/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:19:23,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:19:23,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:19:23,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:19:23,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:19:23,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:19:23,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:19:23,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:19:23,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:19:23,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:19:23,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:19:23,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:19:23,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:19:23,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:19:23,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:19:23,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:19:23,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:19:23,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:19:23,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:19:23,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:19:23,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:19:23,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:19:23,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:19:23,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:19:23,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:19:23,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:19:23,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:19:23,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:19:23,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:19:23,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:19:23,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:19:23,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:19:23,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:19:23,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:19:23,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:19:23,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:19:23,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:19:23,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:19:23,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:19:23,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:19:23,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:19:23,440 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 19:19:23,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:19:23,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:19:23,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:19:23,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:19:23,490 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:19:23,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:19:23,490 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:19:23,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:19:23,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:19:23,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:19:23,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:19:23,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:19:23,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:19:23,493 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:19:23,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:19:23,493 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:19:23,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:19:23,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:19:23,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:19:23,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:19:23,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:19:23,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:19:23,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:19:23,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:19:23,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:19:23,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:19:23,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:19:23,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:19:23,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:19:23,496 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:19:23,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:19:23,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:19:23,820 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:19:23,822 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:19:23,822 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:19:23,823 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label04.c [2020-10-14 19:19:23,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a0c57435/1e1b3d63217c496fbab4363b07e2cd9f/FLAG2589d0294 [2020-10-14 19:19:24,662 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:19:24,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label04.c [2020-10-14 19:19:24,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a0c57435/1e1b3d63217c496fbab4363b07e2cd9f/FLAG2589d0294 [2020-10-14 19:19:24,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a0c57435/1e1b3d63217c496fbab4363b07e2cd9f [2020-10-14 19:19:24,764 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:19:24,766 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:19:24,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:19:24,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:19:24,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:19:24,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:19:24" (1/1) ... [2020-10-14 19:19:24,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570ad94a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:24, skipping insertion in model container [2020-10-14 19:19:24,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:19:24" (1/1) ... [2020-10-14 19:19:24,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:19:24,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:19:26,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:19:26,514 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:19:27,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:19:27,298 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:19:27,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:27 WrapperNode [2020-10-14 19:19:27,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:19:27,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:19:27,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:19:27,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:19:27,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:27" (1/1) ... [2020-10-14 19:19:27,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:27" (1/1) ... [2020-10-14 19:19:27,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:27" (1/1) ... [2020-10-14 19:19:27,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:27" (1/1) ... [2020-10-14 19:19:27,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:27" (1/1) ... [2020-10-14 19:19:27,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:27" (1/1) ... [2020-10-14 19:19:27,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:27" (1/1) ... [2020-10-14 19:19:27,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:19:27,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:19:27,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:19:27,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:19:27,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:19:27,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:19:27,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:19:27,773 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:19:27,773 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:19:27,774 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:19:27,774 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:19:27,774 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:19:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:19:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:19:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:19:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:19:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:19:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:19:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:19:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:19:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:19:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:19:32,189 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:19:32,189 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:19:32,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:19:32 BoogieIcfgContainer [2020-10-14 19:19:32,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:19:32,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:19:32,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:19:32,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:19:32,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:19:24" (1/3) ... [2020-10-14 19:19:32,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d992be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:19:32, skipping insertion in model container [2020-10-14 19:19:32,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:27" (2/3) ... [2020-10-14 19:19:32,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d992be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:19:32, skipping insertion in model container [2020-10-14 19:19:32,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:19:32" (3/3) ... [2020-10-14 19:19:32,218 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label04.c [2020-10-14 19:19:32,230 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:19:32,244 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:19:32,260 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:19:32,293 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:19:32,294 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:19:32,294 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:19:32,294 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:19:32,294 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:19:32,294 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:19:32,295 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:19:32,295 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:19:32,342 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 19:19:32,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2020-10-14 19:19:32,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:19:32,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:19:32,396 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:19:32,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:19:32,403 INFO L82 PathProgramCache]: Analyzing trace with hash -384580845, now seen corresponding path program 1 times [2020-10-14 19:19:32,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:19:32,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580740893] [2020-10-14 19:19:32,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:19:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:33,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:37,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:38,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:38,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 790 [2020-10-14 19:19:38,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:19:38,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5116 [2020-10-14 19:19:38,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:38,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:38,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:19:38,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:19:38,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 784 [2020-10-14 19:19:38,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:19:39,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:19:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:39,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:39,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:39,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:19:39,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:39,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:19:39,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:39,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:39,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:19:39,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:19:39,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:19:39,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:19:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:19:39,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580740893] [2020-10-14 19:19:39,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:19:39,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:19:39,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361719904] [2020-10-14 19:19:39,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:19:39,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:19:39,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:19:39,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:19:39,755 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-14 19:19:47,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:19:47,900 INFO L93 Difference]: Finished difference Result 2672 states and 5134 transitions. [2020-10-14 19:19:47,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:19:47,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 776 [2020-10-14 19:19:47,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:19:47,969 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 19:19:47,969 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 19:19:47,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:19:48,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 19:19:48,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1698. [2020-10-14 19:19:48,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1698 states. [2020-10-14 19:19:48,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2780 transitions. [2020-10-14 19:19:48,157 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2780 transitions. Word has length 776 [2020-10-14 19:19:48,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:19:48,159 INFO L479 AbstractCegarLoop]: Abstraction has 1698 states and 2780 transitions. [2020-10-14 19:19:48,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:19:48,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2780 transitions. [2020-10-14 19:19:48,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2020-10-14 19:19:48,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:19:48,194 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:19:48,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:19:48,195 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:19:48,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:19:48,195 INFO L82 PathProgramCache]: Analyzing trace with hash 214236468, now seen corresponding path program 1 times [2020-10-14 19:19:48,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:19:48,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698415562] [2020-10-14 19:19:48,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:19:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:48,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:49,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:53,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:53,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 803 [2020-10-14 19:19:53,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:19:53,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 19:19:53,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:53,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:53,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:19:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:19:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 781 [2020-10-14 19:19:53,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:19:53,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:19:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:53,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:53,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:53,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:19:53,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:53,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:19:53,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:53,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:19:53,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:19:53,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:19:53,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:19:53,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:19:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:53,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:53,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:53,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:19:53,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:53,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 19:19:53,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:53,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:53,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:19:53,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:19:53,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:19:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:19:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:19:54,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698415562] [2020-10-14 19:19:54,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:19:54,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:19:54,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32145247] [2020-10-14 19:19:54,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:19:54,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:19:54,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:19:54,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:19:54,460 INFO L87 Difference]: Start difference. First operand 1698 states and 2780 transitions. Second operand 5 states. [2020-10-14 19:20:02,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:20:02,755 INFO L93 Difference]: Finished difference Result 5088 states and 8397 transitions. [2020-10-14 19:20:02,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:20:02,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 787 [2020-10-14 19:20:02,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:20:02,790 INFO L225 Difference]: With dead ends: 5088 [2020-10-14 19:20:02,790 INFO L226 Difference]: Without dead ends: 3396 [2020-10-14 19:20:02,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:20:02,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3396 states. [2020-10-14 19:20:02,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3396 to 3392. [2020-10-14 19:20:02,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3392 states. [2020-10-14 19:20:02,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3392 states to 3392 states and 5280 transitions. [2020-10-14 19:20:02,880 INFO L78 Accepts]: Start accepts. Automaton has 3392 states and 5280 transitions. Word has length 787 [2020-10-14 19:20:02,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:20:02,881 INFO L479 AbstractCegarLoop]: Abstraction has 3392 states and 5280 transitions. [2020-10-14 19:20:02,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:20:02,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3392 states and 5280 transitions. [2020-10-14 19:20:02,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 799 [2020-10-14 19:20:02,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:20:02,896 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:20:02,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:20:02,896 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:20:02,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:20:02,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1517948219, now seen corresponding path program 1 times [2020-10-14 19:20:02,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:20:02,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32771910] [2020-10-14 19:20:02,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:20:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:02,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:03,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:06,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:08,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:08,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 816 [2020-10-14 19:20:08,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:20:08,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-14 19:20:08,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:08,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:08,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:20:08,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 19:20:08,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 781 [2020-10-14 19:20:08,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:08,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:20:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:08,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:08,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:08,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:20:08,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:08,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:20:08,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:08,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:08,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:08,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:08,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:08,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:08,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:20:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:08,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:08,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:08,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 19:20:08,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:08,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:20:08,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:08,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:08,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:08,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:08,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:08,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:08,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 19:20:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:08,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:08,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:08,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:20:08,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:08,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:20:08,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:08,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:08,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:20:08,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:08,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:20:08,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:10,088 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 19:20:10,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32771910] [2020-10-14 19:20:10,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:20:10,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:20:10,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602501786] [2020-10-14 19:20:10,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:20:10,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:20:10,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:20:10,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:20:10,093 INFO L87 Difference]: Start difference. First operand 3392 states and 5280 transitions. Second operand 5 states. [2020-10-14 19:20:19,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:20:19,341 INFO L93 Difference]: Finished difference Result 8474 states and 13658 transitions. [2020-10-14 19:20:19,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:20:19,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 798 [2020-10-14 19:20:19,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:20:19,380 INFO L225 Difference]: With dead ends: 8474 [2020-10-14 19:20:19,381 INFO L226 Difference]: Without dead ends: 5088 [2020-10-14 19:20:19,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:20:19,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5088 states. [2020-10-14 19:20:19,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5088 to 5082. [2020-10-14 19:20:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5082 states. [2020-10-14 19:20:19,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5082 states to 5082 states and 7548 transitions. [2020-10-14 19:20:19,508 INFO L78 Accepts]: Start accepts. Automaton has 5082 states and 7548 transitions. Word has length 798 [2020-10-14 19:20:19,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:20:19,510 INFO L479 AbstractCegarLoop]: Abstraction has 5082 states and 7548 transitions. [2020-10-14 19:20:19,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:20:19,510 INFO L276 IsEmpty]: Start isEmpty. Operand 5082 states and 7548 transitions. [2020-10-14 19:20:19,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2020-10-14 19:20:19,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:20:19,530 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:20:19,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:20:19,531 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:20:19,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:20:19,532 INFO L82 PathProgramCache]: Analyzing trace with hash 184414253, now seen corresponding path program 1 times [2020-10-14 19:20:19,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:20:19,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884101063] [2020-10-14 19:20:19,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:20:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:19,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:19,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:23,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:24,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:24,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 876 [2020-10-14 19:20:24,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:20:24,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-14 19:20:24,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:24,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:20:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-14 19:20:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 781 [2020-10-14 19:20:24,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:25,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:20:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:25,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:25,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:25,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:20:25,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:25,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:20:25,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:25,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:25,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:25,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:25,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:25,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:25,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:20:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:25,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:25,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:25,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:20:25,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:25,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:20:25,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:25,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:25,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:25,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:25,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:20:25,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 19:20:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:25,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:25,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:25,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 19:20:25,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:25,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 19:20:25,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:25,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:20:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 19:20:25,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-14 19:20:26,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884101063] [2020-10-14 19:20:26,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:20:26,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:20:26,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890872693] [2020-10-14 19:20:26,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:20:26,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:20:26,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:20:26,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:20:26,236 INFO L87 Difference]: Start difference. First operand 5082 states and 7548 transitions. Second operand 5 states. [2020-10-14 19:20:35,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:20:35,299 INFO L93 Difference]: Finished difference Result 15234 states and 22983 transitions. [2020-10-14 19:20:35,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:20:35,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 858 [2020-10-14 19:20:35,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:20:35,357 INFO L225 Difference]: With dead ends: 15234 [2020-10-14 19:20:35,357 INFO L226 Difference]: Without dead ends: 10158 [2020-10-14 19:20:35,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:20:35,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10158 states. [2020-10-14 19:20:35,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10158 to 10154. [2020-10-14 19:20:35,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10154 states. [2020-10-14 19:20:35,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10154 states to 10154 states and 13706 transitions. [2020-10-14 19:20:35,753 INFO L78 Accepts]: Start accepts. Automaton has 10154 states and 13706 transitions. Word has length 858 [2020-10-14 19:20:35,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:20:35,755 INFO L479 AbstractCegarLoop]: Abstraction has 10154 states and 13706 transitions. [2020-10-14 19:20:35,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:20:35,756 INFO L276 IsEmpty]: Start isEmpty. Operand 10154 states and 13706 transitions. [2020-10-14 19:20:35,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 902 [2020-10-14 19:20:35,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:20:35,787 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:20:35,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:20:35,788 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:20:35,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:20:35,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1791388048, now seen corresponding path program 1 times [2020-10-14 19:20:35,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:20:35,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501391711] [2020-10-14 19:20:35,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:20:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:36,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:36,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:38,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:41,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:41,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 917 [2020-10-14 19:20:41,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:20:41,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 19:20:41,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:41,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:41,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:20:41,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 19:20:41,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 781 [2020-10-14 19:20:41,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:41,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:20:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:41,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:41,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:41,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:20:41,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:41,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:20:41,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:41,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:41,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:41,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:20:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:41,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:41,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:41,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 19:20:41,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:41,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 19:20:41,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:41,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:41,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:20:41,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:41,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 19:20:41,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:42,124 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 121 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:20:42,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501391711] [2020-10-14 19:20:42,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:20:42,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:20:42,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737616367] [2020-10-14 19:20:42,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:20:42,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:20:42,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:20:42,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:20:42,127 INFO L87 Difference]: Start difference. First operand 10154 states and 13706 transitions. Second operand 6 states. [2020-10-14 19:20:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:20:51,663 INFO L93 Difference]: Finished difference Result 30416 states and 41778 transitions. [2020-10-14 19:20:51,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:20:51,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 901 [2020-10-14 19:20:51,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:20:51,747 INFO L225 Difference]: With dead ends: 30416 [2020-10-14 19:20:51,747 INFO L226 Difference]: Without dead ends: 20268 [2020-10-14 19:20:51,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:20:51,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20268 states. [2020-10-14 19:20:52,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20268 to 20264. [2020-10-14 19:20:52,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20264 states. [2020-10-14 19:20:52,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20264 states to 20264 states and 27084 transitions. [2020-10-14 19:20:52,283 INFO L78 Accepts]: Start accepts. Automaton has 20264 states and 27084 transitions. Word has length 901 [2020-10-14 19:20:52,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:20:52,285 INFO L479 AbstractCegarLoop]: Abstraction has 20264 states and 27084 transitions. [2020-10-14 19:20:52,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:20:52,285 INFO L276 IsEmpty]: Start isEmpty. Operand 20264 states and 27084 transitions. [2020-10-14 19:20:52,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1076 [2020-10-14 19:20:52,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:20:52,348 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:20:52,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:20:52,349 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:20:52,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:20:52,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1546845151, now seen corresponding path program 1 times [2020-10-14 19:20:52,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:20:52,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908420659] [2020-10-14 19:20:52,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:20:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:52,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:52,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:53,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:57,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:57,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1095 [2020-10-14 19:20:57,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:20:57,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-14 19:20:57,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:57,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:57,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:20:57,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 310 [2020-10-14 19:20:57,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 604 [2020-10-14 19:20:57,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:59,880 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2020-10-14 19:21:00,045 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-10-14 19:21:00,260 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2020-10-14 19:21:00,573 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 60 [2020-10-14 19:21:00,890 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 56 [2020-10-14 19:21:01,178 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 51 [2020-10-14 19:21:01,395 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 34 [2020-10-14 19:21:01,594 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2020-10-14 19:21:01,771 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2020-10-14 19:21:02,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:21:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:02,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:02,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:02,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:21:02,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:02,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:21:02,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:02,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:02,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:21:02,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:02,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:21:02,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:02,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:21:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:02,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:02,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:02,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 19:21:02,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:02,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:21:02,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:02,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:21:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:21:02,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:02,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 19:21:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:02,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:02,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:02,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-14 19:21:02,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:02,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-14 19:21:02,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:02,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:02,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:21:02,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:02,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 280 [2020-10-14 19:21:02,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:02,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:21:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:02,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:02,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:02,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 19:21:02,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:02,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 19:21:02,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:02,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:21:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:02,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 19:21:02,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:21:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 290 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 19:21:09,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908420659] [2020-10-14 19:21:09,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:21:09,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 19:21:09,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290455184] [2020-10-14 19:21:09,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 19:21:09,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:21:09,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 19:21:09,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:21:09,411 INFO L87 Difference]: Start difference. First operand 20264 states and 27084 transitions. Second operand 17 states. [2020-10-14 19:21:13,943 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-14 19:21:14,144 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-14 19:21:15,325 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 118 [2020-10-14 19:21:16,531 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 114 [2020-10-14 19:21:17,547 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 110 [2020-10-14 19:21:18,630 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 110 [2020-10-14 19:21:22,049 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-14 19:21:22,395 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-10-14 19:21:25,563 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2020-10-14 19:21:29,118 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-14 19:21:31,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:21:31,823 INFO L93 Difference]: Finished difference Result 41123 states and 55467 transitions. [2020-10-14 19:21:31,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 19:21:31,824 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1075 [2020-10-14 19:21:31,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:21:31,893 INFO L225 Difference]: With dead ends: 41123 [2020-10-14 19:21:31,893 INFO L226 Difference]: Without dead ends: 20865 [2020-10-14 19:21:31,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2020-10-14 19:21:31,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20865 states. [2020-10-14 19:21:32,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20865 to 20861. [2020-10-14 19:21:32,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20861 states. [2020-10-14 19:21:32,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20861 states to 20861 states and 27705 transitions. [2020-10-14 19:21:32,395 INFO L78 Accepts]: Start accepts. Automaton has 20861 states and 27705 transitions. Word has length 1075 [2020-10-14 19:21:32,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:21:32,397 INFO L479 AbstractCegarLoop]: Abstraction has 20861 states and 27705 transitions. [2020-10-14 19:21:32,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 19:21:32,397 INFO L276 IsEmpty]: Start isEmpty. Operand 20861 states and 27705 transitions. [2020-10-14 19:21:32,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1180 [2020-10-14 19:21:32,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:21:32,458 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:21:32,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:21:32,458 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:21:32,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:21:32,459 INFO L82 PathProgramCache]: Analyzing trace with hash 256604340, now seen corresponding path program 1 times [2020-10-14 19:21:32,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:21:32,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457705771] [2020-10-14 19:21:32,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:21:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:32,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:32,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:35,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:37,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:37,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1201 [2020-10-14 19:21:37,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:21:37,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-14 19:21:37,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:37,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:37,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:21:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 19:21:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 383 [2020-10-14 19:21:37,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:37,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:21:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:37,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:37,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:37,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:21:37,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:37,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:21:37,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:37,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:37,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:21:37,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:37,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:21:37,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:37,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:21:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:37,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:37,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:37,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 19:21:37,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:37,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:21:37,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:37,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:37,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:21:37,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:37,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:21:37,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:37,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 19:21:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:37,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:37,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:37,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:21:37,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:37,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:21:37,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:37,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:37,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:21:37,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:37,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:21:37,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:37,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 19:21:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:37,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:38,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:38,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-14 19:21:38,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:38,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-10-14 19:21:38,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:38,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:38,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:21:38,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:21:38,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 384 [2020-10-14 19:21:38,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:38,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:21:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:38,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:38,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:38,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 19:21:38,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:38,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 19:21:38,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:38,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:21:38,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:21:38,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 19:21:38,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:39,559 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 412 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 19:21:39,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457705771] [2020-10-14 19:21:39,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:21:39,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:21:39,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608880480] [2020-10-14 19:21:39,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:21:39,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:21:39,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:21:39,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:21:39,562 INFO L87 Difference]: Start difference. First operand 20861 states and 27705 transitions. Second operand 8 states. [2020-10-14 19:21:50,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:21:50,331 INFO L93 Difference]: Finished difference Result 51273 states and 69874 transitions. [2020-10-14 19:21:50,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:21:50,332 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1179 [2020-10-14 19:21:50,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:21:50,445 INFO L225 Difference]: With dead ends: 51273 [2020-10-14 19:21:50,445 INFO L226 Difference]: Without dead ends: 30418 [2020-10-14 19:21:50,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:21:50,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30418 states. [2020-10-14 19:21:51,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30418 to 30331. [2020-10-14 19:21:51,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30331 states. [2020-10-14 19:21:51,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30331 states to 30331 states and 38116 transitions. [2020-10-14 19:21:51,110 INFO L78 Accepts]: Start accepts. Automaton has 30331 states and 38116 transitions. Word has length 1179 [2020-10-14 19:21:51,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:21:51,111 INFO L479 AbstractCegarLoop]: Abstraction has 30331 states and 38116 transitions. [2020-10-14 19:21:51,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:21:51,111 INFO L276 IsEmpty]: Start isEmpty. Operand 30331 states and 38116 transitions. [2020-10-14 19:21:51,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1293 [2020-10-14 19:21:51,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:21:51,179 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:21:51,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:21:51,179 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:21:51,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:21:51,180 INFO L82 PathProgramCache]: Analyzing trace with hash 404418068, now seen corresponding path program 1 times [2020-10-14 19:21:51,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:21:51,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667769564] [2020-10-14 19:21:51,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:21:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:51,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:51,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:52,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:56,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:56,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1314 [2020-10-14 19:21:56,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:21:56,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 19:21:56,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:56,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:56,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:21:56,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 19:21:56,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 507 [2020-10-14 19:21:56,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:56,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:21:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:56,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:56,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:56,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:21:56,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:56,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:21:56,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:56,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:56,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:21:56,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:56,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:21:56,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:56,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:21:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:56,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:56,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:56,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 19:21:56,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:56,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:21:56,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:56,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:56,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:21:56,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:56,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 19:21:56,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:21:56,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 19:21:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:56,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:56,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:56,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:56,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 19:21:56,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:21:56,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 19:21:56,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:56,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:21:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 19:21:56,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:56,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-14 19:21:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:57,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:57,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:57,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-14 19:21:57,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:57,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-10-14 19:21:57,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:57,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:21:57,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:21:57,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 384 [2020-10-14 19:21:57,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:57,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:21:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:57,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:58,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:58,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 19:21:58,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:58,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-14 19:21:58,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:58,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:58,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:21:58,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:21:58,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 19:21:58,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 633 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 19:21:59,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667769564] [2020-10-14 19:21:59,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:21:59,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:21:59,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012056613] [2020-10-14 19:21:59,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:21:59,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:21:59,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:21:59,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:21:59,300 INFO L87 Difference]: Start difference. First operand 30331 states and 38116 transitions. Second operand 8 states. [2020-10-14 19:22:10,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:22:10,685 INFO L93 Difference]: Finished difference Result 61083 states and 77616 transitions. [2020-10-14 19:22:10,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 19:22:10,686 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1292 [2020-10-14 19:22:10,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:22:10,798 INFO L225 Difference]: With dead ends: 61083 [2020-10-14 19:22:10,798 INFO L226 Difference]: Without dead ends: 30758 [2020-10-14 19:22:10,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-14 19:22:10,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30758 states. [2020-10-14 19:22:11,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30758 to 29822. [2020-10-14 19:22:11,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29822 states. [2020-10-14 19:22:11,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29822 states to 29822 states and 35572 transitions. [2020-10-14 19:22:11,412 INFO L78 Accepts]: Start accepts. Automaton has 29822 states and 35572 transitions. Word has length 1292 [2020-10-14 19:22:11,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:22:11,413 INFO L479 AbstractCegarLoop]: Abstraction has 29822 states and 35572 transitions. [2020-10-14 19:22:11,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:22:11,414 INFO L276 IsEmpty]: Start isEmpty. Operand 29822 states and 35572 transitions. [2020-10-14 19:22:11,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1330 [2020-10-14 19:22:11,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:22:11,489 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:22:11,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:22:11,490 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:22:11,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:22:11,492 INFO L82 PathProgramCache]: Analyzing trace with hash 76395647, now seen corresponding path program 1 times [2020-10-14 19:22:11,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:22:11,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176396059] [2020-10-14 19:22:11,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:22:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:11,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:12,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:12,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:16,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:16,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1351 [2020-10-14 19:22:16,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:22:16,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5155 [2020-10-14 19:22:16,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:16,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:16,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:22:16,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 19:22:16,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 506 [2020-10-14 19:22:16,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:17,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:22:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:17,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:17,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:17,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:22:17,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:17,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:22:17,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:17,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:17,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:22:17,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:17,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:22:17,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:17,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:22:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:17,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:17,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:17,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 19:22:17,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:17,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 19:22:17,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:17,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:17,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:22:17,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:17,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 19:22:17,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:17,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 19:22:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:17,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:18,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:18,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 510 [2020-10-14 19:22:18,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:18,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1064 [2020-10-14 19:22:18,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:18,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:18,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:22:18,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:22:18,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 510 [2020-10-14 19:22:18,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:18,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:22:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:18,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:18,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:18,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-14 19:22:18,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:18,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-14 19:22:18,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:18,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 19:22:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:22:18,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 283 [2020-10-14 19:22:18,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:18,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:22:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:18,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:18,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:18,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 19:22:18,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:18,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 19:22:18,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:18,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:18,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:22:18,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:22:18,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 19:22:18,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 586 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 19:22:20,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176396059] [2020-10-14 19:22:20,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:22:20,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:22:20,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206614683] [2020-10-14 19:22:20,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:22:20,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:22:20,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:22:20,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:22:20,080 INFO L87 Difference]: Start difference. First operand 29822 states and 35572 transitions. Second operand 8 states. [2020-10-14 19:22:31,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:22:31,281 INFO L93 Difference]: Finished difference Result 74452 states and 91479 transitions. [2020-10-14 19:22:31,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 19:22:31,282 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1329 [2020-10-14 19:22:31,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:22:31,419 INFO L225 Difference]: With dead ends: 74452 [2020-10-14 19:22:31,419 INFO L226 Difference]: Without dead ends: 44636 [2020-10-14 19:22:31,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:22:31,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44636 states. [2020-10-14 19:22:32,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44636 to 44519. [2020-10-14 19:22:32,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44519 states. [2020-10-14 19:22:32,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44519 states to 44519 states and 52383 transitions. [2020-10-14 19:22:32,265 INFO L78 Accepts]: Start accepts. Automaton has 44519 states and 52383 transitions. Word has length 1329 [2020-10-14 19:22:32,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:22:32,266 INFO L479 AbstractCegarLoop]: Abstraction has 44519 states and 52383 transitions. [2020-10-14 19:22:32,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:22:32,266 INFO L276 IsEmpty]: Start isEmpty. Operand 44519 states and 52383 transitions. [2020-10-14 19:22:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1632 [2020-10-14 19:22:32,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:22:32,366 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:22:32,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:22:32,366 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:22:32,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:22:32,367 INFO L82 PathProgramCache]: Analyzing trace with hash -805199907, now seen corresponding path program 1 times [2020-10-14 19:22:32,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:22:32,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125888840] [2020-10-14 19:22:32,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:22:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:32,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:32,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:32,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:33,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:33,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:33,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:33,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:37,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:37,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1659 [2020-10-14 19:22:37,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 19:22:37,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 19:22:37,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:37,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:37,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:22:37,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 492 [2020-10-14 19:22:37,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 383 [2020-10-14 19:22:37,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:37,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:22:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:37,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:37,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:37,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:22:37,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:37,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:22:37,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:37,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:37,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:22:37,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:37,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:22:37,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:37,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:22:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:37,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:37,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:37,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:22:37,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:37,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:22:37,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:37,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:37,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:22:37,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:37,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:22:37,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:22:37,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 19:22:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:37,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:37,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:37,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 19:22:37,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:37,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 19:22:37,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:37,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:37,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:22:37,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:37,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:22:37,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:22:37,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-14 19:22:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:37,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:37,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:37,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 19:22:37,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:37,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:22:37,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:38,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:38,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:22:38,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:38,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:22:38,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:22:38,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-10-14 19:22:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:38,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:38,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:38,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 19:22:38,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:38,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 19:22:38,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:38,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:38,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:22:38,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:38,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:22:38,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:22:38,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-14 19:22:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:38,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:38,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:38,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 19:22:38,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:38,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 19:22:38,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:38,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:22:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 19:22:38,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:38,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2020-10-14 19:22:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:38,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:38,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:38,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-14 19:22:38,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:38,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-14 19:22:38,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:38,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:38,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:22:38,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:22:38,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 384 [2020-10-14 19:22:38,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:38,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:22:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:39,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:39,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:39,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 19:22:39,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:39,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 19:22:39,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:39,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:22:39,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:22:39,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 19:22:39,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 1313 proven. 2 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2020-10-14 19:22:40,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125888840] [2020-10-14 19:22:40,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:22:40,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:22:40,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441509931] [2020-10-14 19:22:40,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:22:40,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:22:40,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:22:40,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:22:40,734 INFO L87 Difference]: Start difference. First operand 44519 states and 52383 transitions. Second operand 8 states.