:07,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:01:07,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 05:01:07,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-15 05:01:07,993 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand 16 states. [2020-10-15 05:01:08,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:01:08,817 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2020-10-15 05:01:08,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 05:01:08,817 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 62 [2020-10-15 05:01:08,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:01:08,819 INFO L225 Difference]: With dead ends: 120 [2020-10-15 05:01:08,819 INFO L226 Difference]: Without dead ends: 98 [2020-10-15 05:01:08,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2020-10-15 05:01:08,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-15 05:01:08,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 85. [2020-10-15 05:01:08,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-15 05:01:08,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2020-10-15 05:01:08,832 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 62 [2020-10-15 05:01:08,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:01:08,832 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2020-10-15 05:01:08,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 05:01:08,832 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2020-10-15 05:01:08,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 05:01:08,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:01:08,833 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 05:01:08,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 05:01:08,834 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:01:08,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:01:08,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1191493355, now seen corresponding path program 1 times [2020-10-15 05:01:08,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:01:08,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042074623] [2020-10-15 05:01:08,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:01:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:08,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:08,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:08,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:09,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:09,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:10,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:13,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:13,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:13,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:13,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:13,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 05:01:13,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 05:01:13,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 05:01:13,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:13,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 05:01:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 05:01:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 05:01:13,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:13,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:01:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:13,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:13,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:13,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:13,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:13,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:13,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:13,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:13,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:01:13,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:13,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:01:13,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:13,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 05:01:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:13,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:13,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:13,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:01:13,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:13,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:13,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:13,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:13,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:01:13,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:13,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:01:13,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:13,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:01:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:13,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:13,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:13,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 05:01:13,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:13,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 05:01:13,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:13,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 05:01:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 05:01:13,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:13,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 05:01:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:13,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:13,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:13,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:01:13,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:13,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:13,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:13,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:13,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:13,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:13,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:01:13,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:14,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 05:01:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:14,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:14,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:14,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:14,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:14,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:01:14,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:14,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:14,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:14,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:14,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:01:14,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:14,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 05:01:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:14,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:14,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:14,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:14,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:14,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:14,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:14,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:14,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:14,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:14,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:01:14,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:14,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 05:01:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:14,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:14,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:14,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:14,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:14,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 05:01:14,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 05:01:14,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 05:01:14,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:14,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:14,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:14,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:14,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 05:01:14,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:14,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 05:01:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:14,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:14,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:14,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:14,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 05:01:14,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 05:01:14,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 05:01:14,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:14,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:14,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:14,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:14,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 05:01:14,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:14,066 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 05:01:14,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042074623] [2020-10-15 05:01:14,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 05:01:14,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 05:01:14,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269816077] [2020-10-15 05:01:14,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 05:01:14,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:01:14,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 05:01:14,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-15 05:01:14,068 INFO L87 Difference]: Start difference. First operand 85 states and 101 transitions. Second operand 12 states. [2020-10-15 05:01:14,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:01:14,628 INFO L93 Difference]: Finished difference Result 116 states and 140 transitions. [2020-10-15 05:01:14,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 05:01:14,629 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-10-15 05:01:14,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:01:14,631 INFO L225 Difference]: With dead ends: 116 [2020-10-15 05:01:14,631 INFO L226 Difference]: Without dead ends: 90 [2020-10-15 05:01:14,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2020-10-15 05:01:14,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-15 05:01:14,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2020-10-15 05:01:14,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-15 05:01:14,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2020-10-15 05:01:14,642 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 64 [2020-10-15 05:01:14,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:01:14,643 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2020-10-15 05:01:14,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 05:01:14,643 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2020-10-15 05:01:14,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 05:01:14,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:01:14,644 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] [2020-10-15 05:01:14,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 05:01:14,644 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:01:14,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:01:14,645 INFO L82 PathProgramCache]: Analyzing trace with hash -751060663, now seen corresponding path program 2 times [2020-10-15 05:01:14,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:01:14,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206162642] [2020-10-15 05:01:14,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:01:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:14,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:14,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:14,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:14,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:15,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:15,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:19,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:19,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 05:01:19,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 05:01:19,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 05:01:19,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:19,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 05:01:19,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 05:01:19,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-15 05:01:19,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:19,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:01:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:19,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:19,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:19,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:19,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:19,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:19,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:19,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:19,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:01:19,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:19,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:01:19,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:19,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 05:01:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:19,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:19,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:19,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:19,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:01:19,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 05:01:19,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 05:01:19,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:19,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:19,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:19,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:19,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:01:19,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:19,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:01:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:19,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:19,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:19,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 05:01:19,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:19,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-15 05:01:19,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:19,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:19,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 05:01:19,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:19,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 05:01:19,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:19,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 05:01:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:19,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:19,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:19,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:01:19,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:19,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:01:19,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:19,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:19,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 05:01:19,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:19,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 05:01:19,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:20,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 05:01:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:20,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:20,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:20,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:20,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:20,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:20,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:20,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:20,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:20,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:20,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:01:20,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:20,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 05:01:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:20,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:20,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:20,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:20,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:20,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:01:20,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:20,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:20,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:20,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:20,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:01:20,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:20,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 05:01:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:20,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:20,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:20,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:20,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:20,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 05:01:20,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 05:01:20,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 05:01:20,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:20,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:20,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:20,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:20,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 05:01:20,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:20,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 05:01:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:20,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:20,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:20,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 05:01:20,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:20,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 05:01:20,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:20,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:20,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 05:01:20,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:20,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 05:01:20,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-15 05:01:20,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206162642] [2020-10-15 05:01:20,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 05:01:20,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-15 05:01:20,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953049960] [2020-10-15 05:01:20,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-15 05:01:20,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:01:20,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-15 05:01:20,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-15 05:01:20,313 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand 21 states. [2020-10-15 05:01:22,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:01:22,209 INFO L93 Difference]: Finished difference Result 133 states and 167 transitions. [2020-10-15 05:01:22,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 05:01:22,211 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 66 [2020-10-15 05:01:22,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:01:22,212 INFO L225 Difference]: With dead ends: 133 [2020-10-15 05:01:22,212 INFO L226 Difference]: Without dead ends: 131 [2020-10-15 05:01:22,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=195, Invalid=1697, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 05:01:22,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-15 05:01:22,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 113. [2020-10-15 05:01:22,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-15 05:01:22,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 145 transitions. [2020-10-15 05:01:22,242 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 145 transitions. Word has length 66 [2020-10-15 05:01:22,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:01:22,244 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 145 transitions. [2020-10-15 05:01:22,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-15 05:01:22,244 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 145 transitions. [2020-10-15 05:01:22,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 05:01:22,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:01:22,245 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] [2020-10-15 05:01:22,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 05:01:22,246 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:01:22,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:01:22,246 INFO L82 PathProgramCache]: Analyzing trace with hash 273712908, now seen corresponding path program 3 times [2020-10-15 05:01:22,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:01:22,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685603556] [2020-10-15 05:01:22,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:01:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:22,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:22,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:22,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:22,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:22,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:24,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:27,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:27,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 05:01:27,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 05:01:27,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 05:01:27,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:27,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:27,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 05:01:27,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 05:01:27,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 05:01:27,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:27,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:01:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:27,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:27,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:27,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:27,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:27,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:27,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:27,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:27,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:01:27,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:27,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:01:27,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:01:27,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 05:01:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:27,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:27,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:27,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:27,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:01:27,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 05:01:27,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:01:27,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:27,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:27,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:27,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:27,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:01:27,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:27,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:01:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:27,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:27,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:27,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 05:01:27,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:27,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-15 05:01:27,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:27,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:27,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 05:01:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 05:01:27,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:01:27,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 05:01:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:27,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:27,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:27,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:01:27,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:27,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 05:01:27,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:27,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:27,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 05:01:27,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:27,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 05:01:27,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:01:27,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 05:01:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:27,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:27,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:27,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:27,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:27,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 05:01:27,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:27,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:27,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:01:27,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:27,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 05:01:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:27,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:27,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:27,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:27,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:27,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 05:01:27,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:27,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:27,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:27,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:27,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:01:27,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:01:27,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 05:01:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:27,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:27,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:27,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:27,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:27,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 05:01:27,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 05:01:27,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 05:01:27,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:27,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:27,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:27,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:27,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 05:01:27,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:01:27,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 05:01:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:27,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:27,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:27,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 05:01:27,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:27,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-15 05:01:27,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:27,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 05:01:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 05:01:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 05:01:27,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:27,750 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-15 05:01:27,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685603556] [2020-10-15 05:01:27,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 05:01:27,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 05:01:27,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461149697] [2020-10-15 05:01:27,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 05:01:27,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:01:27,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 05:01:27,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-15 05:01:27,753 INFO L87 Difference]: Start difference. First operand 113 states and 145 transitions. Second operand 16 states. [2020-10-15 05:01:28,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:01:28,858 INFO L93 Difference]: Finished difference Result 151 states and 205 transitions. [2020-10-15 05:01:28,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 05:01:28,859 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2020-10-15 05:01:28,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:01:28,861 INFO L225 Difference]: With dead ends: 151 [2020-10-15 05:01:28,861 INFO L226 Difference]: Without dead ends: 139 [2020-10-15 05:01:28,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=959, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 05:01:28,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-15 05:01:28,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 120. [2020-10-15 05:01:28,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-15 05:01:28,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2020-10-15 05:01:28,876 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 67 [2020-10-15 05:01:28,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:01:28,877 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2020-10-15 05:01:28,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 05:01:28,877 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2020-10-15 05:01:28,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 05:01:28,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:01:28,878 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] [2020-10-15 05:01:28,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 05:01:28,878 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:01:28,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:01:28,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1185436428, now seen corresponding path program 1 times [2020-10-15 05:01:28,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:01:28,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602160274] [2020-10-15 05:01:28,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:01:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:28,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:28,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:28,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:29,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:29,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:29,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:29,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:31,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:31,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:31,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:31,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:31,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:33,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:33,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 05:01:33,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 05:01:33,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 05:01:33,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:33,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:33,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 05:01:33,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 05:01:33,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 05:01:33,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:33,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:01:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:33,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:33,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:33,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:33,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:33,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:33,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:33,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:33,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:01:33,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:33,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:01:33,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:33,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 05:01:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:33,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:33,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:33,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:01:33,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:33,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:33,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:33,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:33,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:01:33,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:33,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:01:33,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:01:33,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:01:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:33,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:33,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:33,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 05:01:33,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:33,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 05:01:33,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:33,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:33,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 05:01:33,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:33,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 05:01:33,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:34,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 05:01:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:34,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:34,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:34,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:01:34,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:34,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:01:34,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:34,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:34,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:34,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:34,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:01:34,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:01:34,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 05:01:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:34,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:34,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:34,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:34,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:34,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 05:01:34,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:34,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:34,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:34,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:34,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:01:34,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:01:34,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 05:01:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:34,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:34,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:34,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:34,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:34,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 05:01:34,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:34,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:34,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:34,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:34,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:01:34,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:01:34,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 05:01:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:34,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:34,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:34,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:34,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:34,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 05:01:34,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 05:01:34,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-15 05:01:34,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:34,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:34,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 05:01:34,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:01:34,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-15 05:01:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:34,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:34,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:34,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 05:01:34,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:34,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 05:01:34,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:34,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:34,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 05:01:34,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 05:01:34,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 05:01:34,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:34,336 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-15 05:01:34,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602160274] [2020-10-15 05:01:34,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 05:01:34,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 05:01:34,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456296527] [2020-10-15 05:01:34,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 05:01:34,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:01:34,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 05:01:34,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-15 05:01:34,339 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand 14 states. [2020-10-15 05:01:35,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:01:35,214 INFO L93 Difference]: Finished difference Result 170 states and 226 transitions. [2020-10-15 05:01:35,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 05:01:35,215 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2020-10-15 05:01:35,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:01:35,216 INFO L225 Difference]: With dead ends: 170 [2020-10-15 05:01:35,217 INFO L226 Difference]: Without dead ends: 142 [2020-10-15 05:01:35,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=641, Unknown=0, NotChecked=0, Total=756 [2020-10-15 05:01:35,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-15 05:01:35,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 108. [2020-10-15 05:01:35,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-15 05:01:35,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 131 transitions. [2020-10-15 05:01:35,235 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 131 transitions. Word has length 67 [2020-10-15 05:01:35,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:01:35,236 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 131 transitions. [2020-10-15 05:01:35,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 05:01:35,236 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 131 transitions. [2020-10-15 05:01:35,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 05:01:35,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:01:35,237 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] [2020-10-15 05:01:35,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 05:01:35,237 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:01:35,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:01:35,238 INFO L82 PathProgramCache]: Analyzing trace with hash 402861257, now seen corresponding path program 4 times [2020-10-15 05:01:35,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:01:35,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415120899] [2020-10-15 05:01:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:01:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:35,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:35,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:35,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:35,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:35,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:35,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:35,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:36,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:39,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:40,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:40,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 05:01:40,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 05:01:40,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 05:01:40,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:40,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:40,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 05:01:40,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 05:01:40,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 05:01:40,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:40,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:01:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:40,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:40,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:40,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:40,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:40,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:40,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:40,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:40,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:01:40,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:40,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:01:40,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:40,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 05:01:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:40,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:40,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:40,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:01:40,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:40,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:40,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:40,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:40,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:01:40,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:40,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:01:40,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:40,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:01:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:40,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:40,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:40,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 05:01:40,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:40,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-15 05:01:40,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:40,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:40,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 05:01:40,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:40,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 05:01:40,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:01:40,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 05:01:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:40,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:40,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:40,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:01:40,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:40,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:40,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:40,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:40,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:40,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:01:40,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:40,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 05:01:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:40,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:40,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:40,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:40,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:40,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:01:40,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:40,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:40,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:40,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:40,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:01:40,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:01:40,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 05:01:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:40,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:40,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:40,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:40,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:40,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 05:01:40,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:40,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:40,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:40,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:40,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:01:40,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:01:40,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-15 05:01:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:40,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:40,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:40,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:40,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 05:01:40,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 05:01:40,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 05:01:40,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:40,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:40,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 05:01:40,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 05:01:40,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 05:01:40,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 05:01:40,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-15 05:01:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:40,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:40,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:40,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 05:01:40,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:40,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 05:01:40,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:40,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:01:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 05:01:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:01:40,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:01:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 05:01:40,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415120899] [2020-10-15 05:01:40,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 05:01:40,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 05:01:40,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258261873] [2020-10-15 05:01:40,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 05:01:40,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:01:40,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 05:01:40,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-15 05:01:40,661 INFO L87 Difference]: Start difference. First operand 108 states and 131 transitions. Second operand 13 states. [2020-10-15 05:01:41,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:01:41,767 INFO L93 Difference]: Finished difference Result 170 states and 213 transitions. [2020-10-15 05:01:41,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 05:01:41,767 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-10-15 05:01:41,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:01:41,769 INFO L225 Difference]: With dead ends: 170 [2020-10-15 05:01:41,769 INFO L226 Difference]: Without dead ends: 131 [2020-10-15 05:01:41,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2020-10-15 05:01:41,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-15 05:01:41,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 114. [2020-10-15 05:01:41,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-15 05:01:41,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 139 transitions. [2020-10-15 05:01:41,808 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 139 transitions. Word has length 67 [2020-10-15 05:01:41,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:01:41,808 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 139 transitions. [2020-10-15 05:01:41,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 05:01:41,808 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 139 transitions. [2020-10-15 05:01:41,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 05:01:41,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:01:41,820 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] [2020-10-15 05:01:41,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 05:01:41,821 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:01:41,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:01:41,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1939838792, now seen corresponding path program 5 times [2020-10-15 05:01:41,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:01:41,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412809896] [2020-10-15 05:01:41,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:01:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:41,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:41,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:41,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:41,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:41,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:43,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:43,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:46,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:46,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 05:01:46,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 05:01:46,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 05:01:46,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:46,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:46,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 05:01:46,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 05:01:46,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 05:01:46,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:46,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:01:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:46,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:46,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:46,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:46,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:46,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:46,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:46,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:01:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:01:46,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:46,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 05:01:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:46,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:46,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:46,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:46,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:01:46,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 05:01:46,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:01:46,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:46,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:46,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:46,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:46,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:01:46,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:46,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:01:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:46,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:46,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:46,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 05:01:46,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:46,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-15 05:01:46,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:46,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:46,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 05:01:46,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:46,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 05:01:46,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:47,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 05:01:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:47,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:47,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:47,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:01:47,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:47,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:01:47,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:47,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:47,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 05:01:47,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:47,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 05:01:47,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:47,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 05:01:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:47,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:47,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:47,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:47,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:47,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:01:47,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:47,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:47,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:47,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:47,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:01:47,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:47,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 05:01:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:47,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:47,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:47,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:47,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:47,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:47,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:47,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:47,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:47,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:47,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:01:47,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:01:47,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 05:01:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:47,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:47,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:47,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:47,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:47,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 05:01:47,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 05:01:47,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 05:01:47,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:47,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:47,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:47,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:47,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 05:01:47,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:47,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 05:01:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:47,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:47,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:47,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:47,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:47,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 05:01:47,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 05:01:47,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-15 05:01:47,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:47,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:47,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 05:01:47,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 05:01:47,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 05:01:47,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:47,368 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 05:01:47,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412809896] [2020-10-15 05:01:47,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 05:01:47,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-15 05:01:47,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211912851] [2020-10-15 05:01:47,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 05:01:47,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:01:47,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 05:01:47,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-15 05:01:47,371 INFO L87 Difference]: Start difference. First operand 114 states and 139 transitions. Second operand 17 states. [2020-10-15 05:01:48,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:01:48,671 INFO L93 Difference]: Finished difference Result 143 states and 175 transitions. [2020-10-15 05:01:48,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 05:01:48,672 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-15 05:01:48,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:01:48,674 INFO L225 Difference]: With dead ends: 143 [2020-10-15 05:01:48,674 INFO L226 Difference]: Without dead ends: 131 [2020-10-15 05:01:48,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 05:01:48,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-15 05:01:48,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 106. [2020-10-15 05:01:48,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-15 05:01:48,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2020-10-15 05:01:48,688 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 70 [2020-10-15 05:01:48,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:01:48,689 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2020-10-15 05:01:48,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 05:01:48,689 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2020-10-15 05:01:48,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 05:01:48,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:01:48,690 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] [2020-10-15 05:01:48,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 05:01:48,691 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:01:48,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:01:48,691 INFO L82 PathProgramCache]: Analyzing trace with hash 880941243, now seen corresponding path program 6 times [2020-10-15 05:01:48,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:01:48,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086018806] [2020-10-15 05:01:48,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:01:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:48,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:48,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:48,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:48,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:48,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:48,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:49,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:49,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:51,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:51,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:53,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:53,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 05:01:53,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 05:01:53,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 05:01:53,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:53,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:53,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 05:01:53,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 05:01:53,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 05:01:53,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:53,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:01:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:53,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:53,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:53,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:53,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:53,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:53,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:53,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:53,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:01:53,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:53,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:01:53,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:53,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 05:01:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:53,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:53,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:53,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:01:53,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:53,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:53,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:53,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:01:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:01:53,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:01:53,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:01:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:53,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:53,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:53,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 05:01:53,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:53,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-15 05:01:53,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:53,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:53,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 05:01:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 05:01:53,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:53,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 05:01:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:53,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:53,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:53,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:01:53,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:53,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:01:53,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:53,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:53,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:53,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:53,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:01:53,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:01:53,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 05:01:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:53,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:53,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:53,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:53,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:53,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 05:01:53,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:53,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:53,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:53,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:53,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:01:53,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:01:53,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 05:01:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:53,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:53,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:53,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:01:53,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:53,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 05:01:53,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:53,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:53,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:01:53,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:01:53,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:01:53,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:53,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-15 05:01:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:54,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:54,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:54,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:54,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:54,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:54,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:54,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 05:01:54,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 05:01:54,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-15 05:01:54,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:54,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:54,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 05:01:54,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 05:01:54,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 05:01:54,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:01:54,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 05:01:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:54,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:54,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:01:54,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 05:01:54,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:01:54,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 05:01:54,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:01:54,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:01:54,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:01:54,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 05:01:54,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:01:54,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:01:54,140 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 05:01:54,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086018806] [2020-10-15 05:01:54,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 05:01:54,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 05:01:54,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531248961] [2020-10-15 05:01:54,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 05:01:54,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:01:54,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 05:01:54,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-15 05:01:54,143 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand 14 states. [2020-10-15 05:01:59,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:01:59,272 INFO L93 Difference]: Finished difference Result 152 states and 187 transitions. [2020-10-15 05:01:59,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 05:01:59,273 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 70 [2020-10-15 05:01:59,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:01:59,274 INFO L225 Difference]: With dead ends: 152 [2020-10-15 05:01:59,274 INFO L226 Difference]: Without dead ends: 120 [2020-10-15 05:01:59,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2020-10-15 05:01:59,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-15 05:01:59,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 108. [2020-10-15 05:01:59,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-15 05:01:59,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 129 transitions. [2020-10-15 05:01:59,288 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 129 transitions. Word has length 70 [2020-10-15 05:01:59,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:01:59,288 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 129 transitions. [2020-10-15 05:01:59,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 05:01:59,288 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 129 transitions. [2020-10-15 05:01:59,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 05:01:59,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:01:59,290 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-15 05:01:59,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 05:01:59,290 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:01:59,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:01:59,291 INFO L82 PathProgramCache]: Analyzing trace with hash -419837667, now seen corresponding path program 7 times [2020-10-15 05:01:59,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:01:59,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569365021] [2020-10-15 05:01:59,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:01:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:01:59,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:59,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:59,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:59,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:59,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:59,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:01:59,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:00,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:00,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:00,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:01,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:02,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:02,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:02,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:03,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:04,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:04,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:02:04,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-15 05:02:04,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 05:02:04,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 05:02:04,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:02:04,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:02:04,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 05:02:04,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 05:02:04,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 05:02:04,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:02:04,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:02:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:02:04,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:04,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:02:04,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:02:04,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:02:04,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:02:04,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:02:04,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:02:04,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:02:04,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:02:04,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:02:04,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:02:04,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 05:02:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:02:04,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:04,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:02:04,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:02:04,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:02:04,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 05:02:04,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:02:04,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:02:04,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:02:04,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:02:04,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:02:04,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:02:04,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:02:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:02:04,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:04,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:02:04,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 05:02:04,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:02:04,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-15 05:02:04,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:02:04,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:02:04,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 05:02:04,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:02:04,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 05:02:04,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:02:04,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 05:02:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:02:04,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:04,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:02:04,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:02:04,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:02:04,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:02:04,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:02:04,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:02:04,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:02:04,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:02:04,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:02:04,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:02:04,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 05:02:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:02:04,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:04,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:02:04,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:02:04,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:02:04,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:02:04,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:02:04,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:02:04,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:02:04,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:02:04,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:02:04,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:02:04,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 05:02:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:02:04,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:04,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:02:04,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:02:04,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:02:04,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:02:04,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:02:04,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:02:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:02:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:02:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:02:04,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:02:04,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-15 05:02:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:02:04,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:04,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:04,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:04,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:04,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:04,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:02:04,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 05:02:04,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 05:02:04,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-15 05:02:04,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:02:04,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:02:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 05:02:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:02:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 05:02:04,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:02:04,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-15 05:02:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:02:04,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:04,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:02:04,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 05:02:04,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:02:04,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 05:02:04,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:02:04,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:02:04,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 05:02:04,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 05:02:04,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 05:02:04,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:02:04,812 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 05:02:04,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569365021] [2020-10-15 05:02:04,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 05:02:04,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 05:02:04,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36022775] [2020-10-15 05:02:04,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 05:02:04,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:02:04,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 05:02:04,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-15 05:02:04,814 INFO L87 Difference]: Start difference. First operand 108 states and 129 transitions. Second operand 16 states. [2020-10-15 05:02:06,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:02:06,084 INFO L93 Difference]: Finished difference Result 169 states and 209 transitions. [2020-10-15 05:02:06,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 05:02:06,084 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 72 [2020-10-15 05:02:06,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:02:06,086 INFO L225 Difference]: With dead ends: 169 [2020-10-15 05:02:06,087 INFO L226 Difference]: Without dead ends: 147 [2020-10-15 05:02:06,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=162, Invalid=1028, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 05:02:06,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-15 05:02:06,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 118. [2020-10-15 05:02:06,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-15 05:02:06,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 144 transitions. [2020-10-15 05:02:06,106 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 144 transitions. Word has length 72 [2020-10-15 05:02:06,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:02:06,107 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 144 transitions. [2020-10-15 05:02:06,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 05:02:06,107 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 144 transitions. [2020-10-15 05:02:06,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 05:02:06,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:02:06,108 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] [2020-10-15 05:02:06,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 05:02:06,109 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:02:06,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:02:06,109 INFO L82 PathProgramCache]: Analyzing trace with hash 877560638, now seen corresponding path program 1 times [2020-10-15 05:02:06,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:02:06,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089829024] [2020-10-15 05:02:06,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:02:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:02:06,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:06,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:06,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:06,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:06,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:07,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:09,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:11,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:02:11,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 05:02:11,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 05:02:11,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 05:02:11,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:02:11,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:02:11,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-15 05:02:11,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 05:02:11,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-15 05:02:11,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:02:12,311 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 31 [2020-10-15 05:02:12,685 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 49 [2020-10-15 05:02:13,523 WARN L193 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 40 [2020-10-15 05:02:14,481 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 31 [2020-10-15 05:02:15,270 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 14 [2020-10-15 05:02:16,909 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 135 DAG size of output: 46 [2020-10-15 05:02:18,010 WARN L193 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 52 [2020-10-15 05:02:18,766 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 43 [2020-10-15 05:02:19,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:02:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:02:19,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:19,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:02:19,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:02:19,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:02:19,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:02:19,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:02:19,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:02:19,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:02:19,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:02:19,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:02:19,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:02:19,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 05:02:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:02:19,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:19,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:19,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:02:19,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:02:19,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 05:02:19,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:02:19,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:02:19,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:02:19,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:02:19,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:02:19,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:02:19,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:02:19,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:02:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:02:19,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:19,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:02:19,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 05:02:19,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:02:19,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-15 05:02:19,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:02:19,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:02:19,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 05:02:19,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:02:19,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 05:02:19,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:02:19,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 05:02:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:02:19,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:19,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:02:19,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:02:19,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:02:19,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 05:02:19,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:02:19,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:02:19,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 05:02:19,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:02:19,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 05:02:19,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:02:19,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 05:02:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:02:19,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:19,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:02:19,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:02:19,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:02:19,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:02:19,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:02:19,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:02:19,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 05:02:19,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:02:19,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:02:19,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:02:19,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 05:02:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:02:19,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:19,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:02:19,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:02:19,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:02:19,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:02:19,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:02:19,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:02:19,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 05:02:19,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 05:02:19,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 05:02:19,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:02:19,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 05:02:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:02:19,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:19,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:19,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:02:19,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 05:02:19,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 05:02:19,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 05:02:19,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:02:19,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:02:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 05:02:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 05:02:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 05:02:19,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:02:19,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 05:02:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:02:19,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:19,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:02:19,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 05:02:19,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:02:19,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-15 05:02:19,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:02:19,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:02:19,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 05:02:19,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 05:02:19,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 05:02:19,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:02:20,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-15 05:02:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:02:20,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:20,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:02:20,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:02:20,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:02:20,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 05:02:20,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:02:20,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:02:20,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:02:20,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:02:20,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:02:20,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:02:20,607 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 05:02:20,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089829024] [2020-10-15 05:02:20,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 05:02:20,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 05:02:20,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618822538] [2020-10-15 05:02:20,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 05:02:20,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:02:20,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 05:02:20,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2020-10-15 05:02:20,617 INFO L87 Difference]: Start difference. First operand 118 states and 144 transitions. Second operand 30 states. [2020-10-15 05:02:23,806 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-10-15 05:02:26,153 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-15 05:02:27,996 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification that was a NOOP. DAG size: 103 [2020-10-15 05:02:31,516 WARN L193 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2020-10-15 05:02:34,879 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 95 [2020-10-15 05:02:36,658 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 97 [2020-10-15 05:02:38,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:02:38,068 INFO L93 Difference]: Finished difference Result 161 states and 197 transitions. [2020-10-15 05:02:38,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-15 05:02:38,069 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 74 [2020-10-15 05:02:38,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:02:38,071 INFO L225 Difference]: With dead ends: 161 [2020-10-15 05:02:38,071 INFO L226 Difference]: Without dead ends: 159 [2020-10-15 05:02:38,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=361, Invalid=3545, Unknown=0, NotChecked=0, Total=3906 [2020-10-15 05:02:38,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-15 05:02:38,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 144. [2020-10-15 05:02:38,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-15 05:02:38,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 178 transitions. [2020-10-15 05:02:38,095 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 178 transitions. Word has length 74 [2020-10-15 05:02:38,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:02:38,096 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 178 transitions. [2020-10-15 05:02:38,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 05:02:38,096 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 178 transitions. [2020-10-15 05:02:38,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 05:02:38,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:02:38,098 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] [2020-10-15 05:02:38,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 05:02:38,098 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:02:38,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:02:38,099 INFO L82 PathProgramCache]: Analyzing trace with hash -428586079, now seen corresponding path program 1 times [2020-10-15 05:02:38,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:02:38,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784053195] [2020-10-15 05:02:38,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:02:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:02:38,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:38,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:39,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:39,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:41,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:02:43,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:02:43,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-15 05:02:43,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 05:02:43,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 05:02:43,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:02:43,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:02:43,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-15 05:02:43,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 05:02:43,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 05:02:43,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:02:54,912 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 35 [2020-10-15 05:02:56,212 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 240 DAG size of output: 39 [2020-10-15 05:02:56,946 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 28 [2020-10-15 05:02:59,029 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 490 DAG size of output: 25 [2020-10-15 05:03:01,398 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 474 DAG size of output: 12