/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/toy2.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 10:18:12,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:18:12,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:18:12,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:18:12,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:18:12,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:18:12,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:18:12,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:18:12,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:18:12,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:18:12,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:18:12,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:18:12,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:18:12,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:18:12,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:18:12,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:18:12,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:18:12,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:18:12,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:18:12,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:18:12,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:18:12,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:18:12,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:18:12,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:18:12,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:18:12,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:18:12,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:18:12,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:18:12,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:18:12,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:18:12,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:18:12,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:18:12,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:18:12,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:18:12,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:18:12,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:18:12,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:18:12,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:18:12,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:18:12,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:18:12,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:18:12,659 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 10:18:12,681 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:18:12,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:18:12,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:18:12,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:18:12,683 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:18:12,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:18:12,684 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:18:12,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:18:12,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:18:12,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:18:12,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:18:12,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:18:12,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:18:12,685 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:18:12,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:18:12,685 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:18:12,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:18:12,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:18:12,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:18:12,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:18:12,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:18:12,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:18:12,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:18:12,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:18:12,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:18:12,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:18:12,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:18:12,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:18:12,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:18:12,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 10:18:12,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:18:12,990 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:18:12,994 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:18:12,995 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:18:12,996 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:18:12,997 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/toy2.cil.c [2020-10-14 10:18:13,057 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63004ec36/0df2770c60584764a777ac047b0cc1a1/FLAG51975140e [2020-10-14 10:18:13,540 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:18:13,541 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/toy2.cil.c [2020-10-14 10:18:13,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63004ec36/0df2770c60584764a777ac047b0cc1a1/FLAG51975140e [2020-10-14 10:18:13,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63004ec36/0df2770c60584764a777ac047b0cc1a1 [2020-10-14 10:18:13,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:18:13,916 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:18:13,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:18:13,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:18:13,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:18:13,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:18:13" (1/1) ... [2020-10-14 10:18:13,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ab3a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:13, skipping insertion in model container [2020-10-14 10:18:13,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:18:13" (1/1) ... [2020-10-14 10:18:13,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:18:13,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:18:14,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:18:14,179 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:18:14,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:18:14,374 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:18:14,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:14 WrapperNode [2020-10-14 10:18:14,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:18:14,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:18:14,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:18:14,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:18:14,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:14" (1/1) ... [2020-10-14 10:18:14,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:14" (1/1) ... [2020-10-14 10:18:14,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:14" (1/1) ... [2020-10-14 10:18:14,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:14" (1/1) ... [2020-10-14 10:18:14,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:14" (1/1) ... [2020-10-14 10:18:14,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:14" (1/1) ... [2020-10-14 10:18:14,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:14" (1/1) ... [2020-10-14 10:18:14,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:18:14,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:18:14,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:18:14,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:18:14,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:18:14,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:18:14,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:18:14,507 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-14 10:18:14,507 INFO L138 BoogieDeclarations]: Found implementation of procedure write_loop [2020-10-14 10:18:14,507 INFO L138 BoogieDeclarations]: Found implementation of procedure compute1 [2020-10-14 10:18:14,508 INFO L138 BoogieDeclarations]: Found implementation of procedure compute2 [2020-10-14 10:18:14,508 INFO L138 BoogieDeclarations]: Found implementation of procedure write_back [2020-10-14 10:18:14,508 INFO L138 BoogieDeclarations]: Found implementation of procedure read [2020-10-14 10:18:14,508 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-14 10:18:14,508 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-14 10:18:14,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:18:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:18:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:18:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-14 10:18:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure write_loop [2020-10-14 10:18:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure compute1 [2020-10-14 10:18:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure compute2 [2020-10-14 10:18:14,510 INFO L130 BoogieDeclarations]: Found specification of procedure write_back [2020-10-14 10:18:14,510 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 10:18:14,510 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-14 10:18:14,510 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-14 10:18:14,510 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:18:14,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:18:14,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:18:15,079 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:18:15,080 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-14 10:18:15,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:18:15 BoogieIcfgContainer [2020-10-14 10:18:15,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:18:15,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:18:15,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:18:15,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:18:15,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:18:13" (1/3) ... [2020-10-14 10:18:15,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ab9d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:18:15, skipping insertion in model container [2020-10-14 10:18:15,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:18:14" (2/3) ... [2020-10-14 10:18:15,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ab9d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:18:15, skipping insertion in model container [2020-10-14 10:18:15,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:18:15" (3/3) ... [2020-10-14 10:18:15,096 INFO L109 eAbstractionObserver]: Analyzing ICFG toy2.cil.c [2020-10-14 10:18:15,107 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:18:15,116 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:18:15,131 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:18:15,158 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:18:15,159 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:18:15,159 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:18:15,159 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:18:15,159 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:18:15,160 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:18:15,160 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:18:15,160 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:18:15,185 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2020-10-14 10:18:15,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 10:18:15,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:15,196 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] [2020-10-14 10:18:15,196 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:15,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:15,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1201692838, now seen corresponding path program 1 times [2020-10-14 10:18:15,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:15,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424440675] [2020-10-14 10:18:15,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:15,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:15,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:15,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:15,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:16,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:16,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:16,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:16,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:16,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:17,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:18,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:19,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:19,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 10:18:19,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 10:18:19,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4441 [2020-10-14 10:18:19,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:19,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:19,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:18:19,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 10:18:19,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 10:18:19,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 10:18:20,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:20,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:20,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:20,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:20,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:20,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:18:20,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:20,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:20,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:20,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:20,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:20,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:20,095 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 10:18:20,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424440675] [2020-10-14 10:18:20,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:20,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:20,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33014690] [2020-10-14 10:18:20,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:20,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:20,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:20,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:20,122 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 4 states. [2020-10-14 10:18:21,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:21,179 INFO L93 Difference]: Finished difference Result 340 states and 591 transitions. [2020-10-14 10:18:21,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:18:21,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-14 10:18:21,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:21,199 INFO L225 Difference]: With dead ends: 340 [2020-10-14 10:18:21,199 INFO L226 Difference]: Without dead ends: 207 [2020-10-14 10:18:21,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:21,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-14 10:18:21,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 181. [2020-10-14 10:18:21,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-14 10:18:21,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 302 transitions. [2020-10-14 10:18:21,291 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 302 transitions. Word has length 46 [2020-10-14 10:18:21,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:21,291 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 302 transitions. [2020-10-14 10:18:21,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:21,292 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 302 transitions. [2020-10-14 10:18:21,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 10:18:21,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:21,295 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] [2020-10-14 10:18:21,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:18:21,296 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:21,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:21,297 INFO L82 PathProgramCache]: Analyzing trace with hash 982838120, now seen corresponding path program 1 times [2020-10-14 10:18:21,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:21,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183864612] [2020-10-14 10:18:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:21,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:21,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:21,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:21,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:21,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:21,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:21,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:22,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:22,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:24,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:24,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 10:18:24,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 10:18:24,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2908 [2020-10-14 10:18:24,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:24,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:24,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:18:24,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 10:18:24,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:24,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:24,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:24,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:24,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:24,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:24,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:18:24,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:24,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:24,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:24,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:24,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:24,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:24,414 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 10:18:24,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183864612] [2020-10-14 10:18:24,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:24,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:24,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552230828] [2020-10-14 10:18:24,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:24,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:24,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:24,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:24,424 INFO L87 Difference]: Start difference. First operand 181 states and 302 transitions. Second operand 4 states. [2020-10-14 10:18:25,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:25,559 INFO L93 Difference]: Finished difference Result 502 states and 840 transitions. [2020-10-14 10:18:25,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:18:25,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-14 10:18:25,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:25,564 INFO L225 Difference]: With dead ends: 502 [2020-10-14 10:18:25,565 INFO L226 Difference]: Without dead ends: 345 [2020-10-14 10:18:25,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:25,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-14 10:18:25,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 324. [2020-10-14 10:18:25,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-10-14 10:18:25,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 541 transitions. [2020-10-14 10:18:25,614 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 541 transitions. Word has length 46 [2020-10-14 10:18:25,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:25,614 INFO L479 AbstractCegarLoop]: Abstraction has 324 states and 541 transitions. [2020-10-14 10:18:25,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:25,614 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 541 transitions. [2020-10-14 10:18:25,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 10:18:25,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:25,617 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] [2020-10-14 10:18:25,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:18:25,618 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:25,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:25,618 INFO L82 PathProgramCache]: Analyzing trace with hash 613152383, now seen corresponding path program 1 times [2020-10-14 10:18:25,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:25,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995372732] [2020-10-14 10:18:25,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:25,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:25,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:25,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:25,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:25,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:25,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:26,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:26,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:27,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:27,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 10:18:27,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 10:18:27,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1577 [2020-10-14 10:18:27,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:27,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:27,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:18:27,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:27,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 10:18:27,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:27,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:27,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:27,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:27,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:27,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:27,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:18:27,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:27,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:27,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:27,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:27,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:27,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:27,363 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 10:18:27,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995372732] [2020-10-14 10:18:27,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:27,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:27,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79406105] [2020-10-14 10:18:27,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:27,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:27,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:27,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:27,365 INFO L87 Difference]: Start difference. First operand 324 states and 541 transitions. Second operand 4 states. [2020-10-14 10:18:28,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:28,198 INFO L93 Difference]: Finished difference Result 811 states and 1324 transitions. [2020-10-14 10:18:28,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:18:28,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-14 10:18:28,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:28,204 INFO L225 Difference]: With dead ends: 811 [2020-10-14 10:18:28,204 INFO L226 Difference]: Without dead ends: 509 [2020-10-14 10:18:28,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:28,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-10-14 10:18:28,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 478. [2020-10-14 10:18:28,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-10-14 10:18:28,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 781 transitions. [2020-10-14 10:18:28,273 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 781 transitions. Word has length 46 [2020-10-14 10:18:28,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:28,276 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 781 transitions. [2020-10-14 10:18:28,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:28,276 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 781 transitions. [2020-10-14 10:18:28,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 10:18:28,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:28,285 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] [2020-10-14 10:18:28,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:18:28,285 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:28,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:28,286 INFO L82 PathProgramCache]: Analyzing trace with hash 103679293, now seen corresponding path program 1 times [2020-10-14 10:18:28,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:28,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738976278] [2020-10-14 10:18:28,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:28,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:28,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:28,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:28,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:28,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:28,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:28,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:28,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:29,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:29,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 10:18:29,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 10:18:29,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1432 [2020-10-14 10:18:29,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:29,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:29,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:18:29,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:29,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 10:18:29,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:29,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:29,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:29,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:29,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:29,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:29,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:18:29,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:29,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:29,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:29,886 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 10:18:29,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738976278] [2020-10-14 10:18:29,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:29,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:29,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977729362] [2020-10-14 10:18:29,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:29,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:29,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:29,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:29,889 INFO L87 Difference]: Start difference. First operand 478 states and 781 transitions. Second operand 4 states. [2020-10-14 10:18:30,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:30,514 INFO L93 Difference]: Finished difference Result 987 states and 1616 transitions. [2020-10-14 10:18:30,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:18:30,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-14 10:18:30,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:30,522 INFO L225 Difference]: With dead ends: 987 [2020-10-14 10:18:30,522 INFO L226 Difference]: Without dead ends: 560 [2020-10-14 10:18:30,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:30,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-10-14 10:18:30,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 516. [2020-10-14 10:18:30,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-10-14 10:18:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 845 transitions. [2020-10-14 10:18:30,573 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 845 transitions. Word has length 46 [2020-10-14 10:18:30,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:30,574 INFO L479 AbstractCegarLoop]: Abstraction has 516 states and 845 transitions. [2020-10-14 10:18:30,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:30,575 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 845 transitions. [2020-10-14 10:18:30,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 10:18:30,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:30,578 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] [2020-10-14 10:18:30,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:18:30,578 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:30,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:30,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1484668609, now seen corresponding path program 1 times [2020-10-14 10:18:30,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:30,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602806723] [2020-10-14 10:18:30,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:30,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:30,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:30,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:30,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:30,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:30,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:31,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:31,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:31,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 10:18:31,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:18:31,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1159 [2020-10-14 10:18:31,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:31,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:31,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:18:31,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:31,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 10:18:31,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:31,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:31,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:31,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:31,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:31,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:31,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:18:31,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:31,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:31,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:31,893 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 10:18:31,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602806723] [2020-10-14 10:18:31,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:31,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:31,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660312493] [2020-10-14 10:18:31,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:31,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:31,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:31,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:31,895 INFO L87 Difference]: Start difference. First operand 516 states and 845 transitions. Second operand 4 states. [2020-10-14 10:18:32,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:32,570 INFO L93 Difference]: Finished difference Result 1074 states and 1749 transitions. [2020-10-14 10:18:32,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:18:32,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-14 10:18:32,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:32,578 INFO L225 Difference]: With dead ends: 1074 [2020-10-14 10:18:32,578 INFO L226 Difference]: Without dead ends: 593 [2020-10-14 10:18:32,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:32,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-10-14 10:18:32,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 550. [2020-10-14 10:18:32,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-10-14 10:18:32,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 899 transitions. [2020-10-14 10:18:32,633 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 899 transitions. Word has length 46 [2020-10-14 10:18:32,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:32,633 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 899 transitions. [2020-10-14 10:18:32,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:32,633 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 899 transitions. [2020-10-14 10:18:32,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 10:18:32,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:32,641 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] [2020-10-14 10:18:32,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 10:18:32,643 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:32,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:32,643 INFO L82 PathProgramCache]: Analyzing trace with hash 120389503, now seen corresponding path program 1 times [2020-10-14 10:18:32,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:32,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423714752] [2020-10-14 10:18:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:32,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:32,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:32,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:32,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:32,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:32,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:33,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:33,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:34,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:34,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 10:18:34,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 10:18:34,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1672 [2020-10-14 10:18:34,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:34,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:34,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:18:34,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 10:18:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:18:34,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:34,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:34,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:34,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:34,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:34,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:34,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:18:34,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:34,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:34,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:34,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:34,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:34,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:34,433 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 10:18:34,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423714752] [2020-10-14 10:18:34,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:34,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:34,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650203011] [2020-10-14 10:18:34,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:34,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:34,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:34,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:34,436 INFO L87 Difference]: Start difference. First operand 550 states and 899 transitions. Second operand 4 states. [2020-10-14 10:18:35,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:35,049 INFO L93 Difference]: Finished difference Result 1087 states and 1761 transitions. [2020-10-14 10:18:35,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:18:35,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-14 10:18:35,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:35,053 INFO L225 Difference]: With dead ends: 1087 [2020-10-14 10:18:35,054 INFO L226 Difference]: Without dead ends: 593 [2020-10-14 10:18:35,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:35,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-10-14 10:18:35,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 550. [2020-10-14 10:18:35,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-10-14 10:18:35,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 889 transitions. [2020-10-14 10:18:35,091 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 889 transitions. Word has length 46 [2020-10-14 10:18:35,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:35,091 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 889 transitions. [2020-10-14 10:18:35,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:35,092 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 889 transitions. [2020-10-14 10:18:35,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 10:18:35,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:35,093 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] [2020-10-14 10:18:35,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 10:18:35,093 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:35,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:35,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1873755203, now seen corresponding path program 1 times [2020-10-14 10:18:35,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:35,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96240496] [2020-10-14 10:18:35,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:35,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:35,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:35,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:35,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:35,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:35,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:36,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:36,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 10:18:36,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:18:36,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 930 [2020-10-14 10:18:36,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:36,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:18:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 10:18:36,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:36,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:36,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:36,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:36,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:36,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:36,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:18:36,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:36,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:36,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:36,168 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 10:18:36,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96240496] [2020-10-14 10:18:36,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:36,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:36,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432015384] [2020-10-14 10:18:36,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:36,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:36,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:36,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:36,171 INFO L87 Difference]: Start difference. First operand 550 states and 889 transitions. Second operand 4 states. [2020-10-14 10:18:36,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:36,939 INFO L93 Difference]: Finished difference Result 1115 states and 1791 transitions. [2020-10-14 10:18:36,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:18:36,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-14 10:18:36,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:36,944 INFO L225 Difference]: With dead ends: 1115 [2020-10-14 10:18:36,944 INFO L226 Difference]: Without dead ends: 593 [2020-10-14 10:18:36,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:36,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-10-14 10:18:36,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 550. [2020-10-14 10:18:36,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-10-14 10:18:36,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 879 transitions. [2020-10-14 10:18:36,982 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 879 transitions. Word has length 46 [2020-10-14 10:18:36,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:36,983 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 879 transitions. [2020-10-14 10:18:36,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:36,983 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 879 transitions. [2020-10-14 10:18:36,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 10:18:36,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:36,984 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] [2020-10-14 10:18:36,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 10:18:36,984 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:36,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:36,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1851122949, now seen corresponding path program 1 times [2020-10-14 10:18:36,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:36,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296289630] [2020-10-14 10:18:36,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:37,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:37,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:37,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:37,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:37,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:37,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:37,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:37,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 10:18:37,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:18:37,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 966 [2020-10-14 10:18:37,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:37,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:37,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:18:37,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 10:18:37,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:38,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:38,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:38,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:38,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:38,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:38,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:18:38,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:38,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:38,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:38,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:38,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:38,083 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 10:18:38,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296289630] [2020-10-14 10:18:38,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:38,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:38,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181985674] [2020-10-14 10:18:38,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:38,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:38,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:38,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:38,085 INFO L87 Difference]: Start difference. First operand 550 states and 879 transitions. Second operand 4 states. [2020-10-14 10:18:38,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:38,775 INFO L93 Difference]: Finished difference Result 1107 states and 1760 transitions. [2020-10-14 10:18:38,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:18:38,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-14 10:18:38,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:38,780 INFO L225 Difference]: With dead ends: 1107 [2020-10-14 10:18:38,780 INFO L226 Difference]: Without dead ends: 595 [2020-10-14 10:18:38,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:38,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2020-10-14 10:18:38,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 550. [2020-10-14 10:18:38,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-10-14 10:18:38,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 863 transitions. [2020-10-14 10:18:38,817 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 863 transitions. Word has length 46 [2020-10-14 10:18:38,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:38,817 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 863 transitions. [2020-10-14 10:18:38,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:38,817 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 863 transitions. [2020-10-14 10:18:38,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 10:18:38,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:38,818 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] [2020-10-14 10:18:38,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 10:18:38,819 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:38,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:38,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1428421123, now seen corresponding path program 1 times [2020-10-14 10:18:38,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:38,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967273750] [2020-10-14 10:18:38,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:38,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:38,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:38,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:38,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:39,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:39,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:39,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 10:18:39,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:18:39,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 931 [2020-10-14 10:18:39,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:39,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:39,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:18:39,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:39,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:18:39,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:39,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:39,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:39,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:39,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:39,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:39,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:18:39,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:39,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:39,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:39,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:39,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:39,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:18:39,882 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 10:18:39,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967273750] [2020-10-14 10:18:39,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:39,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:39,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280769501] [2020-10-14 10:18:39,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:39,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:39,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:39,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:39,892 INFO L87 Difference]: Start difference. First operand 550 states and 863 transitions. Second operand 4 states. [2020-10-14 10:18:40,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:40,483 INFO L93 Difference]: Finished difference Result 1117 states and 1743 transitions. [2020-10-14 10:18:40,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:18:40,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-14 10:18:40,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:40,487 INFO L225 Difference]: With dead ends: 1117 [2020-10-14 10:18:40,488 INFO L226 Difference]: Without dead ends: 593 [2020-10-14 10:18:40,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:40,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-10-14 10:18:40,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 550. [2020-10-14 10:18:40,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-10-14 10:18:40,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 853 transitions. [2020-10-14 10:18:40,526 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 853 transitions. Word has length 46 [2020-10-14 10:18:40,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:40,527 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 853 transitions. [2020-10-14 10:18:40,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:40,527 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 853 transitions. [2020-10-14 10:18:40,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 10:18:40,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:40,528 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] [2020-10-14 10:18:40,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 10:18:40,528 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:40,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:40,529 INFO L82 PathProgramCache]: Analyzing trace with hash -726821249, now seen corresponding path program 1 times [2020-10-14 10:18:40,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:40,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177981213] [2020-10-14 10:18:40,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:40,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:40,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:40,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:40,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:40,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:41,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:41,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 10:18:41,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:18:41,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-10-14 10:18:41,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:41,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:41,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:18:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 10:18:41,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:41,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:41,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:41,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:41,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:41,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:41,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:18:41,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:41,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:41,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:41,396 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 10:18:41,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177981213] [2020-10-14 10:18:41,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:41,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:41,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001715666] [2020-10-14 10:18:41,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:41,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:41,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:41,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:41,398 INFO L87 Difference]: Start difference. First operand 550 states and 853 transitions. Second operand 4 states. [2020-10-14 10:18:41,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:41,998 INFO L93 Difference]: Finished difference Result 1101 states and 1694 transitions. [2020-10-14 10:18:42,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:18:42,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-14 10:18:42,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:42,006 INFO L225 Difference]: With dead ends: 1101 [2020-10-14 10:18:42,007 INFO L226 Difference]: Without dead ends: 601 [2020-10-14 10:18:42,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:42,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-10-14 10:18:42,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 550. [2020-10-14 10:18:42,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-10-14 10:18:42,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 833 transitions. [2020-10-14 10:18:42,049 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 833 transitions. Word has length 46 [2020-10-14 10:18:42,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:42,049 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 833 transitions. [2020-10-14 10:18:42,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:42,049 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 833 transitions. [2020-10-14 10:18:42,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 10:18:42,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:42,050 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] [2020-10-14 10:18:42,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 10:18:42,051 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:42,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:42,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1879202305, now seen corresponding path program 1 times [2020-10-14 10:18:42,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:42,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031735397] [2020-10-14 10:18:42,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:42,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:42,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:42,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:42,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:42,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:42,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 10:18:42,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:18:42,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 814 [2020-10-14 10:18:42,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:42,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:42,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:18:42,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:42,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:18:42,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:42,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:42,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:42,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:42,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:42,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:42,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:18:42,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:42,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:42,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:42,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:42,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:42,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:42,971 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 10:18:42,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031735397] [2020-10-14 10:18:42,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:42,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:18:42,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11017895] [2020-10-14 10:18:42,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:18:42,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:42,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:18:42,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:18:42,973 INFO L87 Difference]: Start difference. First operand 550 states and 833 transitions. Second operand 4 states. [2020-10-14 10:18:43,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:43,582 INFO L93 Difference]: Finished difference Result 1119 states and 1687 transitions. [2020-10-14 10:18:43,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:18:43,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-14 10:18:43,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:43,586 INFO L225 Difference]: With dead ends: 1119 [2020-10-14 10:18:43,586 INFO L226 Difference]: Without dead ends: 593 [2020-10-14 10:18:43,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:43,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-10-14 10:18:43,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 550. [2020-10-14 10:18:43,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-10-14 10:18:43,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 793 transitions. [2020-10-14 10:18:43,622 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 793 transitions. Word has length 46 [2020-10-14 10:18:43,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:43,622 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 793 transitions. [2020-10-14 10:18:43,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:18:43,623 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 793 transitions. [2020-10-14 10:18:43,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 10:18:43,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:43,624 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] [2020-10-14 10:18:43,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 10:18:43,624 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:43,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:43,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1336313469, now seen corresponding path program 1 times [2020-10-14 10:18:43,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:43,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741551897] [2020-10-14 10:18:43,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:43,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:43,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:43,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:43,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:43,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 10:18:43,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:18:43,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-14 10:18:43,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:43,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:43,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 10:18:43,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:18:43,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 10:18:43,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:44,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:44,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:44,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:44,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:44,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:44,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:18:44,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:44,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:44,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:44,022 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 10:18:44,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741551897] [2020-10-14 10:18:44,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:18:44,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:18:44,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387121404] [2020-10-14 10:18:44,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:18:44,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:44,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:18:44,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:44,025 INFO L87 Difference]: Start difference. First operand 550 states and 793 transitions. Second operand 5 states. [2020-10-14 10:18:45,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:45,193 INFO L93 Difference]: Finished difference Result 1502 states and 2197 transitions. [2020-10-14 10:18:45,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 10:18:45,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-10-14 10:18:45,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:45,207 INFO L225 Difference]: With dead ends: 1502 [2020-10-14 10:18:45,207 INFO L226 Difference]: Without dead ends: 988 [2020-10-14 10:18:45,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 10:18:45,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2020-10-14 10:18:45,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 885. [2020-10-14 10:18:45,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2020-10-14 10:18:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1267 transitions. [2020-10-14 10:18:45,306 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1267 transitions. Word has length 46 [2020-10-14 10:18:45,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:45,306 INFO L479 AbstractCegarLoop]: Abstraction has 885 states and 1267 transitions. [2020-10-14 10:18:45,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:18:45,307 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1267 transitions. [2020-10-14 10:18:45,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 10:18:45,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:45,309 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:18:45,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 10:18:45,309 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:45,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:45,310 INFO L82 PathProgramCache]: Analyzing trace with hash 168007946, now seen corresponding path program 1 times [2020-10-14 10:18:45,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:45,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675794036] [2020-10-14 10:18:45,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:45,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:45,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:45,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:45,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:45,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:45,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:46,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:47,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:47,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:48,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:50,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:50,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 10:18:50,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 10:18:50,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 10:18:50,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:50,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:50,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:18:50,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 10:18:50,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 10:18:50,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:50,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:50,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:50,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:50,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:50,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:50,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:18:50,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:50,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:50,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:50,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:18:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:50,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:50,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:50,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:18:50,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:50,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:18:50,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:50,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:18:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 10:18:50,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:50,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 10:18:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:50,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:50,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:50,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 10:18:50,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:50,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:18:50,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:50,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 10:18:50,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:50,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:18:50,463 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 10:18:50,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675794036] [2020-10-14 10:18:50,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:18:50,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 10:18:50,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766748210] [2020-10-14 10:18:50,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:18:50,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:50,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:18:50,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:18:50,466 INFO L87 Difference]: Start difference. First operand 885 states and 1267 transitions. Second operand 5 states. [2020-10-14 10:18:51,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:51,646 INFO L93 Difference]: Finished difference Result 2410 states and 3559 transitions. [2020-10-14 10:18:51,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 10:18:51,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-14 10:18:51,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:51,652 INFO L225 Difference]: With dead ends: 2410 [2020-10-14 10:18:51,653 INFO L226 Difference]: Without dead ends: 977 [2020-10-14 10:18:51,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 10:18:51,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2020-10-14 10:18:51,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 851. [2020-10-14 10:18:51,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 851 states. [2020-10-14 10:18:51,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1222 transitions. [2020-10-14 10:18:51,716 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1222 transitions. Word has length 80 [2020-10-14 10:18:51,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:51,717 INFO L479 AbstractCegarLoop]: Abstraction has 851 states and 1222 transitions. [2020-10-14 10:18:51,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:18:51,717 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1222 transitions. [2020-10-14 10:18:51,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 10:18:51,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:51,720 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:18:51,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 10:18:51,721 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:51,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:51,721 INFO L82 PathProgramCache]: Analyzing trace with hash 342871604, now seen corresponding path program 1 times [2020-10-14 10:18:51,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:51,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927079118] [2020-10-14 10:18:51,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:51,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:51,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:51,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:51,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:51,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:51,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:51,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:52,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:52,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:53,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:55,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:55,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:56,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:56,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 10:18:56,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 10:18:56,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 10:18:56,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:56,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:56,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:18:56,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 10:18:56,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 10:18:56,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:56,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:18:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:56,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:56,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:56,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:18:56,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:56,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:18:56,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:56,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:56,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:56,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:56,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:56,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:56,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:18:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:56,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:56,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:56,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:56,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:18:56,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:18:56,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 10:18:56,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:56,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:18:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 10:18:56,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:56,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:18:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:56,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:56,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:56,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:18:56,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:56,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:18:56,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:56,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:56,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:56,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:56,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:56,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:18:56,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 10:18:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:56,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:56,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:56,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 10:18:56,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:56,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:18:56,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:56,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:56,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:18:56,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:18:56,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:18:56,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:57,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 10:18:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:57,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:57,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:18:57,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:18:57,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:18:57,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:18:57,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:18:57,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:18:57,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:18:57,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:18:57,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:18:57,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:18:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 10:18:57,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927079118] [2020-10-14 10:18:57,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:18:57,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 10:18:57,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525981599] [2020-10-14 10:18:57,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 10:18:57,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:18:57,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 10:18:57,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-14 10:18:57,029 INFO L87 Difference]: Start difference. First operand 851 states and 1222 transitions. Second operand 7 states. [2020-10-14 10:18:58,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:18:58,499 INFO L93 Difference]: Finished difference Result 2559 states and 3938 transitions. [2020-10-14 10:18:58,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 10:18:58,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2020-10-14 10:18:58,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:18:58,513 INFO L225 Difference]: With dead ends: 2559 [2020-10-14 10:18:58,513 INFO L226 Difference]: Without dead ends: 1762 [2020-10-14 10:18:58,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-14 10:18:58,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2020-10-14 10:18:58,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1308. [2020-10-14 10:18:58,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1308 states. [2020-10-14 10:18:58,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 1920 transitions. [2020-10-14 10:18:58,650 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 1920 transitions. Word has length 121 [2020-10-14 10:18:58,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:18:58,650 INFO L479 AbstractCegarLoop]: Abstraction has 1308 states and 1920 transitions. [2020-10-14 10:18:58,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 10:18:58,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 1920 transitions. [2020-10-14 10:18:58,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 10:18:58,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:18:58,655 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:18:58,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 10:18:58,655 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:18:58,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:18:58,655 INFO L82 PathProgramCache]: Analyzing trace with hash 580632251, now seen corresponding path program 1 times [2020-10-14 10:18:58,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:18:58,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007872548] [2020-10-14 10:18:58,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:18:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:18:58,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:58,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:58,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:58,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:58,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:58,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:58,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:59,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:18:59,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:00,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:00,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:03,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:03,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 10:19:03,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 10:19:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 10:19:03,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:03,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:19:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 10:19:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 10:19:03,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:03,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:19:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:03,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:03,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:03,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:19:03,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:03,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:19:03,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:03,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:03,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:03,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:03,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:03,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:03,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:19:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:03,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:03,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:03,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:19:03,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:03,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 10:19:03,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:03,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:03,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:19:03,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:19:03,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 10:19:03,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:03,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:19:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:03,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:03,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:03,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:19:03,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:03,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:19:03,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:03,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:03,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:03,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:03,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:19:03,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:03,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 10:19:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:03,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:03,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:03,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 10:19:03,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:03,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:03,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:03,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:03,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:03,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 10:19:03,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:03,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:03,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 10:19:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:03,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:03,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:03,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:03,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:03,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:03,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:03,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:03,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:03,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:19:03,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:03,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:03,945 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 10:19:03,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007872548] [2020-10-14 10:19:03,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:19:03,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 10:19:03,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062520788] [2020-10-14 10:19:03,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 10:19:03,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:19:03,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 10:19:03,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:19:03,947 INFO L87 Difference]: Start difference. First operand 1308 states and 1920 transitions. Second operand 8 states. [2020-10-14 10:19:05,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:19:05,548 INFO L93 Difference]: Finished difference Result 3999 states and 6044 transitions. [2020-10-14 10:19:05,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 10:19:05,548 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-10-14 10:19:05,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:19:05,564 INFO L225 Difference]: With dead ends: 3999 [2020-10-14 10:19:05,564 INFO L226 Difference]: Without dead ends: 2700 [2020-10-14 10:19:05,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-10-14 10:19:05,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2020-10-14 10:19:05,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2086. [2020-10-14 10:19:05,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2086 states. [2020-10-14 10:19:05,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 3143 transitions. [2020-10-14 10:19:05,796 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 3143 transitions. Word has length 123 [2020-10-14 10:19:05,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:19:05,796 INFO L479 AbstractCegarLoop]: Abstraction has 2086 states and 3143 transitions. [2020-10-14 10:19:05,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 10:19:05,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 3143 transitions. [2020-10-14 10:19:05,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 10:19:05,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:19:05,807 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:19:05,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 10:19:05,807 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:19:05,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:19:05,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1157301742, now seen corresponding path program 1 times [2020-10-14 10:19:05,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:19:05,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926275572] [2020-10-14 10:19:05,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:19:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:05,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:05,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:05,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:05,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:06,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:06,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:06,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:06,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:06,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:06,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:10,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:10,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 10:19:10,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 10:19:10,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 10:19:10,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:10,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 10:19:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 10:19:10,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:10,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:19:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:10,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:10,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:10,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:19:10,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:10,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:10,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:10,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:10,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:10,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:10,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:10,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:10,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:19:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:10,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:10,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:10,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 10:19:10,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:10,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 10:19:10,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:10,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:10,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:10,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:10,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 10:19:10,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:11,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:19:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:11,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:11,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:11,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:19:11,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:11,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:11,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:11,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:11,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:11,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:11,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:11,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:19:11,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 10:19:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:11,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:11,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:11,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:11,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:11,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:11,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:11,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:11,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:11,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:11,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:19:11,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:11,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 10:19:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:11,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:11,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:11,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 10:19:11,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:11,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:11,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:11,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:11,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:11,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 10:19:11,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:11,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:11,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-14 10:19:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:11,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:11,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:11,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:11,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:11,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:11,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:11,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:11,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:19:11,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:11,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:11,110 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 10:19:11,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926275572] [2020-10-14 10:19:11,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:19:11,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 10:19:11,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20988140] [2020-10-14 10:19:11,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 10:19:11,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:19:11,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 10:19:11,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:19:11,112 INFO L87 Difference]: Start difference. First operand 2086 states and 3143 transitions. Second operand 8 states. [2020-10-14 10:19:12,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:19:12,797 INFO L93 Difference]: Finished difference Result 5659 states and 8943 transitions. [2020-10-14 10:19:12,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 10:19:12,798 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 132 [2020-10-14 10:19:12,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:19:12,822 INFO L225 Difference]: With dead ends: 5659 [2020-10-14 10:19:12,822 INFO L226 Difference]: Without dead ends: 3625 [2020-10-14 10:19:12,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-14 10:19:12,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3625 states. [2020-10-14 10:19:13,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3625 to 2909. [2020-10-14 10:19:13,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2909 states. [2020-10-14 10:19:13,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2909 states to 2909 states and 4423 transitions. [2020-10-14 10:19:13,096 INFO L78 Accepts]: Start accepts. Automaton has 2909 states and 4423 transitions. Word has length 132 [2020-10-14 10:19:13,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:19:13,097 INFO L479 AbstractCegarLoop]: Abstraction has 2909 states and 4423 transitions. [2020-10-14 10:19:13,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 10:19:13,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2909 states and 4423 transitions. [2020-10-14 10:19:13,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 10:19:13,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:19:13,115 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:19:13,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 10:19:13,115 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:19:13,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:19:13,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1951017885, now seen corresponding path program 1 times [2020-10-14 10:19:13,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:19:13,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200114846] [2020-10-14 10:19:13,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:19:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:13,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:13,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:13,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:13,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:13,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:13,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:13,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:13,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:14,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:14,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:18,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:18,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 10:19:18,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 10:19:18,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:19:18,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:18,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:18,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:19:18,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 10:19:18,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 10:19:18,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:18,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:19:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:18,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:18,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:18,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:19:18,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:18,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:18,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:18,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:18,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:18,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:19:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:18,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:18,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:18,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:18,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 10:19:18,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:19:18,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 10:19:18,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:18,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:19:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:19:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 10:19:18,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:18,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:19:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:18,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:18,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:18,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:19:18,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:18,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:19:18,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:18,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:19:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:19:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 10:19:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:18,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 10:19:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:18,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:18,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:18,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:18,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:18,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:18,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:18,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:18,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:18,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:18,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:19:18,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:18,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 10:19:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:18,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:18,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:18,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 10:19:18,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:18,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:18,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:18,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 10:19:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:18,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:18,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 10:19:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:18,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:18,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:18,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:18,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:18,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:19:18,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:18,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:19:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:18,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:18,446 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 10:19:18,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200114846] [2020-10-14 10:19:18,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:19:18,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 10:19:18,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971659127] [2020-10-14 10:19:18,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 10:19:18,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:19:18,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 10:19:18,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-14 10:19:18,448 INFO L87 Difference]: Start difference. First operand 2909 states and 4423 transitions. Second operand 10 states. [2020-10-14 10:19:22,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:19:22,470 INFO L93 Difference]: Finished difference Result 11750 states and 18998 transitions. [2020-10-14 10:19:22,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 10:19:22,470 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 133 [2020-10-14 10:19:22,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:19:22,530 INFO L225 Difference]: With dead ends: 11750 [2020-10-14 10:19:22,530 INFO L226 Difference]: Without dead ends: 8909 [2020-10-14 10:19:22,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=270, Invalid=1062, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 10:19:22,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8909 states. [2020-10-14 10:19:23,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8909 to 6271. [2020-10-14 10:19:23,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6271 states. [2020-10-14 10:19:23,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6271 states to 6271 states and 9534 transitions. [2020-10-14 10:19:23,158 INFO L78 Accepts]: Start accepts. Automaton has 6271 states and 9534 transitions. Word has length 133 [2020-10-14 10:19:23,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:19:23,158 INFO L479 AbstractCegarLoop]: Abstraction has 6271 states and 9534 transitions. [2020-10-14 10:19:23,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 10:19:23,159 INFO L276 IsEmpty]: Start isEmpty. Operand 6271 states and 9534 transitions. [2020-10-14 10:19:23,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 10:19:23,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:19:23,192 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:19:23,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 10:19:23,192 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:19:23,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:19:23,192 INFO L82 PathProgramCache]: Analyzing trace with hash -816336734, now seen corresponding path program 1 times [2020-10-14 10:19:23,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:19:23,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249732660] [2020-10-14 10:19:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:19:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:23,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:23,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:23,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:23,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:23,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:23,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:23,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:23,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:23,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:23,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:23,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:23,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:23,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:26,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:28,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:28,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 10:19:28,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 10:19:28,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 10:19:28,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:28,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 10:19:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 10:19:28,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:28,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:19:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:28,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:28,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:28,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:19:28,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:28,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:28,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:28,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:28,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:28,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:28,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:28,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:19:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:28,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:28,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:28,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:28,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:28,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:28,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 10:19:28,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:19:28,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 10:19:28,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:28,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:28,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:28,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 10:19:28,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 10:19:28,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:28,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:19:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:28,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:28,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:28,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:19:28,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:28,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:28,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:28,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:28,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:28,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:28,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:19:28,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:28,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 10:19:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:28,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:28,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:28,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:28,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:28,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:19:28,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:28,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:19:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:28,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:28,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 10:19:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:28,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:28,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:28,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 10:19:28,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:28,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:28,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:28,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:28,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:28,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 10:19:28,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:28,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:28,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-14 10:19:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:28,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:28,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:28,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:28,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:28,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:19:28,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:28,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:28,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:19:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:28,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:28,475 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 10:19:28,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249732660] [2020-10-14 10:19:28,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:19:28,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 10:19:28,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222519978] [2020-10-14 10:19:28,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 10:19:28,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:19:28,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 10:19:28,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:19:28,477 INFO L87 Difference]: Start difference. First operand 6271 states and 9534 transitions. Second operand 8 states. [2020-10-14 10:19:30,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:19:30,671 INFO L93 Difference]: Finished difference Result 18308 states and 28485 transitions. [2020-10-14 10:19:30,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 10:19:30,672 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-10-14 10:19:30,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:19:30,727 INFO L225 Difference]: With dead ends: 18308 [2020-10-14 10:19:30,727 INFO L226 Difference]: Without dead ends: 12161 [2020-10-14 10:19:30,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-14 10:19:30,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12161 states. [2020-10-14 10:19:31,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12161 to 10349. [2020-10-14 10:19:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10349 states. [2020-10-14 10:19:31,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10349 states to 10349 states and 15476 transitions. [2020-10-14 10:19:31,595 INFO L78 Accepts]: Start accepts. Automaton has 10349 states and 15476 transitions. Word has length 140 [2020-10-14 10:19:31,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:19:31,595 INFO L479 AbstractCegarLoop]: Abstraction has 10349 states and 15476 transitions. [2020-10-14 10:19:31,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 10:19:31,596 INFO L276 IsEmpty]: Start isEmpty. Operand 10349 states and 15476 transitions. [2020-10-14 10:19:31,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 10:19:31,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:19:31,637 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:19:31,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 10:19:31,637 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:19:31,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:19:31,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1089184283, now seen corresponding path program 1 times [2020-10-14 10:19:31,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:19:31,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784303406] [2020-10-14 10:19:31,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:19:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:31,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:31,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:31,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:31,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:31,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:31,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:32,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:32,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:36,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:36,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 10:19:36,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 10:19:36,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:19:36,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:36,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:36,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:36,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:19:36,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 10:19:36,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:36,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:19:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:36,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:36,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:36,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:19:36,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:36,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:19:36,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:36,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:36,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:36,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:36,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:36,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:36,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:19:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:36,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:36,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:36,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 10:19:36,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:36,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:19:36,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:36,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:36,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:36,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 10:19:36,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:36,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:36,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:19:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:36,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:36,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:36,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:19:36,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:36,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:19:36,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:36,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:36,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:36,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 10:19:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:36,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:36,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:36,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:36,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:36,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:19:36,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:36,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:36,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:36,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:36,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:36,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 10:19:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:36,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:36,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:36,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 10:19:36,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:36,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:36,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:36,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:36,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:36,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 10:19:36,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:36,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:36,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 10:19:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:36,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:36,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:36,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:36,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:36,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:19:36,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:36,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:36,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:36,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:19:36,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:36,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 10:19:36,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784303406] [2020-10-14 10:19:36,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:19:36,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 10:19:36,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694067253] [2020-10-14 10:19:36,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 10:19:36,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:19:36,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 10:19:36,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:19:36,929 INFO L87 Difference]: Start difference. First operand 10349 states and 15476 transitions. Second operand 8 states. [2020-10-14 10:19:38,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:19:38,725 INFO L93 Difference]: Finished difference Result 21704 states and 32483 transitions. [2020-10-14 10:19:38,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 10:19:38,726 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2020-10-14 10:19:38,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:19:38,780 INFO L225 Difference]: With dead ends: 21704 [2020-10-14 10:19:38,781 INFO L226 Difference]: Without dead ends: 11490 [2020-10-14 10:19:38,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-14 10:19:38,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11490 states. [2020-10-14 10:19:39,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11490 to 9787. [2020-10-14 10:19:39,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9787 states. [2020-10-14 10:19:39,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9787 states to 9787 states and 14573 transitions. [2020-10-14 10:19:39,588 INFO L78 Accepts]: Start accepts. Automaton has 9787 states and 14573 transitions. Word has length 133 [2020-10-14 10:19:39,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:19:39,589 INFO L479 AbstractCegarLoop]: Abstraction has 9787 states and 14573 transitions. [2020-10-14 10:19:39,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 10:19:39,589 INFO L276 IsEmpty]: Start isEmpty. Operand 9787 states and 14573 transitions. [2020-10-14 10:19:39,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 10:19:39,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:19:39,623 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-14 10:19:39,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 10:19:39,624 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:19:39,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:19:39,624 INFO L82 PathProgramCache]: Analyzing trace with hash -81929005, now seen corresponding path program 1 times [2020-10-14 10:19:39,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:19:39,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236727060] [2020-10-14 10:19:39,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:19:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:39,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:39,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:39,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:39,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:39,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:39,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:40,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:44,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:44,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 10:19:44,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:19:44,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 10:19:44,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:44,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:44,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:44,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 10:19:44,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:19:44,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:44,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:19:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:44,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:44,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:44,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:19:44,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:44,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:19:44,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:44,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:44,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:44,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:44,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:19:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:44,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:44,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:44,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 10:19:44,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:44,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 10:19:44,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:44,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:44,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:44,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:44,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 10:19:44,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:44,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:19:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:44,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:44,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:44,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:19:44,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:44,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:19:44,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:44,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:44,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:44,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:44,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:44,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:19:44,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 10:19:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:44,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:44,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:44,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:19:44,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:44,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:44,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:44,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:44,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:44,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:44,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 10:19:44,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:44,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 10:19:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:44,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:44,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:44,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:44,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:44,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:19:44,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:44,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:44,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:44,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:44,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:19:44,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:44,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 10:19:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:44,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:44,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:44,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 10:19:44,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:44,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:44,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:44,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:44,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:44,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 10:19:44,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:44,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:44,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-14 10:19:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:44,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:44,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:44,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:44,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:44,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:19:44,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:44,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:44,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:44,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:19:44,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:44,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:19:44,947 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 10:19:44,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236727060] [2020-10-14 10:19:44,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:19:44,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 10:19:44,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921467035] [2020-10-14 10:19:44,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 10:19:44,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:19:44,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 10:19:44,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 10:19:44,949 INFO L87 Difference]: Start difference. First operand 9787 states and 14573 transitions. Second operand 9 states. [2020-10-14 10:19:48,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:19:48,486 INFO L93 Difference]: Finished difference Result 24101 states and 36864 transitions. [2020-10-14 10:19:48,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 10:19:48,487 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 140 [2020-10-14 10:19:48,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:19:48,544 INFO L225 Difference]: With dead ends: 24101 [2020-10-14 10:19:48,544 INFO L226 Difference]: Without dead ends: 14449 [2020-10-14 10:19:48,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2020-10-14 10:19:48,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14449 states. [2020-10-14 10:19:50,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14449 to 11148. [2020-10-14 10:19:50,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11148 states. [2020-10-14 10:19:50,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11148 states to 11148 states and 16465 transitions. [2020-10-14 10:19:50,327 INFO L78 Accepts]: Start accepts. Automaton has 11148 states and 16465 transitions. Word has length 140 [2020-10-14 10:19:50,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:19:50,328 INFO L479 AbstractCegarLoop]: Abstraction has 11148 states and 16465 transitions. [2020-10-14 10:19:50,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 10:19:50,328 INFO L276 IsEmpty]: Start isEmpty. Operand 11148 states and 16465 transitions. [2020-10-14 10:19:50,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 10:19:50,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:19:50,354 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:19:50,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 10:19:50,354 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:19:50,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:19:50,355 INFO L82 PathProgramCache]: Analyzing trace with hash 356831373, now seen corresponding path program 1 times [2020-10-14 10:19:50,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:19:50,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562721181] [2020-10-14 10:19:50,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:19:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:50,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:50,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:50,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:50,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:50,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:50,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:50,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:50,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:50,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:50,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:52,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:52,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:52,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:52,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:55,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:55,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 10:19:55,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 10:19:55,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 10:19:55,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:55,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:55,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:19:55,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:19:55,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 10:19:55,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:55,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:19:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:55,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:55,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:55,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:19:55,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:55,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:19:55,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:55,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:55,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:55,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:55,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:55,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:55,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 10:19:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:55,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:55,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:55,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:55,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:55,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:55,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 10:19:55,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:19:55,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 10:19:55,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:55,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:55,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:55,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 10:19:55,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:55,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:55,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 10:19:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:55,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:55,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:55,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:19:55,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:55,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:19:55,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:55,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:55,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:55,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:55,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:55,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:55,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 10:19:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:55,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:55,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:55,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:55,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:55,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:19:55,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:55,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:55,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:55,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 10:19:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:55,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:55,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:55,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:55,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:55,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:19:55,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:55,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:19:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:55,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:55,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-14 10:19:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:55,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:55,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:55,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:55,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 10:19:55,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:19:55,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:19:55,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:55,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:55,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:55,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 10:19:55,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:55,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:55,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 10:19:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:55,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:55,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:19:55,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:19:55,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:19:55,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:19:55,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:19:55,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:19:55,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:19:55,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:19:55,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:19:55,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:19:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-14 10:19:55,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562721181] [2020-10-14 10:19:55,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:19:55,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 10:19:55,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191107393] [2020-10-14 10:19:55,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 10:19:55,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:19:55,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 10:19:55,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 10:19:55,640 INFO L87 Difference]: Start difference. First operand 11148 states and 16465 transitions. Second operand 9 states. [2020-10-14 10:19:57,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:19:57,528 INFO L93 Difference]: Finished difference Result 23545 states and 35004 transitions. [2020-10-14 10:19:57,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 10:19:57,529 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 154 [2020-10-14 10:19:57,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:19:57,582 INFO L225 Difference]: With dead ends: 23545 [2020-10-14 10:19:57,582 INFO L226 Difference]: Without dead ends: 12518 [2020-10-14 10:19:57,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-10-14 10:19:57,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12518 states. [2020-10-14 10:19:58,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12518 to 10010. [2020-10-14 10:19:58,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10010 states. [2020-10-14 10:19:58,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10010 states to 10010 states and 14766 transitions. [2020-10-14 10:19:58,617 INFO L78 Accepts]: Start accepts. Automaton has 10010 states and 14766 transitions. Word has length 154 [2020-10-14 10:19:58,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:19:58,617 INFO L479 AbstractCegarLoop]: Abstraction has 10010 states and 14766 transitions. [2020-10-14 10:19:58,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 10:19:58,617 INFO L276 IsEmpty]: Start isEmpty. Operand 10010 states and 14766 transitions. [2020-10-14 10:19:58,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 10:19:58,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:19:58,630 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-14 10:19:58,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 10:19:58,631 INFO L427 AbstractCegarLoop]: === Iteration 22 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:19:58,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:19:58,631 INFO L82 PathProgramCache]: Analyzing trace with hash 2009537572, now seen corresponding path program 1 times [2020-10-14 10:19:58,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:19:58,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588115090] [2020-10-14 10:19:58,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:19:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:19:58,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:58,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:58,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:58,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:58,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:58,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:59,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:59,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:19:59,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:02,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:03,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:03,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:03,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:03,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 10:20:03,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 10:20:03,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:20:03,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:03,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:03,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:03,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-14 10:20:03,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 10:20:03,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:03,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:20:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:03,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:03,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:03,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:20:03,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:03,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:03,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:03,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:03,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:03,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:03,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:03,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:03,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 10:20:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:03,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:03,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:03,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 10:20:03,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:03,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:20:03,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:03,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:03,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:03,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:03,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:03,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:03,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:20:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:03,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:03,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:03,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:03,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:03,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:03,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:03,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:03,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:03,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:03,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:03,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:03,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 10:20:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:03,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:03,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:03,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:03,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:03,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:03,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:03,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:03,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:03,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:03,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:03,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 67 [2020-10-14 10:20:03,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 10:20:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:03,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:03,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:03,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:03,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:03,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:03,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:03,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:03,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:03,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 10:20:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:03,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:03,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:03,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 10:20:03,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:03,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:20:03,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:03,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:03,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:03,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 10:20:03,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 10:20:03,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:03,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 10:20:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:03,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:03,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:03,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:03,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:03,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:03,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:03,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:20:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:03,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:03,949 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 10:20:03,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588115090] [2020-10-14 10:20:03,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:20:03,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 10:20:03,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779425210] [2020-10-14 10:20:03,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 10:20:03,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:20:03,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 10:20:03,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 10:20:03,951 INFO L87 Difference]: Start difference. First operand 10010 states and 14766 transitions. Second operand 9 states. [2020-10-14 10:20:05,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:20:05,813 INFO L93 Difference]: Finished difference Result 19957 states and 29839 transitions. [2020-10-14 10:20:05,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 10:20:05,814 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 145 [2020-10-14 10:20:05,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:20:05,862 INFO L225 Difference]: With dead ends: 19957 [2020-10-14 10:20:05,863 INFO L226 Difference]: Without dead ends: 12357 [2020-10-14 10:20:05,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-14 10:20:05,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12357 states. [2020-10-14 10:20:06,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12357 to 9817. [2020-10-14 10:20:06,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9817 states. [2020-10-14 10:20:06,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9817 states to 9817 states and 14380 transitions. [2020-10-14 10:20:06,717 INFO L78 Accepts]: Start accepts. Automaton has 9817 states and 14380 transitions. Word has length 145 [2020-10-14 10:20:06,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:20:06,717 INFO L479 AbstractCegarLoop]: Abstraction has 9817 states and 14380 transitions. [2020-10-14 10:20:06,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 10:20:06,717 INFO L276 IsEmpty]: Start isEmpty. Operand 9817 states and 14380 transitions. [2020-10-14 10:20:06,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 10:20:06,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:20:06,732 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:20:06,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 10:20:06,732 INFO L427 AbstractCegarLoop]: === Iteration 23 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:20:06,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:20:06,733 INFO L82 PathProgramCache]: Analyzing trace with hash -335713806, now seen corresponding path program 1 times [2020-10-14 10:20:06,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:20:06,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801616402] [2020-10-14 10:20:06,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:20:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:06,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:06,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:06,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:06,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:06,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:06,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:07,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:07,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:07,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:08,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:08,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:11,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:11,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 10:20:11,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 10:20:11,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:20:11,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:11,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:11,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:20:11,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:20:11,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 10:20:11,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:11,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:20:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:11,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:11,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:11,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:20:11,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:11,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:11,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:11,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:11,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:11,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:11,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:11,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:11,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 10:20:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:11,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:11,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:11,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 10:20:11,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:11,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:20:11,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:11,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 10:20:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:11,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:11,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:20:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:11,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:11,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:11,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:11,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:11,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:11,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:11,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:11,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:11,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:11,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:11,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:11,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 10:20:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:11,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:11,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:11,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:11,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:11,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:11,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:11,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:11,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:11,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:11,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:11,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:11,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 10:20:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:11,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:11,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:11,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:11,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:11,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:11,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:11,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:11,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:11,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:11,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:11,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:11,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 10:20:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:11,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:11,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:11,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 10:20:11,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:11,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:20:11,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:11,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:11,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:11,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 10:20:11,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:11,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:11,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 10:20:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:11,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:11,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:11,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:11,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:11,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:11,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:11,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:20:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:11,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:20:11,999 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 10:20:12,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801616402] [2020-10-14 10:20:12,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:20:12,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 10:20:12,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412017970] [2020-10-14 10:20:12,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 10:20:12,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:20:12,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 10:20:12,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 10:20:12,002 INFO L87 Difference]: Start difference. First operand 9817 states and 14380 transitions. Second operand 9 states. [2020-10-14 10:20:14,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:20:14,333 INFO L93 Difference]: Finished difference Result 21578 states and 31877 transitions. [2020-10-14 10:20:14,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 10:20:14,333 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 146 [2020-10-14 10:20:14,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:20:14,387 INFO L225 Difference]: With dead ends: 21578 [2020-10-14 10:20:14,388 INFO L226 Difference]: Without dead ends: 12238 [2020-10-14 10:20:14,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2020-10-14 10:20:14,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12238 states. [2020-10-14 10:20:15,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12238 to 9763. [2020-10-14 10:20:15,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9763 states. [2020-10-14 10:20:15,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9763 states to 9763 states and 14270 transitions. [2020-10-14 10:20:15,531 INFO L78 Accepts]: Start accepts. Automaton has 9763 states and 14270 transitions. Word has length 146 [2020-10-14 10:20:15,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:20:15,531 INFO L479 AbstractCegarLoop]: Abstraction has 9763 states and 14270 transitions. [2020-10-14 10:20:15,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 10:20:15,531 INFO L276 IsEmpty]: Start isEmpty. Operand 9763 states and 14270 transitions. [2020-10-14 10:20:15,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 10:20:15,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:20:15,549 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:20:15,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 10:20:15,549 INFO L427 AbstractCegarLoop]: === Iteration 24 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:20:15,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:20:15,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1344526086, now seen corresponding path program 1 times [2020-10-14 10:20:15,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:20:15,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475351984] [2020-10-14 10:20:15,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:20:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:15,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:15,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:15,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:15,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:15,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:15,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:15,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:15,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:17,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:17,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:20,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:20,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 10:20:20,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 10:20:20,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:20:20,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:20,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:20,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:20,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 10:20:20,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 10:20:20,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:20,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:20:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:20,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:20,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:20,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:20:20,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:20,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:20,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:20,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:20,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:20,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:20,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:20,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:20,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:20:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:20,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:20,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:20,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 10:20:20,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:20,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 10:20:20,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:20,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:20,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:20,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:20,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 10:20:20,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:20,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:20:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:20,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:20,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:20,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:20,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:20,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:20,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:20,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:20,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:20,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:20,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:20,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:20,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 10:20:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:20,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:20,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:20,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:20,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:20,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:20,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:20,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:20,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:20,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:20,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 10:20:20,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:20,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 10:20:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:20,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:20,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:20,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:20,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:20,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:20,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:20,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:20,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:20,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:20,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:20:20,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:20,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 10:20:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:20,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:20,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:20,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 10:20:20,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:20,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:20,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:20,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:20,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:20,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 10:20:20,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:20,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:20,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 10:20:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:20,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:20,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:20,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:20,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:20,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:20,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:20,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:20,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:20,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:20:20,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:20,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 10:20:20,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475351984] [2020-10-14 10:20:20,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:20:20,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 10:20:20,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320189784] [2020-10-14 10:20:20,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 10:20:20,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:20:20,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 10:20:20,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 10:20:20,837 INFO L87 Difference]: Start difference. First operand 9763 states and 14270 transitions. Second operand 9 states. [2020-10-14 10:20:23,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:20:23,612 INFO L93 Difference]: Finished difference Result 16455 states and 24034 transitions. [2020-10-14 10:20:23,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 10:20:23,613 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 144 [2020-10-14 10:20:23,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:20:23,630 INFO L225 Difference]: With dead ends: 16455 [2020-10-14 10:20:23,631 INFO L226 Difference]: Without dead ends: 7169 [2020-10-14 10:20:23,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2020-10-14 10:20:23,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7169 states. [2020-10-14 10:20:24,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7169 to 5974. [2020-10-14 10:20:24,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5974 states. [2020-10-14 10:20:24,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5974 states to 5974 states and 8438 transitions. [2020-10-14 10:20:24,229 INFO L78 Accepts]: Start accepts. Automaton has 5974 states and 8438 transitions. Word has length 144 [2020-10-14 10:20:24,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:20:24,230 INFO L479 AbstractCegarLoop]: Abstraction has 5974 states and 8438 transitions. [2020-10-14 10:20:24,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 10:20:24,230 INFO L276 IsEmpty]: Start isEmpty. Operand 5974 states and 8438 transitions. [2020-10-14 10:20:24,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 10:20:24,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:20:24,236 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:20:24,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 10:20:24,236 INFO L427 AbstractCegarLoop]: === Iteration 25 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:20:24,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:20:24,236 INFO L82 PathProgramCache]: Analyzing trace with hash -508829555, now seen corresponding path program 1 times [2020-10-14 10:20:24,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:20:24,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302459622] [2020-10-14 10:20:24,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:20:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:24,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:24,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:24,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:24,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:24,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:24,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:24,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:29,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:29,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 10:20:29,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:20:29,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 10:20:29,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:29,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:29,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:20:29,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 10:20:29,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 10:20:29,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:29,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:20:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:29,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:29,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:29,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:20:29,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:29,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:20:29,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:29,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:29,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:29,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:29,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:29,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:29,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:20:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:29,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:29,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:29,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:29,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 10:20:29,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:20:29,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 10:20:29,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:29,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:29,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:20:29,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:20:29,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 10:20:29,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:29,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:20:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:29,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:29,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:29,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:29,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:29,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:20:29,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:29,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:29,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:20:29,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:20:29,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 10:20:29,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:29,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 10:20:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:29,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:29,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:29,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:29,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:29,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:29,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:29,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:29,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:29,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:29,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:20:29,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:29,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 10:20:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:29,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:29,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:29,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:29,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:29,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:20:29,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:29,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:29,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:29,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:29,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:20:29,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:29,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 10:20:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:29,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:29,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:29,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 10:20:29,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:29,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:29,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:29,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 10:20:29,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:29,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:29,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 10:20:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:29,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:29,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:29,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:29,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:29,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:29,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:29,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:29,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:29,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:20:29,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:29,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:20:29,577 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 10:20:29,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302459622] [2020-10-14 10:20:29,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:20:29,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 10:20:29,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504910931] [2020-10-14 10:20:29,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 10:20:29,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:20:29,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 10:20:29,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-14 10:20:29,578 INFO L87 Difference]: Start difference. First operand 5974 states and 8438 transitions. Second operand 11 states. [2020-10-14 10:20:35,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:20:35,107 INFO L93 Difference]: Finished difference Result 20268 states and 29413 transitions. [2020-10-14 10:20:35,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 10:20:35,107 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-10-14 10:20:35,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:20:35,177 INFO L225 Difference]: With dead ends: 20268 [2020-10-14 10:20:35,177 INFO L226 Difference]: Without dead ends: 14373 [2020-10-14 10:20:35,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=381, Invalid=1689, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 10:20:35,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14373 states. [2020-10-14 10:20:37,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14373 to 12116. [2020-10-14 10:20:37,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12116 states. [2020-10-14 10:20:37,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12116 states to 12116 states and 16809 transitions. [2020-10-14 10:20:37,463 INFO L78 Accepts]: Start accepts. Automaton has 12116 states and 16809 transitions. Word has length 143 [2020-10-14 10:20:37,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:20:37,464 INFO L479 AbstractCegarLoop]: Abstraction has 12116 states and 16809 transitions. [2020-10-14 10:20:37,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 10:20:37,464 INFO L276 IsEmpty]: Start isEmpty. Operand 12116 states and 16809 transitions. [2020-10-14 10:20:37,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 10:20:37,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:20:37,488 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:20:37,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 10:20:37,489 INFO L427 AbstractCegarLoop]: === Iteration 26 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:20:37,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:20:37,492 INFO L82 PathProgramCache]: Analyzing trace with hash -220010165, now seen corresponding path program 1 times [2020-10-14 10:20:37,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:20:37,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10371219] [2020-10-14 10:20:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:20:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:37,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:37,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:37,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:37,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:38,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:40,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:40,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 10:20:40,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:20:40,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2704 [2020-10-14 10:20:40,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:40,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:40,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:40,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:20:40,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:20:40,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:20:40,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:20:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:40,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:40,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:40,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:20:40,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:40,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:20:40,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:40,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:40,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:20:40,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:20:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:40,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:40,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:40,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 10:20:40,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:40,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 10:20:40,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:40,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:40,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:40,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 10:20:40,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:40,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:40,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:20:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:40,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:40,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:40,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:40,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:40,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:40,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:40,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:40,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:40,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:40,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:40,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 10:20:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:40,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:40,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:40,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:40,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:40,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:40,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:40,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:40,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:40,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:40,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:40,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:40,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 10:20:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:40,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:40,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:40,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:40,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:40,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:40,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:40,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:40,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:40,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:40,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:40,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 10:20:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:40,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:40,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:40,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 10:20:40,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:40,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:40,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:40,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:40,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:40,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 10:20:40,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:40,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:40,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 10:20:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:40,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:40,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:40,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:40,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:40,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:40,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:40,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:40,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:40,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:20:40,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:40,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 10:20:40,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10371219] [2020-10-14 10:20:40,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:20:40,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 10:20:40,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495997511] [2020-10-14 10:20:40,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 10:20:40,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:20:40,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 10:20:40,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 10:20:40,496 INFO L87 Difference]: Start difference. First operand 12116 states and 16809 transitions. Second operand 9 states. [2020-10-14 10:20:42,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:20:42,737 INFO L93 Difference]: Finished difference Result 25059 states and 34905 transitions. [2020-10-14 10:20:42,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 10:20:42,738 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 143 [2020-10-14 10:20:42,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:20:42,771 INFO L225 Difference]: With dead ends: 25059 [2020-10-14 10:20:42,771 INFO L226 Difference]: Without dead ends: 13022 [2020-10-14 10:20:42,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-10-14 10:20:42,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13022 states. [2020-10-14 10:20:43,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13022 to 11515. [2020-10-14 10:20:43,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11515 states. [2020-10-14 10:20:43,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11515 states to 11515 states and 16015 transitions. [2020-10-14 10:20:43,560 INFO L78 Accepts]: Start accepts. Automaton has 11515 states and 16015 transitions. Word has length 143 [2020-10-14 10:20:43,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:20:43,561 INFO L479 AbstractCegarLoop]: Abstraction has 11515 states and 16015 transitions. [2020-10-14 10:20:43,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 10:20:43,561 INFO L276 IsEmpty]: Start isEmpty. Operand 11515 states and 16015 transitions. [2020-10-14 10:20:43,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 10:20:43,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:20:43,572 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-14 10:20:43,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 10:20:43,572 INFO L427 AbstractCegarLoop]: === Iteration 27 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:20:43,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:20:43,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1175244680, now seen corresponding path program 1 times [2020-10-14 10:20:43,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:20:43,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340950964] [2020-10-14 10:20:43,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:20:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:43,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:43,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:43,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:43,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:43,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:44,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:48,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:48,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 10:20:48,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:20:48,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 10:20:48,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:48,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:48,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:48,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 10:20:48,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:20:48,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:48,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:20:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:48,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:48,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:48,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:20:48,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:48,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:48,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:48,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:48,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:48,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:48,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:48,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:48,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:20:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:48,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:48,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:48,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 10:20:48,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:48,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 10:20:48,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:48,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 10:20:48,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:48,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:20:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:48,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:48,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:48,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:48,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:48,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:48,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:48,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:48,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:48,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 10:20:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:48,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:48,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:48,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:48,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:48,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:48,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:48,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:48,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:48,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:48,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:48,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 10:20:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:48,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:48,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:48,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:48,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:48,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:48,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:48,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 10:20:48,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:48,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 10:20:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:48,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:48,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:48,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:48,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:48,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:48,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:48,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:48,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:20:48,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:48,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 10:20:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:48,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:48,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:48,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 10:20:48,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:48,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:48,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:48,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 10:20:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:48,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 10:20:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:48,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:48,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:48,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:48,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:48,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:48,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:48,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:20:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:48,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:48,909 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 10:20:48,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340950964] [2020-10-14 10:20:48,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:20:48,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 10:20:48,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416697026] [2020-10-14 10:20:48,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 10:20:48,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:20:48,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 10:20:48,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 10:20:48,911 INFO L87 Difference]: Start difference. First operand 11515 states and 16015 transitions. Second operand 10 states. [2020-10-14 10:20:51,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:20:51,823 INFO L93 Difference]: Finished difference Result 24346 states and 34782 transitions. [2020-10-14 10:20:51,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 10:20:51,824 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-10-14 10:20:51,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:20:51,873 INFO L225 Difference]: With dead ends: 24346 [2020-10-14 10:20:51,873 INFO L226 Difference]: Without dead ends: 12910 [2020-10-14 10:20:51,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2020-10-14 10:20:51,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12910 states. [2020-10-14 10:20:52,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12910 to 11198. [2020-10-14 10:20:52,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11198 states. [2020-10-14 10:20:52,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11198 states to 11198 states and 15387 transitions. [2020-10-14 10:20:52,674 INFO L78 Accepts]: Start accepts. Automaton has 11198 states and 15387 transitions. Word has length 150 [2020-10-14 10:20:52,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:20:52,674 INFO L479 AbstractCegarLoop]: Abstraction has 11198 states and 15387 transitions. [2020-10-14 10:20:52,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 10:20:52,674 INFO L276 IsEmpty]: Start isEmpty. Operand 11198 states and 15387 transitions. [2020-10-14 10:20:52,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-14 10:20:52,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:20:52,687 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:20:52,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 10:20:52,687 INFO L427 AbstractCegarLoop]: === Iteration 28 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:20:52,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:20:52,688 INFO L82 PathProgramCache]: Analyzing trace with hash 920952748, now seen corresponding path program 1 times [2020-10-14 10:20:52,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:20:52,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270984433] [2020-10-14 10:20:52,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:20:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:52,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:52,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:52,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:52,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:52,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:52,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:53,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:53,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:57,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:57,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 10:20:57,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 10:20:57,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:20:57,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:57,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:57,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:57,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 10:20:57,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 10:20:57,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:57,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:20:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:57,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:57,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:57,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:20:57,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:57,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:57,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:57,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:57,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:57,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:57,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:57,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:57,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:20:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:57,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:57,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:57,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 10:20:57,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:57,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 10:20:57,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:57,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:57,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:57,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:57,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 10:20:57,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:57,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:20:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:57,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:57,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:57,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:57,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:57,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:57,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:57,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:57,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:57,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 10:20:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:57,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:57,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:57,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:57,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:57,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:20:57,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:57,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:57,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:57,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:57,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:57,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:57,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 10:20:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:57,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:57,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:57,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:20:57,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:57,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:57,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:57,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:57,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:57,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:57,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 10:20:57,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:57,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 10:20:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:57,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:57,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:57,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:57,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:57,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:57,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:57,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:20:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:20:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:20:57,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:57,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 10:20:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:57,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:57,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:57,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 10:20:57,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:57,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:57,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:57,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:20:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:57,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:57,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 10:20:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:20:57,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:20:57,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:20:57,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:20:57,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:20:57,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:20:57,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:20:57,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:20:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:20:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:20:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:20:57,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:20:57,984 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 10:20:57,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270984433] [2020-10-14 10:20:57,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:20:57,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 10:20:57,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264512858] [2020-10-14 10:20:57,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 10:20:57,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:20:57,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 10:20:57,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 10:20:57,986 INFO L87 Difference]: Start difference. First operand 11198 states and 15387 transitions. Second operand 10 states. [2020-10-14 10:21:00,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:21:00,369 INFO L93 Difference]: Finished difference Result 15960 states and 21749 transitions. [2020-10-14 10:21:00,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 10:21:00,370 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 155 [2020-10-14 10:21:00,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:21:00,382 INFO L225 Difference]: With dead ends: 15960 [2020-10-14 10:21:00,382 INFO L226 Difference]: Without dead ends: 5245 [2020-10-14 10:21:00,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=214, Invalid=656, Unknown=0, NotChecked=0, Total=870 [2020-10-14 10:21:00,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5245 states. [2020-10-14 10:21:00,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5245 to 4864. [2020-10-14 10:21:00,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4864 states. [2020-10-14 10:21:00,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4864 states to 4864 states and 6232 transitions. [2020-10-14 10:21:00,750 INFO L78 Accepts]: Start accepts. Automaton has 4864 states and 6232 transitions. Word has length 155 [2020-10-14 10:21:00,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:21:00,751 INFO L479 AbstractCegarLoop]: Abstraction has 4864 states and 6232 transitions. [2020-10-14 10:21:00,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 10:21:00,751 INFO L276 IsEmpty]: Start isEmpty. Operand 4864 states and 6232 transitions. [2020-10-14 10:21:00,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 10:21:00,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:21:00,756 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:21:00,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 10:21:00,756 INFO L427 AbstractCegarLoop]: === Iteration 29 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:21:00,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:21:00,757 INFO L82 PathProgramCache]: Analyzing trace with hash -691382508, now seen corresponding path program 1 times [2020-10-14 10:21:00,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:21:00,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305787458] [2020-10-14 10:21:00,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:21:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:00,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:00,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:00,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:01,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:01,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:01,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:01,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:01,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:05,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:05,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 10:21:05,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 10:21:05,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 10:21:05,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:05,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:05,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:21:05,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:21:05,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 10:21:05,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:05,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:21:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:05,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:05,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:05,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:21:05,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:05,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:21:05,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:05,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:05,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:05,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:05,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:05,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:05,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 10:21:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:05,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:05,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:05,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 10:21:05,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:05,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 10:21:05,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:05,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 10:21:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:05,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:05,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:21:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:05,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:05,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:05,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:05,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:05,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:05,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:05,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:05,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:05,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:05,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:05,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:05,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 10:21:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:05,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:05,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:05,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:05,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:05,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:05,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:05,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:05,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:05,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:05,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 10:21:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:05,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:05,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:05,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:21:05,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:05,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:05,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:05,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:05,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:06,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 10:21:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:06,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:06,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:06,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:21:06,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:06,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:06,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:06,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:06,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:06,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:06,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:06,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:06,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 10:21:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:06,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:06,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:06,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 10:21:06,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:06,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:06,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:06,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:21:06,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:06,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:06,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-14 10:21:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:06,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:06,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:06,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:21:06,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:06,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:06,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:06,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:06,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:21:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:06,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:06,057 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 10:21:06,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305787458] [2020-10-14 10:21:06,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:21:06,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 10:21:06,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735033406] [2020-10-14 10:21:06,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 10:21:06,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:21:06,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 10:21:06,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 10:21:06,059 INFO L87 Difference]: Start difference. First operand 4864 states and 6232 transitions. Second operand 10 states. [2020-10-14 10:21:07,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:21:07,980 INFO L93 Difference]: Finished difference Result 8533 states and 10823 transitions. [2020-10-14 10:21:07,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 10:21:07,981 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-10-14 10:21:07,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:21:07,990 INFO L225 Difference]: With dead ends: 8533 [2020-10-14 10:21:07,990 INFO L226 Difference]: Without dead ends: 4274 [2020-10-14 10:21:07,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2020-10-14 10:21:08,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4274 states. [2020-10-14 10:21:08,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4274 to 4140. [2020-10-14 10:21:08,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4140 states. [2020-10-14 10:21:08,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4140 states to 4140 states and 5167 transitions. [2020-10-14 10:21:08,290 INFO L78 Accepts]: Start accepts. Automaton has 4140 states and 5167 transitions. Word has length 156 [2020-10-14 10:21:08,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:21:08,290 INFO L479 AbstractCegarLoop]: Abstraction has 4140 states and 5167 transitions. [2020-10-14 10:21:08,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 10:21:08,290 INFO L276 IsEmpty]: Start isEmpty. Operand 4140 states and 5167 transitions. [2020-10-14 10:21:08,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 10:21:08,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:21:08,294 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:21:08,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 10:21:08,294 INFO L427 AbstractCegarLoop]: === Iteration 30 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:21:08,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:21:08,294 INFO L82 PathProgramCache]: Analyzing trace with hash -174034575, now seen corresponding path program 1 times [2020-10-14 10:21:08,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:21:08,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57452833] [2020-10-14 10:21:08,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:21:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:08,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:08,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:08,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:08,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:10,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:10,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 10:21:10,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:21:10,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2269 [2020-10-14 10:21:10,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:10,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:10,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 10:21:10,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:21:10,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 10:21:10,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:10,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:21:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:10,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:10,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:10,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:21:10,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:10,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:10,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:10,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:10,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:10,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:21:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:10,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:10,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:10,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:10,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 10:21:10,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:21:10,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 10:21:10,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:10,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:21:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:21:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 10:21:10,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:10,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:21:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:10,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:10,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:10,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:10,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:10,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:10,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:10,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:10,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:21:10,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:10,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:21:10,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:10,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 10:21:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:10,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:10,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:10,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:10,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:10,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:10,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:10,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:10,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:21:10,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:10,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:21:10,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:10,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 10:21:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:10,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:10,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:10,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:10,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:10,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:10,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:10,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:21:10,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:10,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:21:10,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:10,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 10:21:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:10,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:10,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:10,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:10,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:21:10,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:21:10,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:21:10,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:10,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:21:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:21:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:21:10,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:10,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-14 10:21:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:10,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:10,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:10,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 10:21:10,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:10,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:10,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:10,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:10,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:10,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:21:10,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:10,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:10,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 10:21:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:10,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:10,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:10,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:21:10,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:10,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:10,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:10,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:21:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:10,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:11,007 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 10:21:11,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57452833] [2020-10-14 10:21:11,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:21:11,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 10:21:11,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561537598] [2020-10-14 10:21:11,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 10:21:11,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:21:11,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 10:21:11,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-14 10:21:11,010 INFO L87 Difference]: Start difference. First operand 4140 states and 5167 transitions. Second operand 13 states. [2020-10-14 10:21:13,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:21:13,216 INFO L93 Difference]: Finished difference Result 5158 states and 6355 transitions. [2020-10-14 10:21:13,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 10:21:13,217 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 153 [2020-10-14 10:21:13,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:21:13,221 INFO L225 Difference]: With dead ends: 5158 [2020-10-14 10:21:13,221 INFO L226 Difference]: Without dead ends: 1184 [2020-10-14 10:21:13,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=308, Invalid=1098, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 10:21:13,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2020-10-14 10:21:13,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1065. [2020-10-14 10:21:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2020-10-14 10:21:13,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1240 transitions. [2020-10-14 10:21:13,304 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1240 transitions. Word has length 153 [2020-10-14 10:21:13,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:21:13,304 INFO L479 AbstractCegarLoop]: Abstraction has 1065 states and 1240 transitions. [2020-10-14 10:21:13,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 10:21:13,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1240 transitions. [2020-10-14 10:21:13,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-14 10:21:13,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:21:13,306 INFO L422 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:21:13,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 10:21:13,306 INFO L427 AbstractCegarLoop]: === Iteration 31 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:21:13,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:21:13,307 INFO L82 PathProgramCache]: Analyzing trace with hash 49167235, now seen corresponding path program 1 times [2020-10-14 10:21:13,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:21:13,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531593807] [2020-10-14 10:21:13,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:21:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:13,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:13,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:13,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:13,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:13,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-14 10:21:13,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:21:13,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-10-14 10:21:13,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:13,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:13,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:21:13,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 10:21:13,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 10:21:13,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:14,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:21:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:14,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:14,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:14,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:21:14,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:14,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:21:14,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:14,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:14,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:21:14,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 10:21:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:14,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:14,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:14,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 10:21:14,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:14,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 10:21:14,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:14,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:14,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:14,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:14,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:14,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:21:14,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:21:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:14,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:14,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:14,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:14,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:14,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:14,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:14,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:14,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:21:14,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 10:21:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:14,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:14,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:14,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:14,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:14,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:14,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:14,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:14,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:21:14,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 10:21:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:14,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:14,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:14,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:14,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:14,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:14,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:14,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:14,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:14,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:14,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:14,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:21:14,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 10:21:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:14,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:14,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:14,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:21:14,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:14,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:21:14,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:14,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:14,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:14,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:14,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:14,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:21:14,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 10:21:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:14,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:14,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:14,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:14,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 10:21:14,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:21:14,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 10:21:14,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:14,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:14,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:21:14,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:21:14,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 10:21:14,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:14,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:21:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:14,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:14,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:14,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 10:21:14,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:14,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:21:14,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:14,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:14,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:21:14,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:21:14,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:21:14,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:21:14,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 10:21:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:14,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:14,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:14,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:21:14,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:14,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:21:14,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:14,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:21:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-14 10:21:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:21:14,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:21:14,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 10:21:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:14,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:14,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:14,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 10:21:14,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:14,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:14,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:14,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:14,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:14,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 10:21:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:14,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:21:14,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 10:21:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:14,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:14,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:14,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:21:14,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:14,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:14,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:14,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:14,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:14,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:21:14,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:14,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:21:14,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-14 10:21:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:21:14,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:21:14,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:21:14,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 10:21:14,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:21:14,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:21:14,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:21:14,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:21:14,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:21:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 10:21:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:21:14,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:21:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 10:21:14,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531593807] [2020-10-14 10:21:14,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:21:14,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 10:21:14,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340992666] [2020-10-14 10:21:14,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 10:21:14,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:21:14,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 10:21:14,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-14 10:21:14,455 INFO L87 Difference]: Start difference. First operand 1065 states and 1240 transitions. Second operand 11 states. [2020-10-14 10:21:16,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:21:16,841 INFO L93 Difference]: Finished difference Result 1907 states and 2255 transitions. [2020-10-14 10:21:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 10:21:16,841 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 230 [2020-10-14 10:21:16,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:21:16,845 INFO L225 Difference]: With dead ends: 1907 [2020-10-14 10:21:16,845 INFO L226 Difference]: Without dead ends: 1262 [2020-10-14 10:21:16,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2020-10-14 10:21:16,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2020-10-14 10:21:16,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1196. [2020-10-14 10:21:16,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2020-10-14 10:21:16,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1380 transitions. [2020-10-14 10:21:16,929 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1380 transitions. Word has length 230 [2020-10-14 10:21:16,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:21:16,930 INFO L479 AbstractCegarLoop]: Abstraction has 1196 states and 1380 transitions. [2020-10-14 10:21:16,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 10:21:16,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1380 transitions. [2020-10-14 10:21:16,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-14 10:21:16,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:21:16,932 INFO L422 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:21:16,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 10:21:16,932 INFO L427 AbstractCegarLoop]: === Iteration 32 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:21:16,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:21:16,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1516237140, now seen corresponding path program 1 times [2020-10-14 10:21:16,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:21:16,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305996151] [2020-10-14 10:21:16,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:21:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 10:21:16,955 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 10:21:16,955 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 10:21:16,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 10:21:17,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 10:21:17 BoogieIcfgContainer [2020-10-14 10:21:17,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 10:21:17,006 INFO L168 Benchmark]: Toolchain (without parser) took 183089.63 ms. Allocated memory was 147.3 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 103.1 MB in the beginning and 356.9 MB in the end (delta: -253.9 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2020-10-14 10:21:17,007 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 10:21:17,007 INFO L168 Benchmark]: CACSL2BoogieTranslator took 458.41 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 102.6 MB in the beginning and 181.4 MB in the end (delta: -78.7 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-10-14 10:21:17,008 INFO L168 Benchmark]: Boogie Preprocessor took 55.57 ms. Allocated memory is still 204.5 MB. Free memory was 181.4 MB in the beginning and 178.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-10-14 10:21:17,008 INFO L168 Benchmark]: RCFGBuilder took 655.42 ms. Allocated memory is still 204.5 MB. Free memory was 178.5 MB in the beginning and 135.1 MB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. [2020-10-14 10:21:17,009 INFO L168 Benchmark]: TraceAbstraction took 181914.77 ms. Allocated memory was 204.5 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 135.1 MB in the beginning and 356.9 MB in the end (delta: -221.9 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2020-10-14 10:21:17,011 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 458.41 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 102.6 MB in the beginning and 181.4 MB in the end (delta: -78.7 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.57 ms. Allocated memory is still 204.5 MB. Free memory was 181.4 MB in the beginning and 178.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 655.42 ms. Allocated memory is still 204.5 MB. Free memory was 178.5 MB in the beginning and 135.1 MB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 181914.77 ms. Allocated memory was 204.5 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 135.1 MB in the beginning and 356.9 MB in the end (delta: -221.9 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L18] int c ; [L19] int c_t ; [L20] int c_req_up ; [L21] int p_in ; [L22] int p_out ; [L23] int wl_st ; [L24] int c1_st ; [L25] int c2_st ; [L26] int wb_st ; [L27] int r_st ; [L28] int wl_i ; [L29] int c1_i ; [L30] int c2_i ; [L31] int wb_i ; [L32] int r_i ; [L33] int wl_pc ; [L34] int c1_pc ; [L35] int c2_pc ; [L36] int wb_pc ; [L37] int e_e ; [L38] int e_f ; [L39] int e_g ; [L40] int e_c ; [L41] int e_p_in ; [L42] int e_wl ; [L48] int d ; [L49] int data ; [L50] int processed ; [L51] static int t_b ; [L679] int __retres1 ; [L683] e_wl = 2 [L684] e_c = e_wl [L685] e_g = e_c [L686] e_f = e_g [L687] e_e = e_f [L688] wl_pc = 0 [L689] c1_pc = 0 [L690] c2_pc = 0 [L691] wb_pc = 0 [L692] wb_i = 1 [L693] c2_i = wb_i [L694] c1_i = c2_i [L695] wl_i = c1_i [L696] r_i = 0 [L697] c_req_up = 0 [L698] d = 0 [L699] c = 0 [L700] CALL start_simulation() [L390] int kernel_st ; [L393] kernel_st = 0 [L394] COND FALSE !((int )c_req_up == 1) [L405] COND TRUE (int )wl_i == 1 [L406] wl_st = 0 [L410] COND TRUE (int )c1_i == 1 [L411] c1_st = 0 [L415] COND TRUE (int )c2_i == 1 [L416] c2_st = 0 [L420] COND TRUE (int )wb_i == 1 [L421] wb_st = 0 [L425] COND FALSE !((int )r_i == 1) [L428] r_st = 2 [L430] COND FALSE !((int )e_f == 0) [L435] COND FALSE !((int )e_g == 0) [L440] COND FALSE !((int )e_e == 0) [L445] COND FALSE !((int )e_c == 0) [L450] COND FALSE !((int )e_wl == 0) [L455] COND FALSE !((int )wl_pc == 1) [L463] COND FALSE !((int )wl_pc == 2) [L473] COND FALSE !((int )c1_pc == 1) [L482] COND FALSE !((int )c2_pc == 1) [L491] COND FALSE !((int )wb_pc == 1) [L500] COND FALSE !((int )e_c == 1) [L505] COND FALSE !((int )e_e == 1) [L510] COND FALSE !((int )e_f == 1) [L515] COND FALSE !((int )e_g == 1) [L520] COND FALSE !((int )e_c == 1) [L525] COND FALSE !((int )e_wl == 1) [L531] COND TRUE 1 [L534] kernel_st = 1 [L535] CALL eval() [L276] int tmp ; [L277] int tmp___0 ; [L278] int tmp___1 ; [L279] int tmp___2 ; [L280] int tmp___3 ; [L284] COND TRUE 1 [L286] COND TRUE (int )wl_st == 0 [L307] COND TRUE (int )wl_st == 0 [L309] tmp = __VERIFIER_nondet_int() [L311] COND TRUE \read(tmp) [L313] wl_st = 1 [L314] CALL write_loop() [L53] int t ; [L56] COND TRUE (int )wl_pc == 0 [L70] wl_st = 2 [L71] wl_pc = 1 [L72] e_wl = 0 [L314] RET write_loop() [L322] COND TRUE (int )c1_st == 0 [L324] tmp___0 = __VERIFIER_nondet_int() [L326] COND TRUE \read(tmp___0) [L328] c1_st = 1 [L329] CALL compute1() [L127] COND TRUE (int )c1_pc == 0 [L138] COND TRUE 1 [L140] c1_st = 2 [L141] c1_pc = 1 [L329] RET compute1() [L337] COND TRUE (int )c2_st == 0 [L339] tmp___1 = __VERIFIER_nondet_int() [L341] COND TRUE \read(tmp___1) [L343] c2_st = 1 [L344] CALL compute2() [L172] COND TRUE (int )c2_pc == 0 [L183] COND TRUE 1 [L185] c2_st = 2 [L186] c2_pc = 1 [L344] RET compute2() [L352] COND TRUE (int )wb_st == 0 [L354] tmp___2 = __VERIFIER_nondet_int() [L356] COND TRUE \read(tmp___2) [L358] wb_st = 1 [L359] CALL write_back() [L217] COND TRUE (int )wb_pc == 0 [L228] COND TRUE 1 [L230] wb_st = 2 [L231] wb_pc = 1 [L359] RET write_back() [L367] COND FALSE !((int )r_st == 0) [L284] COND TRUE 1 [L286] COND FALSE !((int )wl_st == 0) [L289] COND FALSE !((int )c1_st == 0) [L292] COND FALSE !((int )c2_st == 0) [L295] COND FALSE !((int )wb_st == 0) [L298] COND FALSE !((int )r_st == 0) [L535] RET eval() [L537] kernel_st = 2 [L538] COND FALSE !((int )c_req_up == 1) [L549] kernel_st = 3 [L550] COND FALSE !((int )e_f == 0) [L555] COND FALSE !((int )e_g == 0) [L560] COND FALSE !((int )e_e == 0) [L565] COND FALSE !((int )e_c == 0) [L570] COND TRUE (int )e_wl == 0 [L571] e_wl = 1 [L575] COND TRUE (int )wl_pc == 1 [L576] COND TRUE (int )e_wl == 1 [L577] wl_st = 0 [L593] COND TRUE (int )c1_pc == 1 [L594] COND FALSE !((int )e_f == 1) [L602] COND TRUE (int )c2_pc == 1 [L603] COND FALSE !((int )e_f == 1) [L611] COND TRUE (int )wb_pc == 1 [L612] COND FALSE !((int )e_g == 1) [L620] COND FALSE !((int )e_c == 1) [L625] COND FALSE !((int )e_e == 1) [L630] COND FALSE !((int )e_f == 1) [L635] COND FALSE !((int )e_g == 1) [L640] COND FALSE !((int )e_c == 1) [L645] COND TRUE (int )e_wl == 1 [L646] e_wl = 2 [L650] COND TRUE (int )wl_st == 0 [L531] COND TRUE 1 [L534] kernel_st = 1 [L535] CALL eval() [L276] int tmp ; [L277] int tmp___0 ; [L278] int tmp___1 ; [L279] int tmp___2 ; [L280] int tmp___3 ; [L284] COND TRUE 1 [L286] COND TRUE (int )wl_st == 0 [L307] COND TRUE (int )wl_st == 0 [L309] tmp = __VERIFIER_nondet_int() [L311] COND TRUE \read(tmp) [L313] wl_st = 1 [L314] CALL write_loop() [L53] int t ; [L56] COND FALSE !((int )wl_pc == 0) [L59] COND FALSE !((int )wl_pc == 2) [L62] COND TRUE (int )wl_pc == 1 [L77] COND TRUE 1 [L79] t = d [L80] data = d [L81] processed = 0 [L82] e_f = 1 [L83] COND TRUE (int )c1_pc == 1 [L84] COND TRUE (int )e_f == 1 [L85] c1_st = 0 [L92] COND TRUE (int )c2_pc == 1 [L93] COND TRUE (int )e_f == 1 [L94] c2_st = 0 [L101] e_f = 2 [L102] wl_st = 2 [L103] wl_pc = 2 [L104] t_b = t [L314] RET write_loop() [L322] COND TRUE (int )c1_st == 0 [L324] tmp___0 = __VERIFIER_nondet_int() [L326] COND TRUE \read(tmp___0) [L328] c1_st = 1 [L329] CALL compute1() [L127] COND FALSE !((int )c1_pc == 0) [L130] COND TRUE (int )c1_pc == 1 [L145] COND TRUE ! processed [L146] data += 1 [L147] e_g = 1 [L148] COND TRUE (int )wb_pc == 1 [L149] COND TRUE (int )e_g == 1 [L150] wb_st = 0 [L157] e_g = 2 [L138] COND TRUE 1 [L140] c1_st = 2 [L141] c1_pc = 1 [L329] RET compute1() [L337] COND TRUE (int )c2_st == 0 [L339] tmp___1 = __VERIFIER_nondet_int() [L341] COND TRUE \read(tmp___1) [L343] c2_st = 1 [L344] CALL compute2() [L172] COND FALSE !((int )c2_pc == 0) [L175] COND TRUE (int )c2_pc == 1 [L190] COND TRUE ! processed [L191] data += 1 [L192] e_g = 1 [L193] COND TRUE (int )wb_pc == 1 [L194] COND TRUE (int )e_g == 1 [L195] wb_st = 0 [L202] e_g = 2 [L183] COND TRUE 1 [L185] c2_st = 2 [L186] c2_pc = 1 [L344] RET compute2() [L352] COND TRUE (int )wb_st == 0 [L354] tmp___2 = __VERIFIER_nondet_int() [L356] COND TRUE \read(tmp___2) [L358] wb_st = 1 [L359] CALL write_back() [L217] COND FALSE !((int )wb_pc == 0) [L220] COND TRUE (int )wb_pc == 1 [L235] c_t = data [L236] c_req_up = 1 [L237] processed = 1 [L228] COND TRUE 1 [L230] wb_st = 2 [L231] wb_pc = 1 [L359] RET write_back() [L367] COND FALSE !((int )r_st == 0) [L284] COND TRUE 1 [L286] COND FALSE !((int )wl_st == 0) [L289] COND FALSE !((int )c1_st == 0) [L292] COND FALSE !((int )c2_st == 0) [L295] COND FALSE !((int )wb_st == 0) [L298] COND FALSE !((int )r_st == 0) [L535] RET eval() [L537] kernel_st = 2 [L538] COND TRUE (int )c_req_up == 1 [L539] COND TRUE c != c_t [L540] c = c_t [L541] e_c = 0 [L545] c_req_up = 0 [L549] kernel_st = 3 [L550] COND FALSE !((int )e_f == 0) [L555] COND FALSE !((int )e_g == 0) [L560] COND FALSE !((int )e_e == 0) [L565] COND TRUE (int )e_c == 0 [L566] e_c = 1 [L570] COND FALSE !((int )e_wl == 0) [L575] COND FALSE !((int )wl_pc == 1) [L583] COND TRUE (int )wl_pc == 2 [L584] COND FALSE !((int )e_e == 1) [L593] COND TRUE (int )c1_pc == 1 [L594] COND FALSE !((int )e_f == 1) [L602] COND TRUE (int )c2_pc == 1 [L603] COND FALSE !((int )e_f == 1) [L611] COND TRUE (int )wb_pc == 1 [L612] COND FALSE !((int )e_g == 1) [L620] COND TRUE (int )e_c == 1 [L621] r_st = 0 [L625] COND FALSE !((int )e_e == 1) [L630] COND FALSE !((int )e_f == 1) [L635] COND FALSE !((int )e_g == 1) [L640] COND TRUE (int )e_c == 1 [L641] e_c = 2 [L645] COND FALSE !((int )e_wl == 1) [L650] COND FALSE !((int )wl_st == 0) [L653] COND FALSE !((int )c1_st == 0) [L656] COND FALSE !((int )c2_st == 0) [L659] COND FALSE !((int )wb_st == 0) [L662] COND TRUE (int )r_st == 0 [L531] COND TRUE 1 [L534] kernel_st = 1 [L535] CALL eval() [L276] int tmp ; [L277] int tmp___0 ; [L278] int tmp___1 ; [L279] int tmp___2 ; [L280] int tmp___3 ; [L284] COND TRUE 1 [L286] COND FALSE !((int )wl_st == 0) [L289] COND FALSE !((int )c1_st == 0) [L292] COND FALSE !((int )c2_st == 0) [L295] COND FALSE !((int )wb_st == 0) [L298] COND TRUE (int )r_st == 0 [L307] COND FALSE !((int )wl_st == 0) [L322] COND FALSE !((int )c1_st == 0) [L337] COND FALSE !((int )c2_st == 0) [L352] COND FALSE !((int )wb_st == 0) [L367] COND TRUE (int )r_st == 0 [L369] tmp___3 = __VERIFIER_nondet_int() [L371] COND TRUE \read(tmp___3) [L373] r_st = 1 [L374] CALL read() [L249] d = c [L250] e_e = 1 [L251] COND FALSE !((int )wl_pc == 1) [L259] COND TRUE (int )wl_pc == 2 [L260] COND TRUE (int )e_e == 1 [L261] wl_st = 0 [L269] e_e = 2 [L270] r_st = 2 [L374] RET read() [L284] COND TRUE 1 [L286] COND TRUE (int )wl_st == 0 [L307] COND TRUE (int )wl_st == 0 [L309] tmp = __VERIFIER_nondet_int() [L311] COND TRUE \read(tmp) [L313] wl_st = 1 [L314] CALL write_loop() [L53] int t ; [L56] COND FALSE !((int )wl_pc == 0) [L59] COND TRUE (int )wl_pc == 2 [L108] t = t_b [L109] COND FALSE !(d == t + 1) [L113] CALL error() [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 158 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 181.8s, OverallIterations: 32, TraceHistogramMax: 6, AutomataDifference: 56.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5570 SDtfs, 21006 SDslu, 9452 SDs, 0 SdLazy, 21490 SolverSat, 3996 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 25.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 909 GetRequests, 461 SyntacticMatches, 2 SemanticMatches, 446 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2443 ImplicationChecksByTransitivity, 13.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12116occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.2s AutomataMinimizationTime, 31 MinimizatonAttempts, 26794 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 110.2s InterpolantComputationTime, 3506 NumberOfCodeBlocks, 3506 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 3242 ConstructedInterpolants, 0 QuantifiedInterpolants, 1326797 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 31 InterpolantComputations, 25 PerfectInterpolantSequences, 843/857 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...