/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=NARROWEST --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/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:55:02,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:55:02,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:55:02,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:55:02,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:55:02,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:55:02,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:55:02,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:55:02,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:55:02,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:55:02,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:55:02,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:55:02,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:55:02,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:55:02,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:55:02,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:55:02,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:55:02,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:55:02,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:55:02,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:55:02,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:55:02,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:55:02,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:55:02,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:55:02,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:55:02,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:55:02,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:55:02,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:55:02,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:55:02,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:55:02,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:55:02,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:55:02,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:55:02,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:55:02,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:55:02,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:55:02,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:55:02,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:55:02,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:55:02,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:55:02,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:55:02,503 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 [2020-10-13 13:55:02,524 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:55:02,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:55:02,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:55:02,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:55:02,526 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:55:02,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:55:02,526 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:55:02,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:55:02,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:55:02,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:55:02,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:55:02,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:55:02,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:55:02,528 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:55:02,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:55:02,528 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:55:02,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:55:02,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:55:02,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:55:02,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:55:02,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:55:02,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:55:02,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:55:02,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:55:02,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:55:02,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:55:02,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:55:02,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:55:02,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:55:02,531 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:55:02,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:55:02,900 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:55:02,905 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:55:02,907 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:55:02,909 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:55:02,910 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 13:55:02,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39a0b533b/8e78c997c8114a2dae848014928002b7/FLAG8bb38e7b5 [2020-10-13 13:55:03,551 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:55:03,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 13:55:03,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39a0b533b/8e78c997c8114a2dae848014928002b7/FLAG8bb38e7b5 [2020-10-13 13:55:03,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39a0b533b/8e78c997c8114a2dae848014928002b7 [2020-10-13 13:55:03,796 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:55:03,797 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:55:03,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:55:03,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:55:03,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:55:03,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:55:03" (1/1) ... [2020-10-13 13:55:03,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@184fc857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:03, skipping insertion in model container [2020-10-13 13:55:03,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:55:03" (1/1) ... [2020-10-13 13:55:03,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:55:03,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:55:04,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:55:04,636 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:55:04,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:55:05,013 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:55:05,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:05 WrapperNode [2020-10-13 13:55:05,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:55:05,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:55:05,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:55:05,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:55:05,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:05" (1/1) ... [2020-10-13 13:55:05,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:05" (1/1) ... [2020-10-13 13:55:05,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:05" (1/1) ... [2020-10-13 13:55:05,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:05" (1/1) ... [2020-10-13 13:55:05,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:05" (1/1) ... [2020-10-13 13:55:05,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:05" (1/1) ... [2020-10-13 13:55:05,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:05" (1/1) ... [2020-10-13 13:55:05,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:55:05,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:55:05,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:55:05,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:55:05,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:05" (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 [2020-10-13 13:55:05,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:55:05,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:55:05,224 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:55:05,225 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:55:05,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:55:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:55:05,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 13:55:05,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:55:05,228 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:55:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:55:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:55:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:55:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:55:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:55:05,230 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:55:05,231 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:55:05,231 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:55:05,231 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:55:05,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:55:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:55:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:55:06,766 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:55:06,766 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 13:55:06,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:55:06 BoogieIcfgContainer [2020-10-13 13:55:06,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:55:06,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:55:06,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:55:06,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:55:06,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:55:03" (1/3) ... [2020-10-13 13:55:06,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef10e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:55:06, skipping insertion in model container [2020-10-13 13:55:06,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:05" (2/3) ... [2020-10-13 13:55:06,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef10e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:55:06, skipping insertion in model container [2020-10-13 13:55:06,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:55:06" (3/3) ... [2020-10-13 13:55:06,784 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 13:55:06,796 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:55:06,804 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-13 13:55:06,819 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-13 13:55:06,848 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:55:06,848 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:55:06,849 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:55:06,849 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:55:06,849 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:55:06,849 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:55:06,849 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:55:06,850 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:55:06,879 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states. [2020-10-13 13:55:06,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-13 13:55:06,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:06,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:55:06,900 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:06,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:06,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1760839587, now seen corresponding path program 1 times [2020-10-13 13:55:06,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:06,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491672864] [2020-10-13 13:55:06,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:07,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:07,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:08,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:08,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:08,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:08,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:08,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:08,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:09,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:09,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:10,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:10,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:12,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:12,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 13:55:12,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:55:12,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 13:55:12,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:12,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:55:12,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:55:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 13:55:12,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:55:13,009 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:55:13,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:13,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:13,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:13,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:13,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:13,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:55:13,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:13,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:13,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:13,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:13,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491672864] [2020-10-13 13:55:13,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:13,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:55:13,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567674688] [2020-10-13 13:55:13,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:55:13,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:13,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:55:13,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:55:13,124 INFO L87 Difference]: Start difference. First operand 393 states. Second operand 5 states. [2020-10-13 13:55:17,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:17,570 INFO L93 Difference]: Finished difference Result 1124 states and 2019 transitions. [2020-10-13 13:55:17,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:55:17,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-13 13:55:17,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:17,603 INFO L225 Difference]: With dead ends: 1124 [2020-10-13 13:55:17,603 INFO L226 Difference]: Without dead ends: 752 [2020-10-13 13:55:17,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:55:17,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2020-10-13 13:55:17,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 726. [2020-10-13 13:55:17,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 726 states. [2020-10-13 13:55:17,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1036 transitions. [2020-10-13 13:55:17,754 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1036 transitions. Word has length 145 [2020-10-13 13:55:17,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:17,755 INFO L479 AbstractCegarLoop]: Abstraction has 726 states and 1036 transitions. [2020-10-13 13:55:17,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:55:17,755 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1036 transitions. [2020-10-13 13:55:17,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 13:55:17,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:17,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:55:17,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:55:17,773 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:17,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:17,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1594631139, now seen corresponding path program 1 times [2020-10-13 13:55:17,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:17,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009538650] [2020-10-13 13:55:17,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:17,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:17,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:18,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:18,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:18,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:18,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:18,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:19,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:20,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:22,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:22,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 13:55:22,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:55:22,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 13:55:22,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:55:22,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:55:22,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:55:22,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 13:55:23,119 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:55:23,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:23,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:23,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:23,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:23,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:23,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:55:23,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:23,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:23,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:23,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:23,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:23,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:23,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009538650] [2020-10-13 13:55:23,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:23,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:55:23,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523997705] [2020-10-13 13:55:23,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:55:23,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:23,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:55:23,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:55:23,173 INFO L87 Difference]: Start difference. First operand 726 states and 1036 transitions. Second operand 4 states. [2020-10-13 13:55:26,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:26,315 INFO L93 Difference]: Finished difference Result 2132 states and 3036 transitions. [2020-10-13 13:55:26,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:55:26,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-10-13 13:55:26,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:26,325 INFO L225 Difference]: With dead ends: 2132 [2020-10-13 13:55:26,326 INFO L226 Difference]: Without dead ends: 1438 [2020-10-13 13:55:26,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:55:26,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2020-10-13 13:55:26,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 728. [2020-10-13 13:55:26,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-10-13 13:55:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1038 transitions. [2020-10-13 13:55:26,399 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1038 transitions. Word has length 146 [2020-10-13 13:55:26,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:26,400 INFO L479 AbstractCegarLoop]: Abstraction has 728 states and 1038 transitions. [2020-10-13 13:55:26,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:55:26,400 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1038 transitions. [2020-10-13 13:55:26,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-13 13:55:26,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:26,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:55:26,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:55:26,404 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:26,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:26,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1701113495, now seen corresponding path program 1 times [2020-10-13 13:55:26,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:26,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369718421] [2020-10-13 13:55:26,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:26,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:26,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:26,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:26,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:26,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:26,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:26,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:26,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:27,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:27,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:27,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:27,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:29,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:29,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:30,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:31,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:31,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 13:55:31,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 13:55:31,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:55:31,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:31,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:55:31,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:55:31,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:55:31,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:31,889 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:55:31,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:31,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:31,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:31,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:31,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:31,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:55:31,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:31,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:31,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:55:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:32,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369718421] [2020-10-13 13:55:32,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:32,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:55:32,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162452451] [2020-10-13 13:55:32,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:55:32,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:32,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:55:32,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:55:32,007 INFO L87 Difference]: Start difference. First operand 728 states and 1038 transitions. Second operand 5 states. [2020-10-13 13:55:35,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:35,428 INFO L93 Difference]: Finished difference Result 2115 states and 3008 transitions. [2020-10-13 13:55:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:55:35,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-13 13:55:35,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:35,438 INFO L225 Difference]: With dead ends: 2115 [2020-10-13 13:55:35,438 INFO L226 Difference]: Without dead ends: 1403 [2020-10-13 13:55:35,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:55:35,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2020-10-13 13:55:35,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1381. [2020-10-13 13:55:35,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1381 states. [2020-10-13 13:55:35,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1952 transitions. [2020-10-13 13:55:35,541 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1952 transitions. Word has length 147 [2020-10-13 13:55:35,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:35,541 INFO L479 AbstractCegarLoop]: Abstraction has 1381 states and 1952 transitions. [2020-10-13 13:55:35,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:55:35,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1952 transitions. [2020-10-13 13:55:35,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-13 13:55:35,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:35,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:55:35,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:55:35,547 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:35,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:35,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1664685500, now seen corresponding path program 1 times [2020-10-13 13:55:35,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:35,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702096262] [2020-10-13 13:55:35,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:35,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:35,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:35,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:35,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:35,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:36,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:36,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:36,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:36,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:36,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:36,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:40,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:40,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 13:55:40,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:55:40,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 13:55:40,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:40,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:55:40,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 13:55:40,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:55:40,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:40,904 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:55:40,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:40,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:40,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:40,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:40,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:40,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:55:40,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:40,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:40,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:40,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702096262] [2020-10-13 13:55:40,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:40,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:55:40,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057032728] [2020-10-13 13:55:40,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:55:40,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:40,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:55:40,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:55:40,962 INFO L87 Difference]: Start difference. First operand 1381 states and 1952 transitions. Second operand 5 states. [2020-10-13 13:55:42,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:42,538 INFO L93 Difference]: Finished difference Result 2411 states and 3397 transitions. [2020-10-13 13:55:42,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:55:42,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-13 13:55:42,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:42,545 INFO L225 Difference]: With dead ends: 2411 [2020-10-13 13:55:42,546 INFO L226 Difference]: Without dead ends: 1064 [2020-10-13 13:55:42,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:55:42,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2020-10-13 13:55:42,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1063. [2020-10-13 13:55:42,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2020-10-13 13:55:42,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1492 transitions. [2020-10-13 13:55:42,601 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1492 transitions. Word has length 147 [2020-10-13 13:55:42,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:42,601 INFO L479 AbstractCegarLoop]: Abstraction has 1063 states and 1492 transitions. [2020-10-13 13:55:42,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:55:42,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1492 transitions. [2020-10-13 13:55:42,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-13 13:55:42,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:42,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:55:42,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:55:42,605 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:42,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:42,606 INFO L82 PathProgramCache]: Analyzing trace with hash 200453551, now seen corresponding path program 1 times [2020-10-13 13:55:42,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:42,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37514454] [2020-10-13 13:55:42,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:42,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:42,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:42,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:42,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:42,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:42,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:43,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:43,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:44,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:46,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:46,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:46,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:46,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:47,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:47,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:47,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 13:55:47,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:55:47,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:55:47,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:47,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:55:47,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:55:47,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 13:55:47,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:48,037 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:55:48,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:48,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:48,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:48,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:48,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:48,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:55:48,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:48,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:48,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:48,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:48,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:48,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:48,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37514454] [2020-10-13 13:55:48,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:48,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:55:48,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697580083] [2020-10-13 13:55:48,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:55:48,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:48,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:55:48,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:55:48,118 INFO L87 Difference]: Start difference. First operand 1063 states and 1492 transitions. Second operand 5 states. [2020-10-13 13:55:51,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:51,220 INFO L93 Difference]: Finished difference Result 3059 states and 4276 transitions. [2020-10-13 13:55:51,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:55:51,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-13 13:55:51,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:51,231 INFO L225 Difference]: With dead ends: 3059 [2020-10-13 13:55:51,231 INFO L226 Difference]: Without dead ends: 2049 [2020-10-13 13:55:51,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:55:51,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2020-10-13 13:55:51,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 2020. [2020-10-13 13:55:51,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2020 states. [2020-10-13 13:55:51,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 2816 transitions. [2020-10-13 13:55:51,349 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 2816 transitions. Word has length 155 [2020-10-13 13:55:51,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:51,350 INFO L479 AbstractCegarLoop]: Abstraction has 2020 states and 2816 transitions. [2020-10-13 13:55:51,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:55:51,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 2816 transitions. [2020-10-13 13:55:51,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-13 13:55:51,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:51,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:55:51,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:55:51,355 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:51,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:51,355 INFO L82 PathProgramCache]: Analyzing trace with hash -435404459, now seen corresponding path program 1 times [2020-10-13 13:55:51,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:51,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135525538] [2020-10-13 13:55:51,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:51,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:51,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:51,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:51,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:51,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:51,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:51,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:51,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:52,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:52,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:53,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:53,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:53,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:54,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:54,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:54,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:56,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:56,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 13:55:56,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 13:55:56,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 13:55:56,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:56,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:55:56,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:55:56,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:55:56,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:56,689 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:55:56,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:56,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:56,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:56,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:56,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:56,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:55:56,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:56,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:56,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:56,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:55:56,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:56,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135525538] [2020-10-13 13:55:56,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:56,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:55:56,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256679273] [2020-10-13 13:55:56,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:55:56,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:56,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:55:56,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:55:56,765 INFO L87 Difference]: Start difference. First operand 2020 states and 2816 transitions. Second operand 4 states. [2020-10-13 13:55:58,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:58,869 INFO L93 Difference]: Finished difference Result 5954 states and 8287 transitions. [2020-10-13 13:55:58,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:55:58,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-10-13 13:55:58,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:58,888 INFO L225 Difference]: With dead ends: 5954 [2020-10-13 13:55:58,888 INFO L226 Difference]: Without dead ends: 3996 [2020-10-13 13:55:58,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:55:58,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3996 states. [2020-10-13 13:55:59,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3996 to 2026. [2020-10-13 13:55:59,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2026 states. [2020-10-13 13:55:59,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 2822 transitions. [2020-10-13 13:55:59,042 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 2822 transitions. Word has length 156 [2020-10-13 13:55:59,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:59,043 INFO L479 AbstractCegarLoop]: Abstraction has 2026 states and 2822 transitions. [2020-10-13 13:55:59,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:55:59,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 2822 transitions. [2020-10-13 13:55:59,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 13:55:59,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:59,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:55:59,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:55:59,048 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:59,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:59,048 INFO L82 PathProgramCache]: Analyzing trace with hash -900784050, now seen corresponding path program 1 times [2020-10-13 13:55:59,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:59,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431858754] [2020-10-13 13:55:59,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:59,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:59,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:59,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:59,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:59,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:59,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:59,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:59,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:02,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:02,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:04,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:04,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 13:56:04,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:56:04,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 13:56:04,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:04,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:56:04,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 13:56:04,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 13:56:04,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:04,386 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:56:04,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:04,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:04,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:04,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:04,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:04,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:56:04,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:04,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:04,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:04,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:04,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:04,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:04,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431858754] [2020-10-13 13:56:04,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:04,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:56:04,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286629904] [2020-10-13 13:56:04,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:56:04,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:04,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:56:04,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:04,447 INFO L87 Difference]: Start difference. First operand 2026 states and 2822 transitions. Second operand 5 states. [2020-10-13 13:56:06,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:06,030 INFO L93 Difference]: Finished difference Result 3996 states and 5562 transitions. [2020-10-13 13:56:06,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:06,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-13 13:56:06,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:06,041 INFO L225 Difference]: With dead ends: 3996 [2020-10-13 13:56:06,041 INFO L226 Difference]: Without dead ends: 2026 [2020-10-13 13:56:06,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:56:06,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2020-10-13 13:56:06,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2019. [2020-10-13 13:56:06,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 13:56:06,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 2808 transitions. [2020-10-13 13:56:06,184 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 2808 transitions. Word has length 157 [2020-10-13 13:56:06,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:06,184 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 2808 transitions. [2020-10-13 13:56:06,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:56:06,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 2808 transitions. [2020-10-13 13:56:06,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 13:56:06,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:06,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:06,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:56:06,190 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:06,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:06,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1896738601, now seen corresponding path program 1 times [2020-10-13 13:56:06,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:06,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631120986] [2020-10-13 13:56:06,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:06,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:06,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:06,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:06,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:06,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:06,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:06,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:06,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:07,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:07,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:08,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:08,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:09,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:09,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:09,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:09,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:11,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 13:56:11,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 13:56:11,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 13:56:11,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:11,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:56:11,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 13:56:11,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 13:56:11,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:11,506 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:56:11,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:11,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:11,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:11,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:11,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:56:11,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:11,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:11,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:11,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:11,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631120986] [2020-10-13 13:56:11,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:11,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:56:11,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878469128] [2020-10-13 13:56:11,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:56:11,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:11,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:56:11,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:11,564 INFO L87 Difference]: Start difference. First operand 2019 states and 2808 transitions. Second operand 4 states. [2020-10-13 13:56:14,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:14,627 INFO L93 Difference]: Finished difference Result 5483 states and 7665 transitions. [2020-10-13 13:56:14,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:56:14,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-10-13 13:56:14,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:14,642 INFO L225 Difference]: With dead ends: 5483 [2020-10-13 13:56:14,642 INFO L226 Difference]: Without dead ends: 3905 [2020-10-13 13:56:14,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:14,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3905 states. [2020-10-13 13:56:14,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3905 to 3876. [2020-10-13 13:56:14,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3876 states. [2020-10-13 13:56:14,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3876 states to 3876 states and 5346 transitions. [2020-10-13 13:56:14,877 INFO L78 Accepts]: Start accepts. Automaton has 3876 states and 5346 transitions. Word has length 157 [2020-10-13 13:56:14,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:14,878 INFO L479 AbstractCegarLoop]: Abstraction has 3876 states and 5346 transitions. [2020-10-13 13:56:14,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:56:14,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3876 states and 5346 transitions. [2020-10-13 13:56:14,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 13:56:14,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:14,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:14,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:56:14,886 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:14,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:14,887 INFO L82 PathProgramCache]: Analyzing trace with hash 890576794, now seen corresponding path program 1 times [2020-10-13 13:56:14,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:14,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007935723] [2020-10-13 13:56:14,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:14,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:14,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:15,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:15,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:15,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:15,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:15,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:15,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:15,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:15,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:15,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:17,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:19,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:19,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:19,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:19,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:19,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:19,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 13:56:19,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 13:56:19,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:56:19,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:19,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:56:19,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:56:19,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:56:19,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:20,190 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:56:20,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:20,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:20,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:20,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:20,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:20,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:56:20,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:20,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:20,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:20,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:20,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:20,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:20,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007935723] [2020-10-13 13:56:20,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:20,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:56:20,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954832608] [2020-10-13 13:56:20,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:56:20,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:20,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:56:20,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:20,235 INFO L87 Difference]: Start difference. First operand 3876 states and 5346 transitions. Second operand 5 states. [2020-10-13 13:56:22,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:22,327 INFO L93 Difference]: Finished difference Result 8130 states and 11095 transitions. [2020-10-13 13:56:22,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:22,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-13 13:56:22,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:22,341 INFO L225 Difference]: With dead ends: 8130 [2020-10-13 13:56:22,341 INFO L226 Difference]: Without dead ends: 4030 [2020-10-13 13:56:22,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:56:22,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4030 states. [2020-10-13 13:56:22,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4030 to 4001. [2020-10-13 13:56:22,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4001 states. [2020-10-13 13:56:22,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 5436 transitions. [2020-10-13 13:56:22,549 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 5436 transitions. Word has length 157 [2020-10-13 13:56:22,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:22,549 INFO L479 AbstractCegarLoop]: Abstraction has 4001 states and 5436 transitions. [2020-10-13 13:56:22,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:56:22,549 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 5436 transitions. [2020-10-13 13:56:22,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 13:56:22,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:22,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:22,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:56:22,557 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:22,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:22,558 INFO L82 PathProgramCache]: Analyzing trace with hash 211575880, now seen corresponding path program 1 times [2020-10-13 13:56:22,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:22,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008473824] [2020-10-13 13:56:22,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:22,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:22,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:22,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:22,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:22,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:22,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:22,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:23,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:23,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:24,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:24,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:24,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:24,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:24,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:25,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:25,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:25,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:27,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:27,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 13:56:27,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 13:56:27,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:56:27,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:27,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:56:27,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:56:27,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:56:27,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:56:27,859 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:56:27,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:27,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:27,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:27,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:27,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:27,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:56:27,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:27,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:27,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:27,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:27,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:27,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:27,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008473824] [2020-10-13 13:56:27,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:27,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:56:27,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479465103] [2020-10-13 13:56:27,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:56:27,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:27,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:56:27,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:27,892 INFO L87 Difference]: Start difference. First operand 4001 states and 5436 transitions. Second operand 4 states. [2020-10-13 13:56:31,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:31,136 INFO L93 Difference]: Finished difference Result 9695 states and 13168 transitions. [2020-10-13 13:56:31,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:56:31,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-10-13 13:56:31,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:31,166 INFO L225 Difference]: With dead ends: 9695 [2020-10-13 13:56:31,166 INFO L226 Difference]: Without dead ends: 7863 [2020-10-13 13:56:31,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:31,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7863 states. [2020-10-13 13:56:31,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7863 to 4013. [2020-10-13 13:56:31,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4013 states. [2020-10-13 13:56:31,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4013 states to 4013 states and 5448 transitions. [2020-10-13 13:56:31,382 INFO L78 Accepts]: Start accepts. Automaton has 4013 states and 5448 transitions. Word has length 158 [2020-10-13 13:56:31,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:31,383 INFO L479 AbstractCegarLoop]: Abstraction has 4013 states and 5448 transitions. [2020-10-13 13:56:31,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:56:31,383 INFO L276 IsEmpty]: Start isEmpty. Operand 4013 states and 5448 transitions. [2020-10-13 13:56:31,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-13 13:56:31,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:31,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:31,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:56:31,390 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:31,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:31,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1111326367, now seen corresponding path program 1 times [2020-10-13 13:56:31,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:31,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406844558] [2020-10-13 13:56:31,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:31,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:31,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:31,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:31,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:31,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:31,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:31,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:31,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:32,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:32,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:32,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:35,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:35,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:35,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:35,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:36,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:36,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 13:56:36,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 13:56:36,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:56:36,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:56:36,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 13:56:36,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:56:36,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:36,701 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:56:36,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:36,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:36,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:36,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:36,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:36,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:56:36,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:36,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:36,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:36,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406844558] [2020-10-13 13:56:36,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:36,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:56:36,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592607345] [2020-10-13 13:56:36,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:56:36,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:36,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:56:36,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:36,738 INFO L87 Difference]: Start difference. First operand 4013 states and 5448 transitions. Second operand 5 states. [2020-10-13 13:56:38,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:38,404 INFO L93 Difference]: Finished difference Result 4969 states and 6734 transitions. [2020-10-13 13:56:38,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:38,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-13 13:56:38,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:38,411 INFO L225 Difference]: With dead ends: 4969 [2020-10-13 13:56:38,411 INFO L226 Difference]: Without dead ends: 3113 [2020-10-13 13:56:38,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:56:38,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3113 states. [2020-10-13 13:56:38,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3113 to 3103. [2020-10-13 13:56:38,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3103 states. [2020-10-13 13:56:38,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3103 states to 3103 states and 4205 transitions. [2020-10-13 13:56:38,540 INFO L78 Accepts]: Start accepts. Automaton has 3103 states and 4205 transitions. Word has length 159 [2020-10-13 13:56:38,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:38,541 INFO L479 AbstractCegarLoop]: Abstraction has 3103 states and 4205 transitions. [2020-10-13 13:56:38,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:56:38,541 INFO L276 IsEmpty]: Start isEmpty. Operand 3103 states and 4205 transitions. [2020-10-13 13:56:38,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-13 13:56:38,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:38,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:38,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:56:38,547 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:38,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:38,547 INFO L82 PathProgramCache]: Analyzing trace with hash -94910448, now seen corresponding path program 1 times [2020-10-13 13:56:38,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:38,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199039934] [2020-10-13 13:56:38,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:38,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:38,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:38,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:38,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:38,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:38,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:38,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:39,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:40,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:40,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:40,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:40,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:41,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:42,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:42,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:42,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:43,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:43,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 13:56:43,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 13:56:43,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 13:56:43,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:43,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:56:43,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:56:43,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 13:56:43,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:43,865 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:56:43,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:43,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:43,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:43,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:43,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:43,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:56:43,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:43,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:43,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:43,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:43,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:43,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:43,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199039934] [2020-10-13 13:56:43,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:43,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:56:43,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249650793] [2020-10-13 13:56:43,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:56:43,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:43,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:56:43,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:43,910 INFO L87 Difference]: Start difference. First operand 3103 states and 4205 transitions. Second operand 5 states. [2020-10-13 13:56:47,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:47,104 INFO L93 Difference]: Finished difference Result 6768 states and 9261 transitions. [2020-10-13 13:56:47,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:47,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-13 13:56:47,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:47,112 INFO L225 Difference]: With dead ends: 6768 [2020-10-13 13:56:47,113 INFO L226 Difference]: Without dead ends: 4360 [2020-10-13 13:56:47,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:56:47,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4360 states. [2020-10-13 13:56:47,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4360 to 4340. [2020-10-13 13:56:47,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4340 states. [2020-10-13 13:56:47,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4340 states to 4340 states and 5795 transitions. [2020-10-13 13:56:47,379 INFO L78 Accepts]: Start accepts. Automaton has 4340 states and 5795 transitions. Word has length 163 [2020-10-13 13:56:47,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:47,379 INFO L479 AbstractCegarLoop]: Abstraction has 4340 states and 5795 transitions. [2020-10-13 13:56:47,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:56:47,379 INFO L276 IsEmpty]: Start isEmpty. Operand 4340 states and 5795 transitions. [2020-10-13 13:56:47,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-13 13:56:47,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:47,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:47,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:56:47,384 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:47,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:47,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1620056134, now seen corresponding path program 1 times [2020-10-13 13:56:47,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:47,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974443433] [2020-10-13 13:56:47,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:47,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:48,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:49,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:49,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:49,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:50,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:51,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:51,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:51,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:52,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:52,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:52,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:52,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 13:56:52,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 13:56:52,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 13:56:52,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:52,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:56:52,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 13:56:52,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 13:56:52,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:52,787 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:56:52,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:52,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:52,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:52,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:52,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:52,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:56:52,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:52,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:52,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:52,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:52,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:56:52,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:52,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974443433] [2020-10-13 13:56:52,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:52,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:56:52,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535183995] [2020-10-13 13:56:52,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:56:52,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:52,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:56:52,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:52,894 INFO L87 Difference]: Start difference. First operand 4340 states and 5795 transitions. Second operand 4 states. [2020-10-13 13:56:56,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:56,108 INFO L93 Difference]: Finished difference Result 11317 states and 15256 transitions. [2020-10-13 13:56:56,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:56:56,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2020-10-13 13:56:56,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:56,127 INFO L225 Difference]: With dead ends: 11317 [2020-10-13 13:56:56,127 INFO L226 Difference]: Without dead ends: 8124 [2020-10-13 13:56:56,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:56,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8124 states. [2020-10-13 13:56:56,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8124 to 8090. [2020-10-13 13:56:56,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8090 states. [2020-10-13 13:56:56,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8090 states to 8090 states and 10718 transitions. [2020-10-13 13:56:56,684 INFO L78 Accepts]: Start accepts. Automaton has 8090 states and 10718 transitions. Word has length 165 [2020-10-13 13:56:56,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:56,685 INFO L479 AbstractCegarLoop]: Abstraction has 8090 states and 10718 transitions. [2020-10-13 13:56:56,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:56:56,685 INFO L276 IsEmpty]: Start isEmpty. Operand 8090 states and 10718 transitions. [2020-10-13 13:56:56,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-13 13:56:56,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:56,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:56,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:56:56,691 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:56,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:56,692 INFO L82 PathProgramCache]: Analyzing trace with hash 2137298377, now seen corresponding path program 1 times [2020-10-13 13:56:56,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:56,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054073677] [2020-10-13 13:56:56,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:56,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:58,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:58,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:00,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:01,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:01,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 13:57:01,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:57:01,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:57:01,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:01,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:57:01,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:57:01,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:57:01,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:02,011 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:57:02,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:02,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:02,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:02,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:02,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:02,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:57:02,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:02,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:02,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:02,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:02,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:02,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:02,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054073677] [2020-10-13 13:57:02,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:02,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:57:02,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724209495] [2020-10-13 13:57:02,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:57:02,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:02,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:57:02,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:57:02,063 INFO L87 Difference]: Start difference. First operand 8090 states and 10718 transitions. Second operand 5 states. [2020-10-13 13:57:04,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:04,707 INFO L93 Difference]: Finished difference Result 17858 states and 23750 transitions. [2020-10-13 13:57:04,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:57:04,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-13 13:57:04,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:04,731 INFO L225 Difference]: With dead ends: 17858 [2020-10-13 13:57:04,731 INFO L226 Difference]: Without dead ends: 12417 [2020-10-13 13:57:04,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:57:04,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12417 states. [2020-10-13 13:57:05,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12417 to 8074. [2020-10-13 13:57:05,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8074 states. [2020-10-13 13:57:05,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8074 states to 8074 states and 10692 transitions. [2020-10-13 13:57:05,360 INFO L78 Accepts]: Start accepts. Automaton has 8074 states and 10692 transitions. Word has length 165 [2020-10-13 13:57:05,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:05,361 INFO L479 AbstractCegarLoop]: Abstraction has 8074 states and 10692 transitions. [2020-10-13 13:57:05,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:57:05,361 INFO L276 IsEmpty]: Start isEmpty. Operand 8074 states and 10692 transitions. [2020-10-13 13:57:05,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-13 13:57:05,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:05,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:05,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:57:05,367 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:05,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:05,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1197608698, now seen corresponding path program 1 times [2020-10-13 13:57:05,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:05,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126153716] [2020-10-13 13:57:05,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:05,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:05,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:05,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:05,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:05,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:05,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:06,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:07,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:07,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:09,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:09,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:10,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:10,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:10,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 13:57:10,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:57:10,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 13:57:10,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:10,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:57:10,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 13:57:10,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:57:10,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:10,631 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:57:10,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:10,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:10,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:10,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:10,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:10,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:57:10,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:10,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:10,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:10,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126153716] [2020-10-13 13:57:10,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:10,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:57:10,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721293294] [2020-10-13 13:57:10,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:57:10,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:10,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:57:10,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:57:10,666 INFO L87 Difference]: Start difference. First operand 8074 states and 10692 transitions. Second operand 4 states. [2020-10-13 13:57:12,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:12,828 INFO L93 Difference]: Finished difference Result 12813 states and 17027 transitions. [2020-10-13 13:57:12,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:57:12,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-13 13:57:12,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:12,841 INFO L225 Difference]: With dead ends: 12813 [2020-10-13 13:57:12,842 INFO L226 Difference]: Without dead ends: 9954 [2020-10-13 13:57:12,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:57:12,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9954 states. [2020-10-13 13:57:13,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9954 to 7970. [2020-10-13 13:57:13,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7970 states. [2020-10-13 13:57:13,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7970 states to 7970 states and 10568 transitions. [2020-10-13 13:57:13,527 INFO L78 Accepts]: Start accepts. Automaton has 7970 states and 10568 transitions. Word has length 166 [2020-10-13 13:57:13,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:13,527 INFO L479 AbstractCegarLoop]: Abstraction has 7970 states and 10568 transitions. [2020-10-13 13:57:13,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:57:13,527 INFO L276 IsEmpty]: Start isEmpty. Operand 7970 states and 10568 transitions. [2020-10-13 13:57:13,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 13:57:13,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:13,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:13,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 13:57:13,533 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:13,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:13,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1468804318, now seen corresponding path program 1 times [2020-10-13 13:57:13,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:13,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941659936] [2020-10-13 13:57:13,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:13,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:13,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:13,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:13,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:13,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:13,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:13,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:14,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:15,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:15,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:18,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:18,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:18,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:18,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-13 13:57:18,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:57:18,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 13:57:18,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:18,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:57:18,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:57:18,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 13:57:18,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:18,866 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:57:18,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:18,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:18,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:18,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:18,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:18,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:57:18,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:18,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:18,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941659936] [2020-10-13 13:57:18,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:18,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:57:18,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903907587] [2020-10-13 13:57:18,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:57:18,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:18,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:57:18,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:57:18,920 INFO L87 Difference]: Start difference. First operand 7970 states and 10568 transitions. Second operand 5 states. [2020-10-13 13:57:20,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:20,967 INFO L93 Difference]: Finished difference Result 13000 states and 17285 transitions. [2020-10-13 13:57:20,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:57:20,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-13 13:57:20,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:20,977 INFO L225 Difference]: With dead ends: 13000 [2020-10-13 13:57:20,977 INFO L226 Difference]: Without dead ends: 6584 [2020-10-13 13:57:20,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:57:20,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6584 states. [2020-10-13 13:57:21,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6584 to 6576. [2020-10-13 13:57:21,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6576 states. [2020-10-13 13:57:21,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6576 states to 6576 states and 8692 transitions. [2020-10-13 13:57:21,406 INFO L78 Accepts]: Start accepts. Automaton has 6576 states and 8692 transitions. Word has length 167 [2020-10-13 13:57:21,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:21,407 INFO L479 AbstractCegarLoop]: Abstraction has 6576 states and 8692 transitions. [2020-10-13 13:57:21,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:57:21,407 INFO L276 IsEmpty]: Start isEmpty. Operand 6576 states and 8692 transitions. [2020-10-13 13:57:21,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-13 13:57:21,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:21,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:21,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 13:57:21,413 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:21,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:21,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1895694253, now seen corresponding path program 1 times [2020-10-13 13:57:21,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:21,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577259053] [2020-10-13 13:57:21,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:21,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:21,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:21,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:21,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:21,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:21,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:21,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:21,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:21,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:22,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:23,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:23,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:23,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:26,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:26,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:26,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 13:57:26,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:57:26,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 13:57:26,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:57:26,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 13:57:26,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:57:26,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:57:26,819 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:57:26,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:26,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:26,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:26,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:26,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:26,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:57:26,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:26,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:26,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:26,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577259053] [2020-10-13 13:57:26,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:26,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:57:26,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679975229] [2020-10-13 13:57:26,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:57:26,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:26,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:57:26,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:57:26,900 INFO L87 Difference]: Start difference. First operand 6576 states and 8692 transitions. Second operand 4 states. [2020-10-13 13:57:29,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:29,693 INFO L93 Difference]: Finished difference Result 17183 states and 23118 transitions. [2020-10-13 13:57:29,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:57:29,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-10-13 13:57:29,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:29,709 INFO L225 Difference]: With dead ends: 17183 [2020-10-13 13:57:29,710 INFO L226 Difference]: Without dead ends: 12237 [2020-10-13 13:57:29,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:57:29,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12237 states. [2020-10-13 13:57:30,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12237 to 12203. [2020-10-13 13:57:30,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12203 states. [2020-10-13 13:57:30,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12203 states to 12203 states and 16197 transitions. [2020-10-13 13:57:30,448 INFO L78 Accepts]: Start accepts. Automaton has 12203 states and 16197 transitions. Word has length 171 [2020-10-13 13:57:30,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:30,449 INFO L479 AbstractCegarLoop]: Abstraction has 12203 states and 16197 transitions. [2020-10-13 13:57:30,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:57:30,449 INFO L276 IsEmpty]: Start isEmpty. Operand 12203 states and 16197 transitions. [2020-10-13 13:57:30,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-13 13:57:30,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:30,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:30,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 13:57:30,459 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:30,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:30,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1095140759, now seen corresponding path program 1 times [2020-10-13 13:57:30,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:30,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759476889] [2020-10-13 13:57:30,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:30,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:30,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:30,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:30,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:30,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:30,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:30,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:30,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:31,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:31,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:31,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:32,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:32,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:33,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:33,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:33,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:34,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:35,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:35,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:35,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 13:57:35,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 13:57:35,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 13:57:35,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:57:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 13:57:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 13:57:35,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:35,770 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:57:35,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:35,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:35,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:35,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:35,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:35,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:57:35,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:35,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:35,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:35,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:35,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:35,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759476889] [2020-10-13 13:57:35,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:35,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:57:35,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92913197] [2020-10-13 13:57:35,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:57:35,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:35,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:57:35,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:57:35,810 INFO L87 Difference]: Start difference. First operand 12203 states and 16197 transitions. Second operand 7 states. [2020-10-13 13:57:36,063 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:57:44,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:44,160 INFO L93 Difference]: Finished difference Result 63617 states and 87250 transitions. [2020-10-13 13:57:44,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:57:44,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-10-13 13:57:44,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:44,221 INFO L225 Difference]: With dead ends: 63617 [2020-10-13 13:57:44,221 INFO L226 Difference]: Without dead ends: 53090 [2020-10-13 13:57:44,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:57:44,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53090 states. [2020-10-13 13:57:48,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53090 to 45975. [2020-10-13 13:57:48,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45975 states. [2020-10-13 13:57:48,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45975 states to 45975 states and 62653 transitions. [2020-10-13 13:57:48,915 INFO L78 Accepts]: Start accepts. Automaton has 45975 states and 62653 transitions. Word has length 171 [2020-10-13 13:57:48,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:48,915 INFO L479 AbstractCegarLoop]: Abstraction has 45975 states and 62653 transitions. [2020-10-13 13:57:48,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:57:48,916 INFO L276 IsEmpty]: Start isEmpty. Operand 45975 states and 62653 transitions. [2020-10-13 13:57:48,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-13 13:57:48,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:48,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:48,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 13:57:48,944 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:48,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:48,944 INFO L82 PathProgramCache]: Analyzing trace with hash 2139577476, now seen corresponding path program 1 times [2020-10-13 13:57:48,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:48,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973995038] [2020-10-13 13:57:48,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:48,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:49,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:49,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:49,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:49,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:49,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:49,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:49,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:49,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:50,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:50,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:51,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:52,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:53,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:53,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:53,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:53,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:53,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 13:57:53,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 13:57:53,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:57:53,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:57:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:57:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 13:57:53,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:54,256 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:57:54,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:54,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:54,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:54,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:54,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:54,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:57:54,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:57:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:54,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:57:54,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:54,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:54,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973995038] [2020-10-13 13:57:54,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:54,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:57:54,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539913902] [2020-10-13 13:57:54,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:57:54,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:54,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:57:54,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:57:54,325 INFO L87 Difference]: Start difference. First operand 45975 states and 62653 transitions. Second operand 6 states. [2020-10-13 13:57:54,603 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 13:58:00,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:00,137 INFO L93 Difference]: Finished difference Result 84961 states and 119522 transitions. [2020-10-13 13:58:00,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:58:00,138 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-10-13 13:58:00,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:00,209 INFO L225 Difference]: With dead ends: 84961 [2020-10-13 13:58:00,209 INFO L226 Difference]: Without dead ends: 49505 [2020-10-13 13:58:00,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:58:00,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49505 states. [2020-10-13 13:58:04,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49505 to 36791. [2020-10-13 13:58:04,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36791 states. [2020-10-13 13:58:04,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36791 states to 36791 states and 51664 transitions. [2020-10-13 13:58:04,753 INFO L78 Accepts]: Start accepts. Automaton has 36791 states and 51664 transitions. Word has length 171 [2020-10-13 13:58:04,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:04,753 INFO L479 AbstractCegarLoop]: Abstraction has 36791 states and 51664 transitions. [2020-10-13 13:58:04,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:58:04,753 INFO L276 IsEmpty]: Start isEmpty. Operand 36791 states and 51664 transitions. [2020-10-13 13:58:04,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-13 13:58:04,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:04,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:58:04,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 13:58:04,766 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:04,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:04,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1895089091, now seen corresponding path program 1 times [2020-10-13 13:58:04,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:04,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062255533] [2020-10-13 13:58:04,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:04,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:04,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:04,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:04,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:04,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:05,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:05,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:05,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:05,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:05,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:06,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:07,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:09,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:09,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 13:58:09,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:58:09,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 13:58:09,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:09,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:58:09,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:58:09,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 13:58:09,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:10,089 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:58:10,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:10,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:10,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:10,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:10,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:58:10,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:58:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:58:10,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:58:10,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062255533] [2020-10-13 13:58:10,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:10,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:58:10,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633657539] [2020-10-13 13:58:10,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:58:10,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:10,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:58:10,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:58:10,145 INFO L87 Difference]: Start difference. First operand 36791 states and 51664 transitions. Second operand 6 states. [2020-10-13 13:58:10,429 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 13:58:16,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:16,332 INFO L93 Difference]: Finished difference Result 74653 states and 106834 transitions. [2020-10-13 13:58:16,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:58:16,333 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-10-13 13:58:16,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:16,378 INFO L225 Difference]: With dead ends: 74653 [2020-10-13 13:58:16,379 INFO L226 Difference]: Without dead ends: 41136 [2020-10-13 13:58:16,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:58:16,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41136 states. [2020-10-13 13:58:18,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41136 to 27133. [2020-10-13 13:58:18,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27133 states. [2020-10-13 13:58:18,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27133 states to 27133 states and 37605 transitions. [2020-10-13 13:58:18,559 INFO L78 Accepts]: Start accepts. Automaton has 27133 states and 37605 transitions. Word has length 171 [2020-10-13 13:58:18,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:18,559 INFO L479 AbstractCegarLoop]: Abstraction has 27133 states and 37605 transitions. [2020-10-13 13:58:18,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:58:18,559 INFO L276 IsEmpty]: Start isEmpty. Operand 27133 states and 37605 transitions. [2020-10-13 13:58:18,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-13 13:58:18,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:18,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:58:18,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 13:58:18,569 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:18,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:18,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1339629144, now seen corresponding path program 1 times [2020-10-13 13:58:18,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:18,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928420950] [2020-10-13 13:58:18,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:18,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:18,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:18,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:18,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:18,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:18,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:19,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:19,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:19,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:20,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:20,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:21,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:23,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:23,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 13:58:23,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:58:23,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:58:23,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:23,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:58:23,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:58:23,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 13:58:23,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:23,886 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:58:23,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:23,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:23,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:23,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:23,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:23,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:58:23,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:23,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:23,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:23,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:23,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:58:23,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928420950] [2020-10-13 13:58:23,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:23,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:58:23,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680954234] [2020-10-13 13:58:23,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:58:23,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:23,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:58:23,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:58:23,942 INFO L87 Difference]: Start difference. First operand 27133 states and 37605 transitions. Second operand 5 states. [2020-10-13 13:58:29,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:29,406 INFO L93 Difference]: Finished difference Result 36787 states and 50998 transitions. [2020-10-13 13:58:29,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:58:29,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-13 13:58:29,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:29,437 INFO L225 Difference]: With dead ends: 36787 [2020-10-13 13:58:29,437 INFO L226 Difference]: Without dead ends: 27167 [2020-10-13 13:58:29,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:58:29,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27167 states. [2020-10-13 13:58:31,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27167 to 26938. [2020-10-13 13:58:31,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26938 states. [2020-10-13 13:58:31,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26938 states to 26938 states and 37387 transitions. [2020-10-13 13:58:31,696 INFO L78 Accepts]: Start accepts. Automaton has 26938 states and 37387 transitions. Word has length 171 [2020-10-13 13:58:31,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:31,696 INFO L479 AbstractCegarLoop]: Abstraction has 26938 states and 37387 transitions. [2020-10-13 13:58:31,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:58:31,696 INFO L276 IsEmpty]: Start isEmpty. Operand 26938 states and 37387 transitions. [2020-10-13 13:58:31,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 13:58:31,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:31,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:58:31,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 13:58:31,710 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:31,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:31,710 INFO L82 PathProgramCache]: Analyzing trace with hash 2112748572, now seen corresponding path program 1 times [2020-10-13 13:58:31,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:31,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029883629] [2020-10-13 13:58:31,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:31,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:31,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:31,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:31,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:31,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:32,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:32,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:32,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:32,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:33,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:34,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:35,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:35,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:36,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:36,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 13:58:36,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 13:58:36,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:58:36,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:36,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:58:36,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:58:36,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 13:58:36,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:37,019 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:58:37,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:37,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:37,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:37,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:37,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:37,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:58:37,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:37,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:37,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:58:37,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029883629] [2020-10-13 13:58:37,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:37,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:58:37,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868071781] [2020-10-13 13:58:37,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:58:37,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:37,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:58:37,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:58:37,066 INFO L87 Difference]: Start difference. First operand 26938 states and 37387 transitions. Second operand 5 states. [2020-10-13 13:58:41,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:41,180 INFO L93 Difference]: Finished difference Result 43353 states and 60277 transitions. [2020-10-13 13:58:41,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:58:41,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-13 13:58:41,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:41,208 INFO L225 Difference]: With dead ends: 43353 [2020-10-13 13:58:41,208 INFO L226 Difference]: Without dead ends: 23679 [2020-10-13 13:58:41,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:58:41,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23679 states. [2020-10-13 13:58:43,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23679 to 23510. [2020-10-13 13:58:43,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23510 states. [2020-10-13 13:58:43,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23510 states to 23510 states and 32585 transitions. [2020-10-13 13:58:43,272 INFO L78 Accepts]: Start accepts. Automaton has 23510 states and 32585 transitions. Word has length 173 [2020-10-13 13:58:43,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:43,273 INFO L479 AbstractCegarLoop]: Abstraction has 23510 states and 32585 transitions. [2020-10-13 13:58:43,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:58:43,273 INFO L276 IsEmpty]: Start isEmpty. Operand 23510 states and 32585 transitions. [2020-10-13 13:58:43,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-13 13:58:43,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:43,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:58:43,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 13:58:43,284 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:43,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:43,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1471550060, now seen corresponding path program 1 times [2020-10-13 13:58:43,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:43,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843020933] [2020-10-13 13:58:43,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:43,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:43,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:43,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:44,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:44,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:45,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking...