/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:48:32,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:48:32,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:48:32,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:48:32,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:48:32,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:48:32,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:48:32,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:48:32,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:48:32,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:48:32,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:48:32,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:48:32,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:48:32,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:48:32,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:48:32,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:48:32,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:48:32,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:48:32,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:48:32,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:48:32,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:48:32,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:48:32,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:48:32,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:48:32,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:48:32,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:48:32,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:48:32,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:48:32,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:48:32,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:48:32,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:48:32,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:48:32,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:48:32,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:48:32,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:48:32,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:48:32,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:48:32,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:48:32,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:48:32,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:48:32,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:48:32,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:48:32,579 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:48:32,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:48:32,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:48:32,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:48:32,581 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:48:32,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:48:32,581 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:48:32,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:48:32,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:48:32,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:48:32,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:48:32,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:48:32,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:48:32,583 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:48:32,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:48:32,583 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:48:32,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:48:32,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:48:32,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:48:32,584 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:48:32,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:48:32,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:48:32,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:48:32,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:48:32,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:48:32,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:48:32,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:48:32,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:48:32,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:48:32,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:48:32,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:48:32,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:48:32,910 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:48:32,912 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:48:32,912 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:48:32,913 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2020-10-14 23:48:32,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/360df067a/3a251fc96724422dbc863684fb674e5b/FLAGb0bebf640 [2020-10-14 23:48:33,432 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:48:33,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2020-10-14 23:48:33,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/360df067a/3a251fc96724422dbc863684fb674e5b/FLAGb0bebf640 [2020-10-14 23:48:33,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/360df067a/3a251fc96724422dbc863684fb674e5b [2020-10-14 23:48:33,816 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:48:33,818 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:48:33,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:48:33,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:48:33,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:48:33,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:48:33" (1/1) ... [2020-10-14 23:48:33,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a48022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:33, skipping insertion in model container [2020-10-14 23:48:33,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:48:33" (1/1) ... [2020-10-14 23:48:33,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:48:33,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:48:34,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:48:34,050 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:48:34,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:48:34,105 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:48:34,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:34 WrapperNode [2020-10-14 23:48:34,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:48:34,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:48:34,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:48:34,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:48:34,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:34" (1/1) ... [2020-10-14 23:48:34,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:34" (1/1) ... [2020-10-14 23:48:34,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:34" (1/1) ... [2020-10-14 23:48:34,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:34" (1/1) ... [2020-10-14 23:48:34,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:34" (1/1) ... [2020-10-14 23:48:34,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:34" (1/1) ... [2020-10-14 23:48:34,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:34" (1/1) ... [2020-10-14 23:48:34,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:48:34,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:48:34,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:48:34,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:48:34,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:48:34,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:48:34,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:48:34,305 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 23:48:34,305 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:48:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:48:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:48:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 23:48:34,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 23:48:34,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-14 23:48:34,306 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:48:34,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:48:34,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:48:34,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:48:34,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:48:34,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:48:34,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:48:34,636 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:48:34,637 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 23:48:34,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:48:34 BoogieIcfgContainer [2020-10-14 23:48:34,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:48:34,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:48:34,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:48:34,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:48:34,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:48:33" (1/3) ... [2020-10-14 23:48:34,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b987e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:48:34, skipping insertion in model container [2020-10-14 23:48:34,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:34" (2/3) ... [2020-10-14 23:48:34,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b987e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:48:34, skipping insertion in model container [2020-10-14 23:48:34,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:48:34" (3/3) ... [2020-10-14 23:48:34,650 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+lhb-reducer.c [2020-10-14 23:48:34,662 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:48:34,668 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-14 23:48:34,683 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-14 23:48:34,707 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:48:34,707 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:48:34,707 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:48:34,707 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:48:34,707 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:48:34,708 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:48:34,708 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:48:34,708 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:48:34,729 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-14 23:48:34,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 23:48:34,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:48:34,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:48:34,737 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:48:34,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:48:34,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1405311942, now seen corresponding path program 1 times [2020-10-14 23:48:34,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:48:34,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099550030] [2020-10-14 23:48:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:48:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:34,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:35,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:35,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:48:35,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:48:35,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-14 23:48:35,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:35,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:35,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:48:35,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:48:35,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:48:35,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 23:48:35,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:48:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:35,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:35,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:35,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:48:35,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:48:35,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:48:35,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:35,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:35,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:48:35,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:48:35,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:48:35,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:48:35,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:48:35,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099550030] [2020-10-14 23:48:35,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:48:35,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:48:35,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187412295] [2020-10-14 23:48:35,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:48:35,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:48:35,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:48:35,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:48:35,281 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-10-14 23:48:35,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:48:35,430 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions. [2020-10-14 23:48:35,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:48:35,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-14 23:48:35,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:48:35,441 INFO L225 Difference]: With dead ends: 56 [2020-10-14 23:48:35,442 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 23:48:35,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:48:35,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 23:48:35,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-10-14 23:48:35,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 23:48:35,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-10-14 23:48:35,485 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 13 [2020-10-14 23:48:35,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:48:35,486 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-10-14 23:48:35,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:48:35,486 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-10-14 23:48:35,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 23:48:35,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:48:35,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:48:35,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:48:35,488 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:48:35,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:48:35,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1544595869, now seen corresponding path program 1 times [2020-10-14 23:48:35,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:48:35,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209813245] [2020-10-14 23:48:35,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:48:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:35,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:35,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:35,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:48:35,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:48:35,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 23:48:35,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:35,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:35,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:48:35,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:48:35,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 23:48:35,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:48:35,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:48:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:35,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:35,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:35,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:48:35,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:48:35,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:48:35,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:35,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:35,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:48:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:48:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:48:35,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:48:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:48:35,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209813245] [2020-10-14 23:48:35,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:48:35,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:48:35,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3974592] [2020-10-14 23:48:35,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:48:35,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:48:35,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:48:35,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:48:35,732 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 5 states. [2020-10-14 23:48:35,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:48:35,864 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-10-14 23:48:35,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:48:35,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-14 23:48:35,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:48:35,867 INFO L225 Difference]: With dead ends: 53 [2020-10-14 23:48:35,867 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 23:48:35,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:48:35,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 23:48:35,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 34. [2020-10-14 23:48:35,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 23:48:35,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-10-14 23:48:35,888 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 14 [2020-10-14 23:48:35,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:48:35,889 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-10-14 23:48:35,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:48:35,890 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-10-14 23:48:35,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 23:48:35,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:48:35,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:48:35,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:48:35,894 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:48:35,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:48:35,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1479919608, now seen corresponding path program 1 times [2020-10-14 23:48:35,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:48:35,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114716313] [2020-10-14 23:48:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:48:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:35,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:35,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:36,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:36,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:48:36,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:48:36,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 23:48:36,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:36,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:36,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:48:36,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:48:36,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 23:48:36,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:48:36,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:48:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:36,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:36,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:36,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:48:36,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:48:36,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:48:36,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:36,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:36,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:48:36,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:48:36,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:48:36,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:48:36,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:48:36,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114716313] [2020-10-14 23:48:36,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:48:36,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:48:36,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502873532] [2020-10-14 23:48:36,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:48:36,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:48:36,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:48:36,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:48:36,145 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 4 states. [2020-10-14 23:48:36,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:48:36,266 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-14 23:48:36,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:48:36,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-14 23:48:36,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:48:36,268 INFO L225 Difference]: With dead ends: 62 [2020-10-14 23:48:36,268 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 23:48:36,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:48:36,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 23:48:36,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2020-10-14 23:48:36,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 23:48:36,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-14 23:48:36,276 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 14 [2020-10-14 23:48:36,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:48:36,276 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-14 23:48:36,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:48:36,277 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-14 23:48:36,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 23:48:36,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:48:36,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:48:36,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:48:36,278 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:48:36,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:48:36,279 INFO L82 PathProgramCache]: Analyzing trace with hash -579682531, now seen corresponding path program 1 times [2020-10-14 23:48:36,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:48:36,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350510678] [2020-10-14 23:48:36,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:48:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:36,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:36,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:36,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:48:36,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:48:36,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:48:36,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:36,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:36,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:48:36,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:48:36,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 23:48:36,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:48:36,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:48:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:36,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:36,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:36,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:48:36,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:48:36,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:48:36,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:36,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:36,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:48:36,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:48:36,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:48:36,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:48:36,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:48:36,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350510678] [2020-10-14 23:48:36,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:48:36,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:48:36,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907769789] [2020-10-14 23:48:36,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:48:36,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:48:36,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:48:36,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:48:36,351 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 4 states. [2020-10-14 23:48:36,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:48:36,425 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-10-14 23:48:36,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:48:36,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-14 23:48:36,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:48:36,427 INFO L225 Difference]: With dead ends: 56 [2020-10-14 23:48:36,427 INFO L226 Difference]: Without dead ends: 35 [2020-10-14 23:48:36,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:48:36,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-14 23:48:36,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-10-14 23:48:36,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 23:48:36,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-14 23:48:36,434 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 15 [2020-10-14 23:48:36,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:48:36,434 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-14 23:48:36,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:48:36,434 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-14 23:48:36,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:48:36,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:48:36,435 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] [2020-10-14 23:48:36,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:48:36,436 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:48:36,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:48:36,436 INFO L82 PathProgramCache]: Analyzing trace with hash -694850142, now seen corresponding path program 1 times [2020-10-14 23:48:36,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:48:36,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000236724] [2020-10-14 23:48:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:48:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:36,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:36,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:36,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:48:36,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:48:36,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-14 23:48:36,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:36,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:48:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:48:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:48:36,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:48:37,318 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 49 [2020-10-14 23:48:37,871 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 72 [2020-10-14 23:48:37,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:48:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:37,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:37,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:37,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:48:37,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:48:37,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:48:37,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:37,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:37,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:48:37,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:48:37,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:48:37,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:48:37,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:48:37,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000236724] [2020-10-14 23:48:37,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:48:37,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 23:48:37,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185274694] [2020-10-14 23:48:37,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:48:37,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:48:37,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:48:37,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:48:37,922 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 7 states. [2020-10-14 23:48:38,131 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-14 23:48:38,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:48:38,188 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2020-10-14 23:48:38,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:48:38,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-14 23:48:38,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:48:38,189 INFO L225 Difference]: With dead ends: 34 [2020-10-14 23:48:38,189 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 23:48:38,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:48:38,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 23:48:38,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-14 23:48:38,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 23:48:38,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-14 23:48:38,197 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 20 [2020-10-14 23:48:38,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:48:38,197 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-14 23:48:38,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:48:38,198 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-14 23:48:38,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:48:38,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:48:38,199 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] [2020-10-14 23:48:38,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:48:38,199 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:48:38,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:48:38,199 INFO L82 PathProgramCache]: Analyzing trace with hash -700328240, now seen corresponding path program 1 times [2020-10-14 23:48:38,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:48:38,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304938430] [2020-10-14 23:48:38,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:48:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:38,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:38,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:38,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:38,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:48:38,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:48:38,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 23:48:38,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:38,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:38,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:48:38,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:48:38,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:48:38,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:48:38,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:48:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:38,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:38,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:38,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:48:38,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:48:38,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:48:38,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:38,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:38,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:48:38,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:48:38,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:48:38,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:48:38,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:48:38,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304938430] [2020-10-14 23:48:38,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:48:38,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:48:38,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120684808] [2020-10-14 23:48:38,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:48:38,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:48:38,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:48:38,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:48:38,526 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 6 states. [2020-10-14 23:48:38,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:48:38,674 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2020-10-14 23:48:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:48:38,674 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-14 23:48:38,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:48:38,675 INFO L225 Difference]: With dead ends: 68 [2020-10-14 23:48:38,675 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 23:48:38,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:48:38,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 23:48:38,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2020-10-14 23:48:38,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 23:48:38,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-14 23:48:38,689 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 21 [2020-10-14 23:48:38,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:48:38,689 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-14 23:48:38,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:48:38,689 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-14 23:48:38,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:48:38,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:48:38,692 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] [2020-10-14 23:48:38,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:48:38,692 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:48:38,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:48:38,693 INFO L82 PathProgramCache]: Analyzing trace with hash -716385589, now seen corresponding path program 1 times [2020-10-14 23:48:38,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:48:38,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700458540] [2020-10-14 23:48:38,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:48:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:38,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:38,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:38,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:48:38,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:48:38,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 23:48:38,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:38,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:38,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:48:38,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 23:48:38,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 23:48:38,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:48:38,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:48:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:38,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:38,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:38,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:48:38,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:48:38,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:48:38,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:38,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:38,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:48:38,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:48:38,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:48:38,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:48:38,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:48:38,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700458540] [2020-10-14 23:48:38,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:48:38,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:48:38,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706117602] [2020-10-14 23:48:38,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:48:38,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:48:38,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:48:38,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:48:38,847 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 5 states. [2020-10-14 23:48:38,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:48:38,955 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-10-14 23:48:38,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:48:38,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-14 23:48:38,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:48:38,959 INFO L225 Difference]: With dead ends: 55 [2020-10-14 23:48:38,959 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 23:48:38,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:48:38,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 23:48:38,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 37. [2020-10-14 23:48:38,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 23:48:38,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-14 23:48:38,971 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 21 [2020-10-14 23:48:38,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:48:38,972 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-14 23:48:38,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:48:38,972 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-14 23:48:38,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 23:48:38,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:48:38,973 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] [2020-10-14 23:48:38,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:48:38,974 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:48:38,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:48:38,975 INFO L82 PathProgramCache]: Analyzing trace with hash -723586517, now seen corresponding path program 1 times [2020-10-14 23:48:38,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:48:38,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672774850] [2020-10-14 23:48:38,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:48:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:38,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:39,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:39,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:39,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 23:48:39,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:48:39,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 23:48:39,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:39,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:48:39,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:48:39,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:48:39,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:48:39,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:48:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:39,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:39,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:39,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:48:39,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:48:39,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:48:39,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:39,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:48:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:48:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:48:39,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:48:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:48:39,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672774850] [2020-10-14 23:48:39,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:48:39,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:48:39,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263079627] [2020-10-14 23:48:39,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:48:39,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:48:39,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:48:39,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:48:39,161 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-14 23:48:41,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:48:41,344 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2020-10-14 23:48:41,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:48:41,346 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-14 23:48:41,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:48:41,347 INFO L225 Difference]: With dead ends: 60 [2020-10-14 23:48:41,347 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 23:48:41,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:48:41,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 23:48:41,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2020-10-14 23:48:41,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 23:48:41,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-10-14 23:48:41,357 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 22 [2020-10-14 23:48:41,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:48:41,357 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-10-14 23:48:41,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:48:41,358 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-10-14 23:48:41,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 23:48:41,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:48:41,359 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:48:41,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:48:41,363 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:48:41,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:48:41,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1464748711, now seen corresponding path program 1 times [2020-10-14 23:48:41,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:48:41,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817858412] [2020-10-14 23:48:41,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:48:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:41,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:41,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:41,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:41,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:48:41,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:48:41,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-14 23:48:41,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:41,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:41,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:48:41,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:48:41,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:48:41,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:48:41,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:48:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:41,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:41,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:41,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:48:41,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:48:41,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:48:41,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:41,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:48:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:48:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:48:41,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:48:41,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:48:41,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817858412] [2020-10-14 23:48:41,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:48:41,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 23:48:41,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183455682] [2020-10-14 23:48:41,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:48:41,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:48:41,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:48:41,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:48:41,891 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 5 states. [2020-10-14 23:48:46,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:48:46,153 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-10-14 23:48:46,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:48:46,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-14 23:48:46,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:48:46,154 INFO L225 Difference]: With dead ends: 41 [2020-10-14 23:48:46,154 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 23:48:46,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:48:46,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 23:48:46,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-14 23:48:46,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 23:48:46,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-10-14 23:48:46,161 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 23 [2020-10-14 23:48:46,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:48:46,161 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-10-14 23:48:46,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:48:46,161 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-10-14 23:48:46,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:48:46,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:48:46,162 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:48:46,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:48:46,163 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:48:46,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:48:46,163 INFO L82 PathProgramCache]: Analyzing trace with hash 820152981, now seen corresponding path program 1 times [2020-10-14 23:48:46,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:48:46,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446145441] [2020-10-14 23:48:46,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:48:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:46,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:46,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:46,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:47,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:47,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:48:47,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:48:47,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1286 [2020-10-14 23:48:47,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:47,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:48:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:48:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:48:47,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:48:48,550 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 54 [2020-10-14 23:49:20,732 WARN L193 SmtUtils]: Spent 31.62 s on a formula simplification. DAG size of input: 174 DAG size of output: 136 [2020-10-14 23:49:57,490 WARN L193 SmtUtils]: Spent 35.96 s on a formula simplification. DAG size of input: 176 DAG size of output: 131 [2020-10-14 23:50:02,378 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 78 [2020-10-14 23:50:02,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:02,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:02,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:02,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:02,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:02,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:50:02,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:02,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:02,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:02,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:50:02,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446145441] [2020-10-14 23:50:02,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:50:02,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:50:02,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934917171] [2020-10-14 23:50:02,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:50:02,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:02,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:50:02,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=52, Unknown=2, NotChecked=0, Total=72 [2020-10-14 23:50:02,528 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2020-10-14 23:52:21,581 WARN L193 SmtUtils]: Spent 2.21 m on a formula simplification. DAG size of input: 197 DAG size of output: 153 [2020-10-14 23:52:43,029 WARN L193 SmtUtils]: Spent 20.40 s on a formula simplification. DAG size of input: 142 DAG size of output: 51