/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=BIGGEST --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/mem_slave_tlm.3.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 21:00:43,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 21:00:43,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 21:00:43,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 21:00:43,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 21:00:43,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 21:00:43,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 21:00:43,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 21:00:43,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 21:00:43,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 21:00:43,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 21:00:43,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 21:00:43,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 21:00:43,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 21:00:43,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 21:00:43,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 21:00:43,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 21:00:43,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 21:00:43,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 21:00:43,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 21:00:43,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 21:00:43,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 21:00:43,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 21:00:43,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 21:00:43,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 21:00:43,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 21:00:43,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 21:00:43,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 21:00:43,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 21:00:43,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 21:00:43,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 21:00:43,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 21:00:43,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 21:00:43,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 21:00:43,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 21:00:43,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 21:00:43,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 21:00:43,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 21:00:43,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 21:00:43,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 21:00:43,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 21:00:43,540 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 [2020-10-12 21:00:43,563 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 21:00:43,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 21:00:43,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 21:00:43,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 21:00:43,565 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 21:00:43,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 21:00:43,566 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 21:00:43,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 21:00:43,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 21:00:43,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 21:00:43,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 21:00:43,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 21:00:43,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 21:00:43,567 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 21:00:43,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 21:00:43,567 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 21:00:43,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 21:00:43,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 21:00:43,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 21:00:43,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 21:00:43,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 21:00:43,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 21:00:43,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 21:00:43,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 21:00:43,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 21:00:43,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 21:00:43,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 21:00:43,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 21:00:43,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 21:00:43,570 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 21:00:43,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 21:00:43,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 21:00:43,872 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 21:00:43,873 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 21:00:43,874 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 21:00:43,875 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.3.cil.c [2020-10-12 21:00:43,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/701723865/c7533592df874458a9ddbe8c0be28a84/FLAG9fd314dea [2020-10-12 21:00:44,529 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 21:00:44,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/mem_slave_tlm.3.cil.c [2020-10-12 21:00:44,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/701723865/c7533592df874458a9ddbe8c0be28a84/FLAG9fd314dea [2020-10-12 21:00:44,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/701723865/c7533592df874458a9ddbe8c0be28a84 [2020-10-12 21:00:44,796 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 21:00:44,798 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 21:00:44,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 21:00:44,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 21:00:44,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 21:00:44,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:00:44" (1/1) ... [2020-10-12 21:00:44,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f4f222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:44, skipping insertion in model container [2020-10-12 21:00:44,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:00:44" (1/1) ... [2020-10-12 21:00:44,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 21:00:44,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 21:00:45,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 21:00:45,227 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 21:00:45,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 21:00:45,470 INFO L208 MainTranslator]: Completed translation [2020-10-12 21:00:45,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:45 WrapperNode [2020-10-12 21:00:45,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 21:00:45,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 21:00:45,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 21:00:45,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 21:00:45,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:45" (1/1) ... [2020-10-12 21:00:45,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:45" (1/1) ... [2020-10-12 21:00:45,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:45" (1/1) ... [2020-10-12 21:00:45,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:45" (1/1) ... [2020-10-12 21:00:45,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:45" (1/1) ... [2020-10-12 21:00:45,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:45" (1/1) ... [2020-10-12 21:00:45,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:45" (1/1) ... [2020-10-12 21:00:45,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 21:00:45,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 21:00:45,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 21:00:45,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 21:00:45,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:45" (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 [2020-10-12 21:00:45,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 21:00:45,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 21:00:45,649 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-12 21:00:45,649 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_read [2020-10-12 21:00:45,649 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_write [2020-10-12 21:00:45,649 INFO L138 BoogieDeclarations]: Found implementation of procedure m_run [2020-10-12 21:00:45,650 INFO L138 BoogieDeclarations]: Found implementation of procedure s_run [2020-10-12 21:00:45,651 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-12 21:00:45,652 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-12 21:00:45,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 21:00:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 21:00:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 21:00:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-12 21:00:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_read [2020-10-12 21:00:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_write [2020-10-12 21:00:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure m_run [2020-10-12 21:00:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure s_run [2020-10-12 21:00:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-12 21:00:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-12 21:00:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 21:00:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 21:00:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 21:00:46,782 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 21:00:46,782 INFO L295 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-12 21:00:46,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:00:46 BoogieIcfgContainer [2020-10-12 21:00:46,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 21:00:46,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 21:00:46,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 21:00:46,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 21:00:46,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:00:44" (1/3) ... [2020-10-12 21:00:46,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b11a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:00:46, skipping insertion in model container [2020-10-12 21:00:46,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:45" (2/3) ... [2020-10-12 21:00:46,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b11a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:00:46, skipping insertion in model container [2020-10-12 21:00:46,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:00:46" (3/3) ... [2020-10-12 21:00:46,799 INFO L109 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.3.cil.c [2020-10-12 21:00:46,810 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 21:00:46,819 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 21:00:46,834 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 21:00:46,862 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 21:00:46,863 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 21:00:46,863 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 21:00:46,863 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 21:00:46,863 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 21:00:46,864 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 21:00:46,864 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 21:00:46,864 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 21:00:46,891 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states. [2020-10-12 21:00:46,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 21:00:46,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:46,905 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] [2020-10-12 21:00:46,906 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:46,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:46,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1983901195, now seen corresponding path program 1 times [2020-10-12 21:00:46,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:46,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399082249] [2020-10-12 21:00:46,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:47,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:47,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:47,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:47,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:47,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:47,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:48,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:48,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:48,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:49,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:50,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:50,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:50,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:51,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:52,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:52,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 21:00:52,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 21:00:52,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 21:00:52,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:52,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:00:52,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:00:52,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 21:00:52,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 21:00:52,471 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:00:52,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:52,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:52,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:52,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:52,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:52,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 21:00:52,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:52,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:52,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:52,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:52,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:00:52,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:00:52,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399082249] [2020-10-12 21:00:52,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:52,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 21:00:52,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222741338] [2020-10-12 21:00:52,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 21:00:52,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:52,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 21:00:52,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 21:00:52,579 INFO L87 Difference]: Start difference. First operand 302 states. Second operand 4 states. [2020-10-12 21:00:52,944 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 21:00:55,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:55,000 INFO L93 Difference]: Finished difference Result 879 states and 1567 transitions. [2020-10-12 21:00:55,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:55,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-12 21:00:55,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:55,023 INFO L225 Difference]: With dead ends: 879 [2020-10-12 21:00:55,023 INFO L226 Difference]: Without dead ends: 574 [2020-10-12 21:00:55,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:55,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-10-12 21:00:55,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 500. [2020-10-12 21:00:55,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-10-12 21:00:55,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 772 transitions. [2020-10-12 21:00:55,157 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 772 transitions. Word has length 39 [2020-10-12 21:00:55,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:55,158 INFO L479 AbstractCegarLoop]: Abstraction has 500 states and 772 transitions. [2020-10-12 21:00:55,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 21:00:55,158 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 772 transitions. [2020-10-12 21:00:55,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 21:00:55,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:55,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:00:55,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 21:00:55,164 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:55,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:55,164 INFO L82 PathProgramCache]: Analyzing trace with hash 729027308, now seen corresponding path program 1 times [2020-10-12 21:00:55,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:55,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832502886] [2020-10-12 21:00:55,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:55,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:55,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:55,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:55,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:55,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:56,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:56,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:00,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:00,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 21:01:00,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 21:01:00,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 21:01:00,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:00,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 21:01:00,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 21:01:00,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 21:01:00,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:00,496 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:01:00,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:00,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:00,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:00,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:00,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:00,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 21:01:00,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:01:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:00,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 21:01:00,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:01:00,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:01:00,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832502886] [2020-10-12 21:01:00,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:00,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:01:00,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514465068] [2020-10-12 21:01:00,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 21:01:00,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:00,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 21:01:00,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 21:01:00,564 INFO L87 Difference]: Start difference. First operand 500 states and 772 transitions. Second operand 7 states. [2020-10-12 21:01:00,763 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 21:01:01,504 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 21:01:01,673 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 21:01:03,184 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:01:03,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:03,349 INFO L93 Difference]: Finished difference Result 1486 states and 2286 transitions. [2020-10-12 21:01:03,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 21:01:03,350 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-10-12 21:01:03,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:03,358 INFO L225 Difference]: With dead ends: 1486 [2020-10-12 21:01:03,358 INFO L226 Difference]: Without dead ends: 1006 [2020-10-12 21:01:03,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-12 21:01:03,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-10-12 21:01:03,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 860. [2020-10-12 21:01:03,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 860 states. [2020-10-12 21:01:03,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1343 transitions. [2020-10-12 21:01:03,444 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1343 transitions. Word has length 51 [2020-10-12 21:01:03,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:03,444 INFO L479 AbstractCegarLoop]: Abstraction has 860 states and 1343 transitions. [2020-10-12 21:01:03,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 21:01:03,445 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1343 transitions. [2020-10-12 21:01:03,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 21:01:03,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:03,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:03,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 21:01:03,448 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:03,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:03,449 INFO L82 PathProgramCache]: Analyzing trace with hash 146418637, now seen corresponding path program 1 times [2020-10-12 21:01:03,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:03,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309566956] [2020-10-12 21:01:03,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:03,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:03,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:03,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:03,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:03,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:03,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:04,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:05,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:06,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:06,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:08,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:08,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 21:01:08,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 21:01:08,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 21:01:08,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:08,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 21:01:08,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 21:01:08,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 21:01:08,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:08,738 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:01:08,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:08,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:08,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:08,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:08,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:08,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 21:01:08,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:08,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:01:08,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:08,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 21:01:08,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:01:08,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:01:08,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309566956] [2020-10-12 21:01:08,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:08,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:01:08,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554493015] [2020-10-12 21:01:08,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 21:01:08,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:08,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 21:01:08,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 21:01:08,795 INFO L87 Difference]: Start difference. First operand 860 states and 1343 transitions. Second operand 7 states. [2020-10-12 21:01:08,943 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:01:09,605 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 21:01:09,791 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-12 21:01:11,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:11,180 INFO L93 Difference]: Finished difference Result 1839 states and 2848 transitions. [2020-10-12 21:01:11,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 21:01:11,181 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-12 21:01:11,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:11,198 INFO L225 Difference]: With dead ends: 1839 [2020-10-12 21:01:11,198 INFO L226 Difference]: Without dead ends: 999 [2020-10-12 21:01:11,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-12 21:01:11,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2020-10-12 21:01:11,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 856. [2020-10-12 21:01:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 856 states. [2020-10-12 21:01:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1333 transitions. [2020-10-12 21:01:11,298 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1333 transitions. Word has length 52 [2020-10-12 21:01:11,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:11,298 INFO L479 AbstractCegarLoop]: Abstraction has 856 states and 1333 transitions. [2020-10-12 21:01:11,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 21:01:11,298 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1333 transitions. [2020-10-12 21:01:11,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 21:01:11,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:11,302 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:11,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 21:01:11,302 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:11,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:11,303 INFO L82 PathProgramCache]: Analyzing trace with hash 854760174, now seen corresponding path program 1 times [2020-10-12 21:01:11,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:11,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592505143] [2020-10-12 21:01:11,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:11,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:11,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:11,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:11,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:11,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:11,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:11,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:12,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:12,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:12,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:12,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:13,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:16,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:16,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 21:01:16,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 21:01:16,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 21:01:16,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 21:01:16,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:01:16,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 21:01:16,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:01:16,508 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:01:16,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:16,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:16,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:16,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:16,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:16,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 21:01:16,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:16,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:16,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:16,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:16,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:16,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:01:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:16,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:16,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:16,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:01:16,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:16,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 21:01:16,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:16,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:16,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:01:16,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 21:01:16,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 21:01:16,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592505143] [2020-10-12 21:01:16,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:01:16,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 21:01:16,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678978658] [2020-10-12 21:01:16,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:01:16,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:16,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:01:16,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:01:16,641 INFO L87 Difference]: Start difference. First operand 856 states and 1333 transitions. Second operand 6 states. [2020-10-12 21:01:16,790 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:01:19,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:19,092 INFO L93 Difference]: Finished difference Result 2714 states and 4391 transitions. [2020-10-12 21:01:19,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 21:01:19,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-12 21:01:19,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:19,112 INFO L225 Difference]: With dead ends: 2714 [2020-10-12 21:01:19,113 INFO L226 Difference]: Without dead ends: 1878 [2020-10-12 21:01:19,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 21:01:19,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2020-10-12 21:01:19,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1650. [2020-10-12 21:01:19,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1650 states. [2020-10-12 21:01:19,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2581 transitions. [2020-10-12 21:01:19,307 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2581 transitions. Word has length 61 [2020-10-12 21:01:19,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:19,310 INFO L479 AbstractCegarLoop]: Abstraction has 1650 states and 2581 transitions. [2020-10-12 21:01:19,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:01:19,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2581 transitions. [2020-10-12 21:01:19,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-12 21:01:19,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:19,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:19,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 21:01:19,316 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:19,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:19,316 INFO L82 PathProgramCache]: Analyzing trace with hash 343875935, now seen corresponding path program 1 times [2020-10-12 21:01:19,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:19,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284199165] [2020-10-12 21:01:19,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:19,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:19,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:19,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:19,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:19,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:19,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:19,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:20,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:24,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:24,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 21:01:24,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 21:01:24,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 21:01:24,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:01:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:01:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 21:01:24,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:24,533 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:01:24,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:24,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:24,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:24,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:24,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:24,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 21:01:24,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:24,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:24,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:24,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:24,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 21:01:24,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:01:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:24,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:24,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:24,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:01:24,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:24,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 21:01:24,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:24,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:01:24,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:24,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 21:01:24,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:01:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:01:24,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284199165] [2020-10-12 21:01:24,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:24,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:01:24,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961755058] [2020-10-12 21:01:24,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:01:24,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:24,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:01:24,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:01:24,728 INFO L87 Difference]: Start difference. First operand 1650 states and 2581 transitions. Second operand 5 states. [2020-10-12 21:01:24,937 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 21:01:27,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:27,240 INFO L93 Difference]: Finished difference Result 4159 states and 6549 transitions. [2020-10-12 21:01:27,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 21:01:27,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-10-12 21:01:27,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:27,267 INFO L225 Difference]: With dead ends: 4159 [2020-10-12 21:01:27,268 INFO L226 Difference]: Without dead ends: 2526 [2020-10-12 21:01:27,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 21:01:27,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2020-10-12 21:01:27,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 2418. [2020-10-12 21:01:27,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2418 states. [2020-10-12 21:01:27,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3701 transitions. [2020-10-12 21:01:27,615 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3701 transitions. Word has length 75 [2020-10-12 21:01:27,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:27,615 INFO L479 AbstractCegarLoop]: Abstraction has 2418 states and 3701 transitions. [2020-10-12 21:01:27,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:01:27,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3701 transitions. [2020-10-12 21:01:27,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-12 21:01:27,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:27,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:27,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 21:01:27,621 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:27,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:27,621 INFO L82 PathProgramCache]: Analyzing trace with hash -192595338, now seen corresponding path program 1 times [2020-10-12 21:01:27,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:27,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672948640] [2020-10-12 21:01:27,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:27,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:27,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:27,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:28,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:30,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:30,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 21:01:30,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:01:30,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2634 [2020-10-12 21:01:30,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:01:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:01:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 21:01:30,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:30,438 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:01:30,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:30,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:30,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:30,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:30,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:30,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:01:30,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:30,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:30,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:30,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:30,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:01:30,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:01:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:30,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:30,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:30,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:01:30,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:30,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 21:01:30,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:30,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:30,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:01:30,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 21:01:30,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:01:30,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:01:30,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672948640] [2020-10-12 21:01:30,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:30,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:01:30,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355960400] [2020-10-12 21:01:30,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:01:30,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:30,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:01:30,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:01:30,614 INFO L87 Difference]: Start difference. First operand 2418 states and 3701 transitions. Second operand 6 states. [2020-10-12 21:01:30,777 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 21:01:32,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:32,576 INFO L93 Difference]: Finished difference Result 5142 states and 8271 transitions. [2020-10-12 21:01:32,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 21:01:32,577 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-10-12 21:01:32,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:32,603 INFO L225 Difference]: With dead ends: 5142 [2020-10-12 21:01:32,603 INFO L226 Difference]: Without dead ends: 2742 [2020-10-12 21:01:32,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 21:01:32,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742 states. [2020-10-12 21:01:32,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742 to 2418. [2020-10-12 21:01:32,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2418 states. [2020-10-12 21:01:32,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3633 transitions. [2020-10-12 21:01:32,912 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3633 transitions. Word has length 75 [2020-10-12 21:01:32,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:32,912 INFO L479 AbstractCegarLoop]: Abstraction has 2418 states and 3633 transitions. [2020-10-12 21:01:32,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:01:32,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3633 transitions. [2020-10-12 21:01:32,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-12 21:01:32,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:32,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:32,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 21:01:32,919 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:32,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:32,919 INFO L82 PathProgramCache]: Analyzing trace with hash -667190195, now seen corresponding path program 1 times [2020-10-12 21:01:32,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:32,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502733939] [2020-10-12 21:01:32,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:32,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:32,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:33,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:33,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:33,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 21:01:33,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:01:33,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-10-12 21:01:33,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 21:01:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 21:01:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 21:01:33,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:33,676 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:01:33,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:33,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:33,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:33,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:33,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:33,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 21:01:33,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:33,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:33,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:01:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:33,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:33,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:33,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:01:33,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:33,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 21:01:33,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:33,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:33,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:33,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 21:01:33,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:01:33,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502733939] [2020-10-12 21:01:33,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:33,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 21:01:33,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499695628] [2020-10-12 21:01:33,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 21:01:33,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:33,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 21:01:33,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 21:01:33,900 INFO L87 Difference]: Start difference. First operand 2418 states and 3633 transitions. Second operand 10 states. [2020-10-12 21:01:34,046 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:01:34,342 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 21:01:34,539 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 21:01:34,856 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 21:01:35,035 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 21:01:35,945 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 21:01:36,174 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 21:01:36,515 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 21:01:37,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:37,314 INFO L93 Difference]: Finished difference Result 5434 states and 8423 transitions. [2020-10-12 21:01:37,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 21:01:37,315 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 76 [2020-10-12 21:01:37,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:37,335 INFO L225 Difference]: With dead ends: 5434 [2020-10-12 21:01:37,336 INFO L226 Difference]: Without dead ends: 3034 [2020-10-12 21:01:37,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2020-10-12 21:01:37,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2020-10-12 21:01:37,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 2825. [2020-10-12 21:01:37,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2825 states. [2020-10-12 21:01:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 4320 transitions. [2020-10-12 21:01:37,581 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 4320 transitions. Word has length 76 [2020-10-12 21:01:37,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:37,583 INFO L479 AbstractCegarLoop]: Abstraction has 2825 states and 4320 transitions. [2020-10-12 21:01:37,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 21:01:37,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 4320 transitions. [2020-10-12 21:01:37,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 21:01:37,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:37,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:37,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 21:01:37,589 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:37,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:37,590 INFO L82 PathProgramCache]: Analyzing trace with hash -186650996, now seen corresponding path program 1 times [2020-10-12 21:01:37,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:37,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250614622] [2020-10-12 21:01:37,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:37,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:37,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:38,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:38,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 21:01:38,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:01:38,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-12 21:01:38,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:38,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 21:01:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 21:01:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 21:01:38,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:38,273 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:01:38,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:38,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:38,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:38,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:38,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:38,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:01:38,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:38,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:38,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:38,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:38,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:38,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:01:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:38,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:38,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:38,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:01:38,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:38,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 21:01:38,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:38,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:38,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:38,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 21:01:38,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:38,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:01:38,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250614622] [2020-10-12 21:01:38,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:38,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 21:01:38,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189885780] [2020-10-12 21:01:38,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 21:01:38,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:38,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 21:01:38,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 21:01:38,505 INFO L87 Difference]: Start difference. First operand 2825 states and 4320 transitions. Second operand 10 states. [2020-10-12 21:01:38,649 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:01:38,977 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 21:01:39,157 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 21:01:39,568 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 21:01:39,750 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-12 21:01:40,806 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 21:01:41,004 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 21:01:42,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:42,561 INFO L93 Difference]: Finished difference Result 4515 states and 6982 transitions. [2020-10-12 21:01:42,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 21:01:42,562 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-10-12 21:01:42,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:42,579 INFO L225 Difference]: With dead ends: 4515 [2020-10-12 21:01:42,579 INFO L226 Difference]: Without dead ends: 3021 [2020-10-12 21:01:42,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2020-10-12 21:01:42,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2020-10-12 21:01:42,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2817. [2020-10-12 21:01:42,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2817 states. [2020-10-12 21:01:42,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2817 states to 2817 states and 4300 transitions. [2020-10-12 21:01:42,809 INFO L78 Accepts]: Start accepts. Automaton has 2817 states and 4300 transitions. Word has length 77 [2020-10-12 21:01:42,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:42,809 INFO L479 AbstractCegarLoop]: Abstraction has 2817 states and 4300 transitions. [2020-10-12 21:01:42,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 21:01:42,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2817 states and 4300 transitions. [2020-10-12 21:01:42,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 21:01:42,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:42,816 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:42,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 21:01:42,816 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:42,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:42,817 INFO L82 PathProgramCache]: Analyzing trace with hash -372932356, now seen corresponding path program 1 times [2020-10-12 21:01:42,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:42,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674889923] [2020-10-12 21:01:42,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:42,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:42,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:42,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:42,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:43,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:43,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:43,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:43,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:43,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:43,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:43,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:44,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:47,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:47,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 21:01:47,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 21:01:47,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 21:01:47,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:47,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:01:47,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-12 21:01:47,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 21:01:47,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 21:01:48,079 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:01:48,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:48,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:48,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:48,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:48,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:48,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:01:48,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:48,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:01:48,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:01:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:48,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:48,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:48,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:01:48,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:48,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 21:01:48,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:48,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:01:48,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:48,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 21:01:48,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 21:01:48,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 21:01:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:48,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:48,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:48,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 21:01:48,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 21:01:48,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:48,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:01:48,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:01:48,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 21:01:48,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:48,346 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 21:01:48,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674889923] [2020-10-12 21:01:48,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:01:48,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 21:01:48,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30981144] [2020-10-12 21:01:48,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 21:01:48,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:48,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 21:01:48,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 21:01:48,349 INFO L87 Difference]: Start difference. First operand 2817 states and 4300 transitions. Second operand 11 states. [2020-10-12 21:01:48,729 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 21:01:49,134 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 21:01:49,705 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 135 [2020-10-12 21:01:50,820 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 133 [2020-10-12 21:01:51,930 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 136 [2020-10-12 21:01:52,989 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-12 21:01:54,491 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 21:01:55,354 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 21:01:55,587 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 21:01:56,311 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 21:01:56,492 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 21:01:56,944 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:01:57,207 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 21:01:58,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:58,759 INFO L93 Difference]: Finished difference Result 8017 states and 12854 transitions. [2020-10-12 21:01:58,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-12 21:01:58,759 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 86 [2020-10-12 21:01:58,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:58,801 INFO L225 Difference]: With dead ends: 8017 [2020-10-12 21:01:58,802 INFO L226 Difference]: Without dead ends: 6531 [2020-10-12 21:01:58,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=387, Invalid=1965, Unknown=0, NotChecked=0, Total=2352 [2020-10-12 21:01:58,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6531 states. [2020-10-12 21:01:59,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6531 to 5649. [2020-10-12 21:01:59,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5649 states. [2020-10-12 21:01:59,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5649 states to 5649 states and 8987 transitions. [2020-10-12 21:01:59,399 INFO L78 Accepts]: Start accepts. Automaton has 5649 states and 8987 transitions. Word has length 86 [2020-10-12 21:01:59,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:59,400 INFO L479 AbstractCegarLoop]: Abstraction has 5649 states and 8987 transitions. [2020-10-12 21:01:59,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 21:01:59,400 INFO L276 IsEmpty]: Start isEmpty. Operand 5649 states and 8987 transitions. [2020-10-12 21:01:59,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 21:01:59,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:59,407 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:01:59,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 21:01:59,408 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:59,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:59,408 INFO L82 PathProgramCache]: Analyzing trace with hash 345407421, now seen corresponding path program 1 times [2020-10-12 21:01:59,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:59,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306549050] [2020-10-12 21:01:59,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:59,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:59,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:59,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:59,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:59,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:00,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:00,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:00,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:00,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:01,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:01,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:04,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:04,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 21:02:04,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 21:02:04,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 21:02:04,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:04,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:02:04,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:02:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 21:02:04,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:04,602 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:02:04,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:02:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:04,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:04,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:04,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:02:04,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:04,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:02:04,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:04,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:04,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:04,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:04,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:04,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:02:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:04,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:04,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:04,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:02:04,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:04,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 21:02:04,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:04,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:02:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:02:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 21:02:04,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:04,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 21:02:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:04,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:04,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:04,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 21:02:04,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:04,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:02:04,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:04,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:04,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 21:02:04,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:04,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:04,743 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 21:02:04,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306549050] [2020-10-12 21:02:04,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:02:04,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 21:02:04,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035687558] [2020-10-12 21:02:04,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 21:02:04,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:02:04,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 21:02:04,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 21:02:04,746 INFO L87 Difference]: Start difference. First operand 5649 states and 8987 transitions. Second operand 7 states. [2020-10-12 21:02:04,885 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 21:02:05,546 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 21:02:08,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:02:08,034 INFO L93 Difference]: Finished difference Result 17004 states and 31580 transitions. [2020-10-12 21:02:08,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 21:02:08,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 87 [2020-10-12 21:02:08,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:02:08,134 INFO L225 Difference]: With dead ends: 17004 [2020-10-12 21:02:08,134 INFO L226 Difference]: Without dead ends: 11763 [2020-10-12 21:02:08,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-12 21:02:08,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11763 states. [2020-10-12 21:02:09,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11763 to 10376. [2020-10-12 21:02:09,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10376 states. [2020-10-12 21:02:09,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10376 states to 10376 states and 18866 transitions. [2020-10-12 21:02:09,130 INFO L78 Accepts]: Start accepts. Automaton has 10376 states and 18866 transitions. Word has length 87 [2020-10-12 21:02:09,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:02:09,130 INFO L479 AbstractCegarLoop]: Abstraction has 10376 states and 18866 transitions. [2020-10-12 21:02:09,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 21:02:09,130 INFO L276 IsEmpty]: Start isEmpty. Operand 10376 states and 18866 transitions. [2020-10-12 21:02:09,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 21:02:09,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:02:09,141 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:02:09,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 21:02:09,141 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:02:09,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:02:09,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1495595889, now seen corresponding path program 1 times [2020-10-12 21:02:09,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:02:09,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826631417] [2020-10-12 21:02:09,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:02:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:09,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:09,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:09,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:09,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:09,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:09,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:10,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:10,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:14,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:14,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 21:02:14,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 21:02:14,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 21:02:14,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:14,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:02:14,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:02:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 21:02:14,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:14,299 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:02:14,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:02:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:14,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:14,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:14,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:02:14,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:14,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:02:14,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:14,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:14,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:14,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:14,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:14,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:02:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:14,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:14,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:14,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 21:02:14,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:14,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 21:02:14,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:02:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:02:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 21:02:14,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:14,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 21:02:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:14,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:14,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:14,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 21:02:14,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:14,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:02:14,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:14,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:14,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 21:02:14,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:14,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:14,432 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 21:02:14,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826631417] [2020-10-12 21:02:14,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:02:14,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 21:02:14,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394339110] [2020-10-12 21:02:14,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 21:02:14,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:02:14,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 21:02:14,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 21:02:14,435 INFO L87 Difference]: Start difference. First operand 10376 states and 18866 transitions. Second operand 7 states. [2020-10-12 21:02:14,579 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 21:02:15,138 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 21:02:17,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:02:17,671 INFO L93 Difference]: Finished difference Result 25763 states and 54904 transitions. [2020-10-12 21:02:17,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 21:02:17,673 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-10-12 21:02:17,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:02:17,871 INFO L225 Difference]: With dead ends: 25763 [2020-10-12 21:02:17,871 INFO L226 Difference]: Without dead ends: 15524 [2020-10-12 21:02:18,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-12 21:02:18,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15524 states. [2020-10-12 21:02:20,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15524 to 11688. [2020-10-12 21:02:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11688 states. [2020-10-12 21:02:20,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11688 states to 11688 states and 23056 transitions. [2020-10-12 21:02:20,593 INFO L78 Accepts]: Start accepts. Automaton has 11688 states and 23056 transitions. Word has length 90 [2020-10-12 21:02:20,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:02:20,594 INFO L479 AbstractCegarLoop]: Abstraction has 11688 states and 23056 transitions. [2020-10-12 21:02:20,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 21:02:20,594 INFO L276 IsEmpty]: Start isEmpty. Operand 11688 states and 23056 transitions. [2020-10-12 21:02:20,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 21:02:20,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:02:20,603 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 21:02:20,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 21:02:20,603 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:02:20,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:02:20,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1278485680, now seen corresponding path program 1 times [2020-10-12 21:02:20,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:02:20,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245284320] [2020-10-12 21:02:20,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:02:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:20,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:20,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:20,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:20,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:20,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:22,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:22,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:22,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:25,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:25,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 21:02:25,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 21:02:25,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 21:02:25,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:25,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:02:25,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:02:25,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 21:02:25,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:25,779 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:02:25,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:02:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:25,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:25,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:25,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:02:25,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:25,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:02:25,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:25,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:25,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:25,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:25,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:25,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:02:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:25,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:25,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:25,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:02:25,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:25,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 21:02:25,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:02:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 21:02:25,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:25,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 21:02:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:25,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:25,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:25,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 21:02:25,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:25,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 21:02:25,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:25,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:02:25,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 21:02:25,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 21:02:25,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:25,930 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 21:02:25,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245284320] [2020-10-12 21:02:25,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:02:25,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:02:25,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616909733] [2020-10-12 21:02:25,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:02:25,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:02:25,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:02:25,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:02:25,933 INFO L87 Difference]: Start difference. First operand 11688 states and 23056 transitions. Second operand 6 states. [2020-10-12 21:02:26,070 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:02:29,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:02:29,228 INFO L93 Difference]: Finished difference Result 23378 states and 50461 transitions. [2020-10-12 21:02:29,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 21:02:29,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-12 21:02:29,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:02:29,703 INFO L225 Difference]: With dead ends: 23378 [2020-10-12 21:02:29,703 INFO L226 Difference]: Without dead ends: 11888 [2020-10-12 21:02:29,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 21:02:29,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11888 states. [2020-10-12 21:02:31,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11888 to 11688. [2020-10-12 21:02:31,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11688 states. [2020-10-12 21:02:32,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11688 states to 11688 states and 22650 transitions. [2020-10-12 21:02:32,010 INFO L78 Accepts]: Start accepts. Automaton has 11688 states and 22650 transitions. Word has length 102 [2020-10-12 21:02:32,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:02:32,012 INFO L479 AbstractCegarLoop]: Abstraction has 11688 states and 22650 transitions. [2020-10-12 21:02:32,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:02:32,012 INFO L276 IsEmpty]: Start isEmpty. Operand 11688 states and 22650 transitions. [2020-10-12 21:02:32,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 21:02:32,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:02:32,021 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:02:32,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 21:02:32,022 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:02:32,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:02:32,022 INFO L82 PathProgramCache]: Analyzing trace with hash -901227241, now seen corresponding path program 1 times [2020-10-12 21:02:32,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:02:32,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767961038] [2020-10-12 21:02:32,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:02:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:32,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:32,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:32,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:32,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:32,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:32,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:32,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:35,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:36,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:37,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:37,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 21:02:37,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 21:02:37,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 21:02:37,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:37,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:02:37,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:02:37,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 21:02:37,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:37,216 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:02:37,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:02:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:37,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:37,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:37,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:02:37,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:37,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:02:37,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:37,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:37,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:02:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:37,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:37,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:37,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:02:37,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:37,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 21:02:37,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:02:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 21:02:37,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:37,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 21:02:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:37,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:37,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:37,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:37,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:37,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 21:02:37,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:02:37,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 21:02:37,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:37,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:02:37,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 21:02:37,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:02:37,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:37,365 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 21:02:37,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767961038] [2020-10-12 21:02:37,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:02:37,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:02:37,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179069911] [2020-10-12 21:02:37,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:02:37,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:02:37,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:02:37,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:02:37,367 INFO L87 Difference]: Start difference. First operand 11688 states and 22650 transitions. Second operand 6 states. [2020-10-12 21:02:37,505 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 21:02:37,951 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:02:41,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:02:41,027 INFO L93 Difference]: Finished difference Result 30891 states and 72781 transitions. [2020-10-12 21:02:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 21:02:41,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-12 21:02:41,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:02:41,256 INFO L225 Difference]: With dead ends: 30891 [2020-10-12 21:02:41,257 INFO L226 Difference]: Without dead ends: 19401 [2020-10-12 21:02:41,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-12 21:02:41,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19401 states. [2020-10-12 21:02:44,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19401 to 18707. [2020-10-12 21:02:44,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18707 states. [2020-10-12 21:02:44,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18707 states to 18707 states and 38797 transitions. [2020-10-12 21:02:44,282 INFO L78 Accepts]: Start accepts. Automaton has 18707 states and 38797 transitions. Word has length 103 [2020-10-12 21:02:44,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:02:44,283 INFO L479 AbstractCegarLoop]: Abstraction has 18707 states and 38797 transitions. [2020-10-12 21:02:44,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:02:44,283 INFO L276 IsEmpty]: Start isEmpty. Operand 18707 states and 38797 transitions. [2020-10-12 21:02:44,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 21:02:44,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:02:44,293 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-10-12 21:02:44,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 21:02:44,293 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:02:44,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:02:44,294 INFO L82 PathProgramCache]: Analyzing trace with hash -17276166, now seen corresponding path program 1 times [2020-10-12 21:02:44,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:02:44,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135921621] [2020-10-12 21:02:44,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:02:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:44,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:44,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:44,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:44,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:44,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:44,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:44,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:44,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:44,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:45,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:45,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:47,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:47,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:47,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:48,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:48,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:48,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:48,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:48,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:48,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:49,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:49,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-12 21:02:49,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-12 21:02:49,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 21:02:49,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:49,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:02:49,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 21:02:49,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 21:02:49,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:49,448 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:02:49,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:02:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:49,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:49,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:49,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:02:49,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:49,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:02:49,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:49,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:49,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:49,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:49,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:49,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 21:02:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:49,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:49,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:49,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:49,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:49,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:49,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:49,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:49,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 21:02:49,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 21:02:49,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 21:02:49,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:49,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:02:49,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:02:49,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 21:02:49,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:49,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:02:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:49,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:49,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:49,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 21:02:49,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:49,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:02:49,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:02:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:02:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 21:02:49,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:49,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 21:02:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:49,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:49,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:51,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:51,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 21:02:51,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:02:51,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1384 [2020-10-12 21:02:51,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:51,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:02:51,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-12 21:02:51,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 21:02:51,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:51,129 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 21:02:51,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135921621] [2020-10-12 21:02:51,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:02:51,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 21:02:51,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955739681] [2020-10-12 21:02:51,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 21:02:51,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:02:51,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 21:02:51,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 21:02:51,131 INFO L87 Difference]: Start difference. First operand 18707 states and 38797 transitions. Second operand 8 states. [2020-10-12 21:02:51,274 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 21:02:51,446 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 21:02:51,819 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 21:02:57,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:02:57,969 INFO L93 Difference]: Finished difference Result 71983 states and 218727 transitions. [2020-10-12 21:02:57,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 21:02:57,970 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-12 21:02:57,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:02:58,616 INFO L225 Difference]: With dead ends: 71983 [2020-10-12 21:02:58,616 INFO L226 Difference]: Without dead ends: 53294 [2020-10-12 21:02:59,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-10-12 21:02:59,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53294 states. [2020-10-12 21:03:07,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53294 to 49708. [2020-10-12 21:03:07,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49708 states. [2020-10-12 21:03:08,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49708 states to 49708 states and 136200 transitions. [2020-10-12 21:03:08,496 INFO L78 Accepts]: Start accepts. Automaton has 49708 states and 136200 transitions. Word has length 124 [2020-10-12 21:03:08,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:03:08,496 INFO L479 AbstractCegarLoop]: Abstraction has 49708 states and 136200 transitions. [2020-10-12 21:03:08,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 21:03:08,497 INFO L276 IsEmpty]: Start isEmpty. Operand 49708 states and 136200 transitions. [2020-10-12 21:03:08,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 21:03:08,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:03:08,522 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:03:08,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 21:03:08,522 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:03:08,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:03:08,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1789262070, now seen corresponding path program 1 times [2020-10-12 21:03:08,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:03:08,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6546882] [2020-10-12 21:03:08,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:03:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:03:08,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:08,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:08,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:08,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:09,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:09,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:09,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:09,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:13,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:03:13,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 21:03:13,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 21:03:13,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 21:03:13,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:03:13,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:03:13,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 21:03:13,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 21:03:13,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:03:13,689 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:03:13,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:03:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:03:13,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:13,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:03:13,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:03:13,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:03:13,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:03:13,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:03:13,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:03:13,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:03:13,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:03:13,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:03:13,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:03:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:03:13,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:13,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:03:13,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:03:13,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:03:13,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 21:03:13,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:03:13,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:03:13,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:03:13,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 21:03:13,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:03:13,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 21:03:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:03:13,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:13,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:03:13,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 21:03:13,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:03:13,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:03:13,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:03:13,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:03:13,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 21:03:13,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:03:13,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:03:13,813 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 21:03:13,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6546882] [2020-10-12 21:03:13,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:03:13,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 21:03:13,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364313178] [2020-10-12 21:03:13,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:03:13,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:03:13,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:03:13,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:03:13,815 INFO L87 Difference]: Start difference. First operand 49708 states and 136200 transitions. Second operand 6 states. [2020-10-12 21:03:13,957 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 21:03:24,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:03:24,440 INFO L93 Difference]: Finished difference Result 138327 states and 443250 transitions. [2020-10-12 21:03:24,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 21:03:24,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-12 21:03:24,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:03:25,201 INFO L225 Difference]: With dead ends: 138327 [2020-10-12 21:03:25,201 INFO L226 Difference]: Without dead ends: 88646 [2020-10-12 21:03:26,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 21:03:26,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88646 states. [2020-10-12 21:03:49,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88646 to 76229. [2020-10-12 21:03:49,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76229 states. [2020-10-12 21:03:51,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76229 states to 76229 states and 215729 transitions. [2020-10-12 21:03:51,631 INFO L78 Accepts]: Start accepts. Automaton has 76229 states and 215729 transitions. Word has length 106 [2020-10-12 21:03:51,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:03:51,632 INFO L479 AbstractCegarLoop]: Abstraction has 76229 states and 215729 transitions. [2020-10-12 21:03:51,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:03:51,632 INFO L276 IsEmpty]: Start isEmpty. Operand 76229 states and 215729 transitions. [2020-10-12 21:03:51,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 21:03:51,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:03:51,654 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:03:51,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 21:03:51,654 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:03:51,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:03:51,655 INFO L82 PathProgramCache]: Analyzing trace with hash -188190964, now seen corresponding path program 1 times [2020-10-12 21:03:51,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:03:51,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867111501] [2020-10-12 21:03:51,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:03:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:03:51,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:51,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:51,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:51,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:51,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:51,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:51,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:52,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:52,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:52,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:56,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:03:56,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 21:03:56,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 21:03:56,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 21:03:56,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:03:56,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:03:56,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 21:03:56,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 21:03:56,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:03:56,820 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 21:03:56,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:03:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:03:56,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:56,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:03:56,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:03:56,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:03:56,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:03:56,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:03:56,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:03:56,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:03:56,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:03:56,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:03:56,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:03:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:03:56,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:56,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:03:56,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:03:56,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:03:56,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 21:03:56,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:03:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:03:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:03:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 21:03:56,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:03:56,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 21:03:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:03:56,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:56,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:03:56,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 21:03:56,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:03:56,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 21:03:56,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:03:56,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:03:56,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:03:56,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 21:03:56,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:03:57,023 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 21:03:57,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867111501] [2020-10-12 21:03:57,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:03:57,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 21:03:57,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100335528] [2020-10-12 21:03:57,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 21:03:57,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:03:57,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 21:03:57,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 21:03:57,025 INFO L87 Difference]: Start difference. First operand 76229 states and 215729 transitions. Second operand 8 states. [2020-10-12 21:03:57,220 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 132