/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 SingleStatement --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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i10_o10-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:24:21,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:24:21,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:24:21,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:24:21,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:24:21,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:24:21,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:24:21,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:24:21,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:24:21,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:24:21,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:24:21,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:24:21,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:24:21,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:24:21,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:24:21,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:24:21,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:24:21,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:24:21,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:24:21,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:24:21,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:24:21,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:24:21,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:24:21,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:24:21,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:24:21,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:24:21,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:24:21,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:24:21,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:24:21,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:24:21,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:24:21,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:24:21,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:24:21,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:24:21,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:24:21,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:24:21,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:24:21,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:24:21,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:24:21,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:24:21,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:24:21,589 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 [2020-09-25 13:24:21,616 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:24:21,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:24:21,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:24:21,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:24:21,618 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:24:21,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:24:21,618 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:24:21,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:24:21,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:24:21,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:24:21,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:24:21,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:24:21,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:24:21,620 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:24:21,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:24:21,620 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:24:21,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:24:21,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:24:21,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:24:21,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:24:21,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:24:21,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:24:21,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:24:21,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:24:21,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:24:21,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:24:21,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:24:21,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:24:21,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:24:21,623 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 -> SingleStatement 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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=true; [2020-09-25 13:24:22,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:24:22,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:24:22,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:24:22,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:24:22,095 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:24:22,096 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i10_o10-1.c [2020-09-25 13:24:22,189 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a93f02874/ef1cee09af0948d5ac09388367a4032c/FLAG3b142d3e1 [2020-09-25 13:24:22,724 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:24:22,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i10_o10-1.c [2020-09-25 13:24:22,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a93f02874/ef1cee09af0948d5ac09388367a4032c/FLAG3b142d3e1 [2020-09-25 13:24:23,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a93f02874/ef1cee09af0948d5ac09388367a4032c [2020-09-25 13:24:23,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:24:23,091 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:24:23,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:24:23,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:24:23,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:24:23,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:24:23" (1/1) ... [2020-09-25 13:24:23,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d8d2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:23, skipping insertion in model container [2020-09-25 13:24:23,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:24:23" (1/1) ... [2020-09-25 13:24:23,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:24:23,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:24:23,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:24:23,363 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:24:23,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:24:23,397 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:24:23,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:23 WrapperNode [2020-09-25 13:24:23,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:24:23,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:24:23,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:24:23,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:24:23,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:23" (1/1) ... [2020-09-25 13:24:23,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:23" (1/1) ... [2020-09-25 13:24:23,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:23" (1/1) ... [2020-09-25 13:24:23,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:23" (1/1) ... [2020-09-25 13:24:23,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:23" (1/1) ... [2020-09-25 13:24:23,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:23" (1/1) ... [2020-09-25 13:24:23,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:23" (1/1) ... [2020-09-25 13:24:23,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:24:23,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:24:23,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:24:23,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:24:23,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:23" (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 [2020-09-25 13:24:23,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:24:23,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:24:23,586 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 13:24:23,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:24:23,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:24:23,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:24:23,588 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 13:24:23,588 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:24:23,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:24:23,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:24:23,798 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:24:23,798 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:24:23,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:24:23 BoogieIcfgContainer [2020-09-25 13:24:23,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:24:23,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:24:23,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:24:23,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:24:23,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:24:23" (1/3) ... [2020-09-25 13:24:23,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2be5ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:24:23, skipping insertion in model container [2020-09-25 13:24:23,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:23" (2/3) ... [2020-09-25 13:24:23,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2be5ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:24:23, skipping insertion in model container [2020-09-25 13:24:23,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:24:23" (3/3) ... [2020-09-25 13:24:23,832 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i10_o10-1.c [2020-09-25 13:24:23,862 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:24:23,878 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:24:23,915 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:24:23,948 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:24:23,948 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:24:23,948 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:24:23,948 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:24:23,949 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:24:23,949 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:24:23,949 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:24:23,949 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:24:23,973 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-25 13:24:23,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 13:24:23,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:23,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:23,983 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:23,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:23,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-25 13:24:23,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:24,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136726821] [2020-09-25 13:24:24,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:24,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:24,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:24,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:24,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:24:24,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:24:24,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 13:24:24,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:24,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:24,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:24:24,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:24:24,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:24:24,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:24:24,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:24,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:24,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:24,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:24,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:24,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:24:24,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:24,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:24,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:24,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:24,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:24,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:24,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:24:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:24,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:24,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:24,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:24,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:24,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:24:24,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:24,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:24,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:24:24,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:24,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:24:24,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:24,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:24:24,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136726821] [2020-09-25 13:24:24,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:24:24,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:24:24,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941795029] [2020-09-25 13:24:24,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:24:24,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:24,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:24:24,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:24:24,520 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-25 13:24:24,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:24,613 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 13:24:24,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:24:24,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 13:24:24,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:24,631 INFO L225 Difference]: With dead ends: 37 [2020-09-25 13:24:24,631 INFO L226 Difference]: Without dead ends: 23 [2020-09-25 13:24:24,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:24:24,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-25 13:24:24,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-25 13:24:24,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 13:24:24,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-25 13:24:24,693 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-25 13:24:24,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:24,694 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-25 13:24:24,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:24:24,694 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-25 13:24:24,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 13:24:24,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:24,697 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:24,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:24:24,698 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:24,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:24,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-25 13:24:24,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:24,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100422073] [2020-09-25 13:24:24,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:24,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:24,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:25,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:25,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 13:24:25,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:24:25,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-09-25 13:24:25,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:25,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:25,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:24:25,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:24:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:24:25,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:25,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:25,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:25,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:25,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:25,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:25,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:24:25,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:25,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:25,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:25,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:25,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:25,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:25,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:24:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:25,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:25,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:24:25,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:25,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 13:24:25,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:25,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:25,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:25,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:25,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:24:25,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:25,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:25,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:25,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:25,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:25,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:25,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:24:25,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:25,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:25,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:24:25,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:25,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:24:25,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:25,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:24:25,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100422073] [2020-09-25 13:24:25,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:24:25,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:24:25,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700283557] [2020-09-25 13:24:25,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:24:25,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:25,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:24:25,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:24:25,411 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-25 13:24:25,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:25,489 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-25 13:24:25,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:24:25,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 13:24:25,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:25,492 INFO L225 Difference]: With dead ends: 34 [2020-09-25 13:24:25,492 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 13:24:25,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:24:25,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 13:24:25,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 13:24:25,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 13:24:25,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-25 13:24:25,516 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-25 13:24:25,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:25,516 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-25 13:24:25,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:24:25,517 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-25 13:24:25,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 13:24:25,519 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:25,519 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:25,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:24:25,520 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:25,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:25,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-25 13:24:25,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:25,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550875756] [2020-09-25 13:24:25,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:25,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:25,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:26,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:26,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 13:24:26,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:24:26,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-09-25 13:24:26,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:26,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:26,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:24:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 13:24:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:24:26,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:26,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:26,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:26,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:26,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:26,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:26,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:24:26,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:26,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:26,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:26,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:26,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:26,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:26,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:24:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:26,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:26,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:26,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 13:24:26,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:26,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 13:24:26,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:26,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:26,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:24:26,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:26,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 13:24:26,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:26,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:26,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:26,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:26,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:24:26,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:26,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 13:24:26,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:26,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:26,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:26,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:26,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:24:26,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:26,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:26,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:26,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:26,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:26,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:26,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:24:26,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:26,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:26,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:24:26,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:26,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:24:26,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 13:24:26,437 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:24:26,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550875756] [2020-09-25 13:24:26,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:24:26,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:24:26,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130625925] [2020-09-25 13:24:26,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:24:26,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:26,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:24:26,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:24:26,443 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2020-09-25 13:24:26,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:26,548 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 13:24:26,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:24:26,549 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-25 13:24:26,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:26,550 INFO L225 Difference]: With dead ends: 39 [2020-09-25 13:24:26,551 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 13:24:26,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:24:26,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 13:24:26,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 13:24:26,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 13:24:26,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-25 13:24:26,560 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-25 13:24:26,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:26,560 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-25 13:24:26,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:24:26,560 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-25 13:24:26,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 13:24:26,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:26,562 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:26,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:24:26,563 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:26,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:26,563 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-25 13:24:26,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:26,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74329015] [2020-09-25 13:24:26,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:26,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:26,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:27,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:27,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:24:27,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:24:27,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 886 [2020-09-25 13:24:27,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:27,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:27,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:24:27,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 13:24:27,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 13:24:27,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:27,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:27,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:27,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:27,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:27,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:27,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:24:27,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:27,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:27,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:27,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:27,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:24:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:27,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:27,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:27,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 13:24:27,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:27,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 13:24:27,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:27,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:27,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:24:27,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:27,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 13:24:27,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:27,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:27,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:27,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:27,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 13:24:27,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:27,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 13:24:27,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:27,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:27,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:24:27,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:27,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 13:24:27,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:27,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:27,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:27,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:27,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:24:27,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:27,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 13:24:27,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:27,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:27,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:27,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:27,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:24:27,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:27,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:27,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:27,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:27,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:27,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:27,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:24:27,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:27,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:27,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:24:27,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:27,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:24:27,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:27,884 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 13:24:27,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74329015] [2020-09-25 13:24:27,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:24:27,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:24:27,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136616640] [2020-09-25 13:24:27,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:24:27,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:27,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:24:27,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:24:27,892 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-09-25 13:24:27,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:27,998 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-25 13:24:27,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:24:27,998 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-09-25 13:24:27,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:28,000 INFO L225 Difference]: With dead ends: 44 [2020-09-25 13:24:28,000 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 13:24:28,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:24:28,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 13:24:28,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 13:24:28,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 13:24:28,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 13:24:28,016 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-25 13:24:28,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:28,019 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 13:24:28,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:24:28,020 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 13:24:28,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 13:24:28,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:28,022 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:28,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:24:28,024 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:28,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:28,024 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-25 13:24:28,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:28,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078816520] [2020-09-25 13:24:28,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:28,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:28,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:29,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:29,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:24:29,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:24:29,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1478 [2020-09-25 13:24:29,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:29,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:29,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:24:29,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 13:24:29,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 13:24:29,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:29,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:29,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:29,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:29,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:29,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:29,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:24:29,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:29,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:29,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:29,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:24:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:29,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:29,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:29,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 13:24:29,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:29,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 13:24:29,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:29,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:24:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:29,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 13:24:29,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:24:29,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:29,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:29,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:29,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 13:24:29,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:29,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 13:24:29,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:29,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:24:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 13:24:29,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:29,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:29,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:30,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:30,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 13:24:30,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:30,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 13:24:30,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:30,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:30,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:24:30,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:30,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 13:24:30,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:30,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:30,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:30,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:30,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:24:30,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:30,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 13:24:30,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:30,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:30,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:30,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:30,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:24:30,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:30,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:30,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:30,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:30,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:30,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:30,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:24:30,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:30,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:30,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:24:30,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:30,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:24:30,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:30,169 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 13:24:30,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078816520] [2020-09-25 13:24:30,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:24:30,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 13:24:30,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833562912] [2020-09-25 13:24:30,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:24:30,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:30,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:24:30,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:24:30,172 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 13 states. [2020-09-25 13:24:30,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:30,317 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-25 13:24:30,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 13:24:30,317 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-09-25 13:24:30,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:30,319 INFO L225 Difference]: With dead ends: 49 [2020-09-25 13:24:30,319 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 13:24:30,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:24:30,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 13:24:30,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 13:24:30,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 13:24:30,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-25 13:24:30,328 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-25 13:24:30,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:30,329 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-25 13:24:30,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:24:30,329 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-25 13:24:30,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 13:24:30,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:30,331 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:30,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:24:30,332 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:30,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:30,332 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-25 13:24:30,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:30,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112800421] [2020-09-25 13:24:30,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:30,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:30,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:32,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:32,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:24:32,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:24:32,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2035 [2020-09-25 13:24:32,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:32,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:32,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 13:24:32,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 13:24:32,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 13:24:32,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:32,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:32,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:32,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:32,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:32,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:32,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:24:32,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:32,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:32,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:32,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:32,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:32,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:32,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:24:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:32,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:32,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:32,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 13:24:32,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:32,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 13:24:32,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:32,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:32,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:24:32,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:32,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 13:24:32,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:32,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:32,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:32,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:32,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 13:24:32,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:32,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 13:24:32,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:32,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:32,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:24:32,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:32,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 13:24:32,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:32,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:32,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:32,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:32,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 13:24:32,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:32,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 13:24:32,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:32,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:24:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:32,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 13:24:32,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:33,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:33,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:33,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:33,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 13:24:33,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:33,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 13:24:33,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:33,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:24:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 13:24:33,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:33,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:33,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:33,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:33,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:24:33,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:33,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:24:33,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:33,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:33,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:33,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:33,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:24:33,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:33,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:33,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:33,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:33,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:33,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:33,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:24:33,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:33,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:24:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:24:33,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:33,214 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 13:24:33,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112800421] [2020-09-25 13:24:33,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:24:33,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 13:24:33,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938750140] [2020-09-25 13:24:33,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 13:24:33,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:33,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 13:24:33,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:24:33,217 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 15 states. [2020-09-25 13:24:33,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:33,379 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-25 13:24:33,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 13:24:33,379 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 13:24:33,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:33,381 INFO L225 Difference]: With dead ends: 54 [2020-09-25 13:24:33,381 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 13:24:33,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2020-09-25 13:24:33,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 13:24:33,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 13:24:33,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 13:24:33,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-25 13:24:33,390 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-25 13:24:33,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:33,390 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-25 13:24:33,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 13:24:33,390 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-25 13:24:33,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 13:24:33,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:33,392 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:33,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:24:33,393 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:33,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:33,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-25 13:24:33,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:33,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581541231] [2020-09-25 13:24:33,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:33,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:33,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:36,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:36,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:24:36,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:24:36,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2777 [2020-09-25 13:24:36,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:36,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:36,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 13:24:36,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 13:24:36,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 13:24:36,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:36,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:36,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:36,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:36,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:36,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:36,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:24:36,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:36,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:36,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:36,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:36,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:36,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:36,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:24:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:36,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:36,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:36,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 13:24:36,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:36,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-25 13:24:36,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:36,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:36,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:24:36,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:36,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 13:24:36,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:36,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:36,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:36,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:36,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 13:24:36,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:36,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-25 13:24:36,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:36,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:36,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:24:36,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:36,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 13:24:36,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:36,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:36,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:36,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:36,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 13:24:36,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:36,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 13:24:36,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:37,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:37,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:24:37,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:37,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 13:24:37,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:37,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:37,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:37,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:37,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 13:24:37,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:37,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 13:24:37,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:37,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:37,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:24:37,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:37,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 13:24:37,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:37,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:37,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:37,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:37,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 13:24:37,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:37,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 13:24:37,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:37,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:37,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:24:37,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:37,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 13:24:37,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:37,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:37,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:37,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:37,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:24:37,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:37,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:24:37,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:37,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:24:37,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:37,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:37,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:37,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:37,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:37,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:37,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:24:37,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:37,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:24:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:24:37,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 13:24:37,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581541231] [2020-09-25 13:24:37,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:24:37,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 13:24:37,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933635393] [2020-09-25 13:24:37,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 13:24:37,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:37,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 13:24:37,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:24:37,411 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 17 states. [2020-09-25 13:24:37,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:37,554 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 13:24:37,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 13:24:37,555 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 64 [2020-09-25 13:24:37,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:37,556 INFO L225 Difference]: With dead ends: 59 [2020-09-25 13:24:37,556 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 13:24:37,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-09-25 13:24:37,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 13:24:37,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 13:24:37,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 13:24:37,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-25 13:24:37,564 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-25 13:24:37,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:37,564 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-25 13:24:37,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 13:24:37,565 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-25 13:24:37,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 13:24:37,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:37,566 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:37,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:24:37,566 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:37,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:37,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-25 13:24:37,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:37,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489788719] [2020-09-25 13:24:37,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:37,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:37,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:41,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:41,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 13:24:41,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:24:41,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3533 [2020-09-25 13:24:41,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:41,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:41,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 13:24:41,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:24:41,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 13:24:41,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:41,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:41,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:41,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:41,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:41,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:41,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:24:41,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:41,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:41,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:41,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:24:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:41,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:41,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:41,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 13:24:41,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:41,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-09-25 13:24:41,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:41,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:41,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 13:24:41,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:24:41,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 13:24:41,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:41,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:41,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:41,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:41,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 13:24:41,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:41,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-25 13:24:41,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:41,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:41,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 13:24:41,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:41,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 13:24:41,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:41,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:41,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:42,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:42,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 13:24:42,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:42,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 13:24:42,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:42,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:42,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:24:42,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:42,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 13:24:42,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:42,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:42,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:42,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:42,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 13:24:42,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:42,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 13:24:42,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:42,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:42,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:24:42,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:42,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 13:24:42,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:42,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:42,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:42,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:42,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 13:24:42,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:42,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 13:24:42,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:42,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:42,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:24:42,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:42,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 13:24:42,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:42,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:42,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:42,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:42,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 13:24:42,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:42,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 13:24:42,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:42,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:42,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:24:42,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:42,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:24:42,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:42,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:42,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:42,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:42,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:24:42,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:42,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 13:24:42,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:42,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:42,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:24:42,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:42,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:24:42,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:42,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:42,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:42,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:42,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:42,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:42,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:24:42,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:42,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:42,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:42,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:42,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:24:42,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:42,650 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 7 proven. 131 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-09-25 13:24:42,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489788719] [2020-09-25 13:24:42,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:24:42,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 13:24:42,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109389893] [2020-09-25 13:24:42,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 13:24:42,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:42,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 13:24:42,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:24:42,653 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 14 states. [2020-09-25 13:24:42,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:42,859 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-25 13:24:42,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:24:42,861 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 72 [2020-09-25 13:24:42,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:42,862 INFO L225 Difference]: With dead ends: 64 [2020-09-25 13:24:42,866 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 13:24:42,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=300, Unknown=0, NotChecked=0, Total=462 [2020-09-25 13:24:42,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 13:24:42,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 13:24:42,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 13:24:42,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 13:24:42,880 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-25 13:24:42,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:42,880 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 13:24:42,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 13:24:42,881 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 13:24:42,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 13:24:42,884 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:42,884 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:42,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:24:42,885 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:42,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:42,886 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-25 13:24:42,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:42,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162961242] [2020-09-25 13:24:42,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:42,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:43,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:47,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:47,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 13:24:47,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:24:47,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4563 [2020-09-25 13:24:47,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:47,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:47,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 13:24:47,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 13:24:47,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 13:24:47,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:47,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:47,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:47,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:47,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:47,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:47,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:24:47,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:47,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:47,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:47,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:47,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 13:24:47,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:24:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:47,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:47,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:47,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 13:24:47,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:47,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-09-25 13:24:47,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:47,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:47,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:24:47,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:47,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 13:24:47,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:47,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:47,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:48,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:48,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 13:24:48,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:48,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-25 13:24:48,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:48,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:48,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 13:24:48,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:48,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 13:24:48,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:48,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:48,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:48,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:48,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 13:24:48,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:48,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 13:24:48,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:48,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:48,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:24:48,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:48,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 13:24:48,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:48,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:48,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:48,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:48,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 13:24:48,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:48,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 13:24:48,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:48,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:24:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 13:24:48,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:48,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:48,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:48,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:48,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 13:24:48,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:48,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 13:24:48,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:48,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:48,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:24:48,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:48,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 13:24:48,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:48,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:48,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:48,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:48,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 13:24:48,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:48,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 13:24:48,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:48,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:48,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:24:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 13:24:48,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:48,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:49,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:49,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:49,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 13:24:49,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:49,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 13:24:49,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:49,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:49,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:24:49,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:49,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 13:24:49,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:49,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:49,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:49,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:49,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:24:49,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:49,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:24:49,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:49,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:49,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:49,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:49,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:24:49,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:49,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:49,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:49,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:49,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:49,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:49,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:24:49,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:49,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:49,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:24:49,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:49,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:24:49,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 13:24:49,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162961242] [2020-09-25 13:24:49,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:24:49,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 13:24:49,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024421833] [2020-09-25 13:24:49,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 13:24:49,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:49,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 13:24:49,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:24:49,251 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 21 states. [2020-09-25 13:24:49,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:49,447 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-25 13:24:49,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 13:24:49,448 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 80 [2020-09-25 13:24:49,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:49,449 INFO L225 Difference]: With dead ends: 69 [2020-09-25 13:24:49,450 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 13:24:49,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2020-09-25 13:24:49,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 13:24:49,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 13:24:49,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 13:24:49,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-25 13:24:49,468 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-25 13:24:49,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:49,469 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-25 13:24:49,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 13:24:49,469 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-25 13:24:49,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 13:24:49,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:49,471 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:49,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:24:49,471 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:49,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:49,472 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-25 13:24:49,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:49,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400359953] [2020-09-25 13:24:49,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:49,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:49,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:54,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:54,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 13:24:54,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:24:54,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:24:54,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:54,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:54,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 13:24:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:24:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 13:24:54,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:54,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:54,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:54,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:54,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:54,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:54,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:24:54,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:54,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:54,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:54,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:54,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:54,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:54,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:24:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:54,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:55,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:55,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 13:24:55,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:55,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-09-25 13:24:55,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:55,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:55,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 13:24:55,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:24:55,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 13:24:55,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:55,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:55,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:55,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:55,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 13:24:55,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:55,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-09-25 13:24:55,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:55,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 13:24:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 13:24:55,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:55,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:55,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:55,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:55,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 13:24:55,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:55,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-09-25 13:24:55,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:55,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:55,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:24:55,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:55,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:24:55,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:55,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:55,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:56,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:56,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 13:24:56,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:56,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 13:24:56,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:56,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:56,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 13:24:56,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:56,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 13:24:56,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:56,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:56,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:56,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:56,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 13:24:56,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:56,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 13:24:56,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:56,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:56,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:24:56,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:56,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 13:24:56,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:56,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:56,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:56,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:56,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 13:24:56,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:56,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 13:24:56,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:56,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:56,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:24:56,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:56,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 13:24:56,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:56,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:56,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:56,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:56,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 13:24:56,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:56,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 13:24:56,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:56,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:24:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 13:24:56,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:56,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:56,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:56,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:56,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 13:24:56,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:56,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 13:24:56,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:56,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:24:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:24:56,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:56,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:56,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:56,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:56,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:24:56,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:56,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:24:56,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:56,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:56,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:24:56,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:56,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:24:56,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:56,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:56,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:56,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:56,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:56,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:56,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:24:56,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:56,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:56,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:56,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:56,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:24:56,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:56,836 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 16 proven. 226 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-09-25 13:24:56,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400359953] [2020-09-25 13:24:56,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:24:56,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 13:24:56,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253663796] [2020-09-25 13:24:56,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 13:24:56,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:56,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 13:24:56,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:24:56,838 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 15 states. [2020-09-25 13:24:57,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:57,022 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-25 13:24:57,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:24:57,022 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 88 [2020-09-25 13:24:57,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:57,024 INFO L225 Difference]: With dead ends: 74 [2020-09-25 13:24:57,024 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 13:24:57,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-09-25 13:24:57,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 13:24:57,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-25 13:24:57,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 13:24:57,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-25 13:24:57,039 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-25 13:24:57,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:57,040 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-25 13:24:57,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 13:24:57,040 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-25 13:24:57,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 13:24:57,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:57,041 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:57,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 13:24:57,049 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:57,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:57,050 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-25 13:24:57,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:57,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762390791] [2020-09-25 13:24:57,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 13:24:57,066 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 13:24:57,066 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 13:24:57,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 13:24:57,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:24:57 BoogieIcfgContainer [2020-09-25 13:24:57,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:24:57,100 INFO L168 Benchmark]: Toolchain (without parser) took 34012.03 ms. Allocated memory was 139.5 MB in the beginning and 420.5 MB in the end (delta: 281.0 MB). Free memory was 102.7 MB in the beginning and 216.5 MB in the end (delta: -113.8 MB). Peak memory consumption was 167.2 MB. Max. memory is 7.1 GB. [2020-09-25 13:24:57,101 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 13:24:57,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.11 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 92.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-09-25 13:24:57,102 INFO L168 Benchmark]: Boogie Preprocessor took 29.67 ms. Allocated memory is still 139.5 MB. Free memory was 92.9 MB in the beginning and 91.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-25 13:24:57,103 INFO L168 Benchmark]: RCFGBuilder took 376.06 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.6 MB in the beginning and 169.9 MB in the end (delta: -78.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-25 13:24:57,104 INFO L168 Benchmark]: TraceAbstraction took 33277.06 ms. Allocated memory was 202.4 MB in the beginning and 420.5 MB in the end (delta: 218.1 MB). Free memory was 169.9 MB in the beginning and 216.5 MB in the end (delta: -46.6 MB). Peak memory consumption was 171.5 MB. Max. memory is 7.1 GB. [2020-09-25 13:24:57,108 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 304.11 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 92.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.67 ms. Allocated memory is still 139.5 MB. Free memory was 92.9 MB in the beginning and 91.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 376.06 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.6 MB in the beginning and 169.9 MB in the end (delta: -78.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33277.06 ms. Allocated memory was 202.4 MB in the beginning and 420.5 MB in the end (delta: 218.1 MB). Free memory was 169.9 MB in the beginning and 216.5 MB in the end (delta: -46.6 MB). Peak memory consumption was 171.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int input = 10; [L11] CALL, EXPR id(input) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND TRUE x==0 [L5] return 0; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L11] RET, EXPR id(input) [L11] int result = id(input); [L12] COND TRUE result == 10 [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.1s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 185 SDtfs, 264 SDslu, 1034 SDs, 0 SdLazy, 405 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 309 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 31.0s InterpolantComputationTime, 616 NumberOfCodeBlocks, 616 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 510 ConstructedInterpolants, 0 QuantifiedInterpolants, 75131 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 410/1140 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...