/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:30:36,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:30:36,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:30:36,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:30:36,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:30:36,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:30:36,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:30:36,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:30:36,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:30:36,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:30:36,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:30:36,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:30:36,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:30:36,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:30:36,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:30:36,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:30:36,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:30:36,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:30:36,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:30:36,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:30:36,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:30:36,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:30:36,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:30:36,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:30:36,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:30:36,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:30:36,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:30:36,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:30:36,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:30:36,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:30:36,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:30:36,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:30:36,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:30:36,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:30:36,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:30:36,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:30:36,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:30:36,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:30:36,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:30:36,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:30:36,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:30:36,395 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 [2020-09-24 18:30:36,439 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:30:36,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:30:36,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:30:36,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:30:36,442 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:30:36,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:30:36,443 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:30:36,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:30:36,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:30:36,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:30:36,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:30:36,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:30:36,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:30:36,445 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:30:36,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:30:36,446 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:30:36,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:30:36,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:30:36,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:30:36,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:30:36,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:30:36,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:30:36,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:30:36,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:30:36,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:30:36,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:30:36,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:30:36,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:30:36,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:30:36,449 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:30:36,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:30:36,959 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:30:36,965 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:30:36,968 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:30:36,969 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:30:36,970 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2020-09-24 18:30:37,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3fa69ae95/1244901f75b641f6b3f4721f607c7c98/FLAGb15e74ad3 [2020-09-24 18:30:37,595 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:30:37,596 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2020-09-24 18:30:37,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3fa69ae95/1244901f75b641f6b3f4721f607c7c98/FLAGb15e74ad3 [2020-09-24 18:30:37,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3fa69ae95/1244901f75b641f6b3f4721f607c7c98 [2020-09-24 18:30:37,950 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:30:37,957 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:30:37,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:30:37,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:30:37,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:30:37,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:30:37" (1/1) ... [2020-09-24 18:30:37,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240fc400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:37, skipping insertion in model container [2020-09-24 18:30:37,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:30:37" (1/1) ... [2020-09-24 18:30:37,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:30:38,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:30:38,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:30:38,228 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:30:38,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:30:38,265 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:30:38,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:38 WrapperNode [2020-09-24 18:30:38,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:30:38,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:30:38,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:30:38,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:30:38,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:38" (1/1) ... [2020-09-24 18:30:38,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:38" (1/1) ... [2020-09-24 18:30:38,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:38" (1/1) ... [2020-09-24 18:30:38,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:38" (1/1) ... [2020-09-24 18:30:38,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:38" (1/1) ... [2020-09-24 18:30:38,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:38" (1/1) ... [2020-09-24 18:30:38,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:38" (1/1) ... [2020-09-24 18:30:38,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:30:38,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:30:38,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:30:38,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:30:38,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:38" (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 [2020-09-24 18:30:38,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:30:38,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:30:38,459 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 18:30:38,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:30:38,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:30:38,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:30:38,459 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:30:38,459 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 18:30:38,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:30:38,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:30:38,460 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:30:38,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:30:38,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:30:38,792 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:30:38,793 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:30:38,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:30:38 BoogieIcfgContainer [2020-09-24 18:30:38,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:30:38,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:30:38,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:30:38,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:30:38,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:30:37" (1/3) ... [2020-09-24 18:30:38,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1735c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:30:38, skipping insertion in model container [2020-09-24 18:30:38,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:38" (2/3) ... [2020-09-24 18:30:38,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1735c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:30:38, skipping insertion in model container [2020-09-24 18:30:38,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:30:38" (3/3) ... [2020-09-24 18:30:38,809 INFO L109 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2020-09-24 18:30:38,822 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:30:38,833 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:30:38,856 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:30:38,888 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:30:38,888 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:30:38,889 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:30:38,889 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:30:38,889 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:30:38,889 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:30:38,889 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:30:38,889 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:30:38,913 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-09-24 18:30:38,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 18:30:38,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:38,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:38,923 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:38,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:38,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1122321079, now seen corresponding path program 1 times [2020-09-24 18:30:38,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:38,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669135371] [2020-09-24 18:30:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:39,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:39,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:30:39,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:39,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-24 18:30:39,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 18:30:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:39,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:30:39,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:39,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:39,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:39,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:39,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:30:39,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:39,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:39,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:39,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:39,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:39,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:30:39,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669135371] [2020-09-24 18:30:39,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:39,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 18:30:39,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73778535] [2020-09-24 18:30:39,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 18:30:39,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:39,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 18:30:39,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 18:30:39,352 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2020-09-24 18:30:39,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:39,388 INFO L93 Difference]: Finished difference Result 91 states and 122 transitions. [2020-09-24 18:30:39,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 18:30:39,390 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2020-09-24 18:30:39,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:39,402 INFO L225 Difference]: With dead ends: 91 [2020-09-24 18:30:39,402 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 18:30:39,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 18:30:39,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 18:30:39,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-24 18:30:39,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 18:30:39,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-09-24 18:30:39,462 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 24 [2020-09-24 18:30:39,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:39,463 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-09-24 18:30:39,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 18:30:39,463 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-09-24 18:30:39,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 18:30:39,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:39,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:39,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:30:39,465 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:39,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:39,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1949391841, now seen corresponding path program 1 times [2020-09-24 18:30:39,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:39,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194116297] [2020-09-24 18:30:39,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:39,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:39,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 18:30:39,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:39,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 18:30:39,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:30:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 18:30:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 18:30:39,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:39,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:39,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:39,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:39,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:39,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:30:39,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:39,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:39,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:30:39,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194116297] [2020-09-24 18:30:39,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:39,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:30:39,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984491469] [2020-09-24 18:30:39,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:30:39,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:39,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:30:39,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:30:39,743 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 5 states. [2020-09-24 18:30:39,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:39,855 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2020-09-24 18:30:39,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:30:39,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-09-24 18:30:39,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:39,858 INFO L225 Difference]: With dead ends: 66 [2020-09-24 18:30:39,858 INFO L226 Difference]: Without dead ends: 64 [2020-09-24 18:30:39,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:30:39,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-24 18:30:39,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-09-24 18:30:39,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 18:30:39,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-09-24 18:30:39,876 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 26 [2020-09-24 18:30:39,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:39,876 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-09-24 18:30:39,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:30:39,877 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-09-24 18:30:39,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 18:30:39,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:39,878 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:39,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:30:39,879 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:39,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:39,879 INFO L82 PathProgramCache]: Analyzing trace with hash -873076999, now seen corresponding path program 1 times [2020-09-24 18:30:39,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:39,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932047463] [2020-09-24 18:30:39,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:39,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:40,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:40,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 18:30:40,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:40,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-24 18:30:40,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:30:40,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:30:40,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:30:40,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:40,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:40,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:40,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:40,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:40,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:40,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:30:40,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:40,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:40,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:40,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:40,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:40,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 18:30:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:40,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:40,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:40,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:40,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:40,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:30:40,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:40,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:40,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:40,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:40,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:40,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:30:40,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932047463] [2020-09-24 18:30:40,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:40,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:30:40,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843248499] [2020-09-24 18:30:40,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:30:40,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:40,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:30:40,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:30:40,186 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 6 states. [2020-09-24 18:30:40,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:40,323 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2020-09-24 18:30:40,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:30:40,324 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-09-24 18:30:40,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:40,326 INFO L225 Difference]: With dead ends: 70 [2020-09-24 18:30:40,326 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 18:30:40,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:30:40,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 18:30:40,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2020-09-24 18:30:40,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-24 18:30:40,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2020-09-24 18:30:40,339 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 31 [2020-09-24 18:30:40,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:40,340 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2020-09-24 18:30:40,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:30:40,340 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2020-09-24 18:30:40,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-24 18:30:40,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:40,342 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:40,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:30:40,342 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:40,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:40,343 INFO L82 PathProgramCache]: Analyzing trace with hash 2057902492, now seen corresponding path program 1 times [2020-09-24 18:30:40,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:40,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623278233] [2020-09-24 18:30:40,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:40,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:40,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:40,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:40,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 18:30:40,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:40,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-09-24 18:30:40,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:30:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 18:30:40,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 18:30:40,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:40,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:40,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:40,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:40,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:40,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:40,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:30:40,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:40,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:40,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:40,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:40,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:40,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 18:30:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:40,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:40,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:40,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:40,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:40,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:40,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:30:40,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:40,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:40,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:40,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:40,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:40,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 18:30:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:40,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:40,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:40,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:40,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:40,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:30:40,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:40,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:40,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:40,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:40,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 18:30:40,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623278233] [2020-09-24 18:30:40,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:40,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:30:40,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272691124] [2020-09-24 18:30:40,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:30:40,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:40,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:30:40,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:30:40,788 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 7 states. [2020-09-24 18:30:40,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:40,941 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2020-09-24 18:30:40,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:30:40,941 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-09-24 18:30:40,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:40,943 INFO L225 Difference]: With dead ends: 77 [2020-09-24 18:30:40,943 INFO L226 Difference]: Without dead ends: 75 [2020-09-24 18:30:40,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:30:40,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-24 18:30:40,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2020-09-24 18:30:40,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-24 18:30:40,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2020-09-24 18:30:40,956 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 39 [2020-09-24 18:30:40,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:40,957 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2020-09-24 18:30:40,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:30:40,957 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2020-09-24 18:30:40,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 18:30:40,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:40,959 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:40,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:30:40,960 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:40,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:40,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1847294180, now seen corresponding path program 1 times [2020-09-24 18:30:40,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:40,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440861591] [2020-09-24 18:30:40,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:40,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 18:30:41,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-24 18:30:41,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:30:41,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:30:41,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 18:30:41,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:41,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:41,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:30:41,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:41,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:41,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:41,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:41,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 18:30:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:41,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:30:41,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:41,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:41,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:41,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:41,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 18:30:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:41,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 18:30:41,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:41,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:41,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:41,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:41,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 18:30:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:41,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:30:41,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:41,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:41,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 18:30:41,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440861591] [2020-09-24 18:30:41,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:41,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:30:41,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308570050] [2020-09-24 18:30:41,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:30:41,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:41,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:30:41,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:30:41,296 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand 8 states. [2020-09-24 18:30:41,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:41,502 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2020-09-24 18:30:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:30:41,503 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-09-24 18:30:41,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:41,504 INFO L225 Difference]: With dead ends: 81 [2020-09-24 18:30:41,504 INFO L226 Difference]: Without dead ends: 63 [2020-09-24 18:30:41,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:30:41,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-24 18:30:41,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-09-24 18:30:41,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-24 18:30:41,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2020-09-24 18:30:41,514 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 44 [2020-09-24 18:30:41,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:41,514 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2020-09-24 18:30:41,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:30:41,514 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2020-09-24 18:30:41,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 18:30:41,515 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:41,516 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:41,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:30:41,516 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:41,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:41,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1076854334, now seen corresponding path program 1 times [2020-09-24 18:30:41,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:41,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280204882] [2020-09-24 18:30:41,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:30:41,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-24 18:30:41,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:30:41,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:30:41,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:30:41,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:41,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:41,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:41,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:41,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:41,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:41,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:41,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:30:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:41,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:30:41,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:41,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:41,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:41,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:41,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:30:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:41,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:30:41,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:41,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:41,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:41,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 18:30:41,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280204882] [2020-09-24 18:30:41,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:41,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:30:41,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426705772] [2020-09-24 18:30:41,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:30:41,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:41,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:30:41,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:30:41,737 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand 6 states. [2020-09-24 18:30:41,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:41,796 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-09-24 18:30:41,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:30:41,797 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-09-24 18:30:41,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:41,800 INFO L225 Difference]: With dead ends: 67 [2020-09-24 18:30:41,800 INFO L226 Difference]: Without dead ends: 65 [2020-09-24 18:30:41,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:30:41,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-24 18:30:41,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-24 18:30:41,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 18:30:41,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-09-24 18:30:41,810 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 43 [2020-09-24 18:30:41,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:41,810 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-09-24 18:30:41,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:30:41,810 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-09-24 18:30:41,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 18:30:41,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:41,812 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:41,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:30:41,812 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:41,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:41,813 INFO L82 PathProgramCache]: Analyzing trace with hash 146364602, now seen corresponding path program 1 times [2020-09-24 18:30:41,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:41,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993391481] [2020-09-24 18:30:41,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:42,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:42,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 18:30:42,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:30:42,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666 [2020-09-24 18:30:42,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:30:42,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:30:42,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:30:42,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:42,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:42,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:42,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:42,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:42,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:42,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:30:42,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:42,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:42,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:42,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:42,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:42,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:30:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:42,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:42,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:42,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:42,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:42,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:30:42,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:42,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:42,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:42,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:42,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:30:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:42,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:42,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:42,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:42,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:42,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:30:42,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:42,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:42,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 18:30:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:42,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:42,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:42,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:42,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:42,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:30:42,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:42,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:42,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 18:30:42,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993391481] [2020-09-24 18:30:42,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:42,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 18:30:42,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496618950] [2020-09-24 18:30:42,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:30:42,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:42,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:30:42,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:30:42,687 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 9 states. [2020-09-24 18:30:42,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:42,933 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2020-09-24 18:30:42,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:30:42,934 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-09-24 18:30:42,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:42,935 INFO L225 Difference]: With dead ends: 98 [2020-09-24 18:30:42,935 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 18:30:42,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:30:42,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 18:30:42,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 77. [2020-09-24 18:30:42,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-24 18:30:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-09-24 18:30:42,947 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 48 [2020-09-24 18:30:42,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:42,947 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-09-24 18:30:42,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:30:42,948 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-09-24 18:30:42,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 18:30:42,949 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:42,949 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:42,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:30:42,950 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:42,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:42,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1943579560, now seen corresponding path program 1 times [2020-09-24 18:30:42,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:42,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483430151] [2020-09-24 18:30:42,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:42,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:43,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 18:30:43,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:43,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-09-24 18:30:43,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:30:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 18:30:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 18:30:43,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:43,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:43,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:43,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:43,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:43,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:30:43,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:43,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:43,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:43,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:43,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:43,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:30:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:43,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:43,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:43,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:43,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:30:43,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:43,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:43,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:43,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:43,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:43,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:30:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:43,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:43,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:43,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:43,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:30:43,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:43,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:43,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:43,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:43,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:43,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 18:30:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:43,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:43,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:43,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:43,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:43,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:43,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:43,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:43,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:43,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:43,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 18:30:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:43,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:43,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:43,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:43,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:43,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:43,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:43,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:43,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:43,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:43,494 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 18:30:43,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483430151] [2020-09-24 18:30:43,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:43,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:30:43,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477358462] [2020-09-24 18:30:43,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:30:43,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:43,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:30:43,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:30:43,496 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 7 states. [2020-09-24 18:30:43,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:43,606 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2020-09-24 18:30:43,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:30:43,607 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-09-24 18:30:43,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:43,608 INFO L225 Difference]: With dead ends: 83 [2020-09-24 18:30:43,608 INFO L226 Difference]: Without dead ends: 81 [2020-09-24 18:30:43,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:30:43,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-24 18:30:43,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-24 18:30:43,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-24 18:30:43,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2020-09-24 18:30:43,618 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 56 [2020-09-24 18:30:43,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:43,618 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2020-09-24 18:30:43,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:30:43,619 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2020-09-24 18:30:43,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 18:30:43,620 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:43,620 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:43,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:30:43,620 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:43,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:43,621 INFO L82 PathProgramCache]: Analyzing trace with hash 903884048, now seen corresponding path program 1 times [2020-09-24 18:30:43,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:43,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650476032] [2020-09-24 18:30:43,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:43,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:43,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 18:30:43,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:43,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-24 18:30:43,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:43,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:30:43,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:30:43,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-24 18:30:43,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:43,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:43,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:43,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:43,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:43,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:43,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:43,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:43,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:43,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:43,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:43,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:30:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:43,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:43,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:43,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:43,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:30:43,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:43,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:43,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:43,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:43,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:43,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:30:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:43,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:43,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:43,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:43,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:30:43,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:43,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:43,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:43,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:43,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 18:30:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:43,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:43,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:43,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:43,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:43,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:43,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:43,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 18:30:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:43,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:43,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:43,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:43,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:30:43,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:43,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:43,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-24 18:30:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:43,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:43,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:43,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:43,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:43,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:30:43,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:43,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:43,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:43,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:43,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:44,003 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-24 18:30:44,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650476032] [2020-09-24 18:30:44,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:44,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:30:44,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284077315] [2020-09-24 18:30:44,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:30:44,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:44,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:30:44,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:30:44,006 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 8 states. [2020-09-24 18:30:44,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:44,258 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-09-24 18:30:44,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:30:44,259 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-09-24 18:30:44,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:44,261 INFO L225 Difference]: With dead ends: 100 [2020-09-24 18:30:44,261 INFO L226 Difference]: Without dead ends: 98 [2020-09-24 18:30:44,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:30:44,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-24 18:30:44,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2020-09-24 18:30:44,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-24 18:30:44,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2020-09-24 18:30:44,272 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 61 [2020-09-24 18:30:44,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:44,272 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2020-09-24 18:30:44,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:30:44,272 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2020-09-24 18:30:44,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 18:30:44,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:44,274 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:44,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 18:30:44,274 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:44,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:44,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1662212275, now seen corresponding path program 1 times [2020-09-24 18:30:44,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:44,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189001747] [2020-09-24 18:30:44,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:44,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:44,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:44,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:45,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:45,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 18:30:45,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:30:45,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1668 [2020-09-24 18:30:45,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:45,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:30:45,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 18:30:45,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 18:30:45,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:46,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:46,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:46,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:46,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:46,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:46,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:46,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:46,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:46,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:30:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:46,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:46,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:46,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:46,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:46,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:46,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:30:46,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:46,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:46,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:46,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:46,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:46,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:30:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:46,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:46,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:46,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:46,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:46,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:30:46,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:46,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:46,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 18:30:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:46,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:46,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:46,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:46,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:46,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:46,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:46,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:46,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:46,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:46,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 18:30:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:46,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:46,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:46,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:46,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:46,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:30:46,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:46,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:46,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:46,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:46,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:46,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-24 18:30:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:46,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:46,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:46,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:46,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:46,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:46,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:46,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:46,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:46,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:46,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:46,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:30:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:46,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:46,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:46,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:46,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:46,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:30:46,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:46,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:46,156 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-24 18:30:46,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189001747] [2020-09-24 18:30:46,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:46,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 18:30:46,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024472803] [2020-09-24 18:30:46,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:30:46,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:46,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:30:46,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:30:46,159 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand 9 states. [2020-09-24 18:30:46,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:46,361 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2020-09-24 18:30:46,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:30:46,362 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-24 18:30:46,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:46,364 INFO L225 Difference]: With dead ends: 100 [2020-09-24 18:30:46,365 INFO L226 Difference]: Without dead ends: 98 [2020-09-24 18:30:46,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-09-24 18:30:46,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-24 18:30:46,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-24 18:30:46,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-24 18:30:46,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2020-09-24 18:30:46,381 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 69 [2020-09-24 18:30:46,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:46,382 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2020-09-24 18:30:46,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:30:46,382 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2020-09-24 18:30:46,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-24 18:30:46,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:46,385 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:46,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 18:30:46,385 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:46,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:46,386 INFO L82 PathProgramCache]: Analyzing trace with hash 71900773, now seen corresponding path program 1 times [2020-09-24 18:30:46,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:46,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206187694] [2020-09-24 18:30:46,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:46,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:46,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:47,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:47,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-24 18:30:47,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:47,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1464 [2020-09-24 18:30:47,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:47,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:30:47,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:30:47,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 18:30:47,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:48,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:48,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:48,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:48,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:48,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:48,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:48,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:48,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:48,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:48,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:48,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:48,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:30:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:48,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:48,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:48,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:48,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:48,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:30:48,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:48,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:48,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:48,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:48,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:48,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:30:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:48,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:48,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:48,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:48,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:48,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:30:48,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:48,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:48,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:48,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 18:30:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:48,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:48,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:48,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:48,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:48,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:30:48,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:48,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:48,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:48,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:48,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:48,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 18:30:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:48,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:48,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:48,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:48,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:48,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:48,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:48,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:48,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:48,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:48,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:48,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-24 18:30:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:48,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:48,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:48,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:48,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:48,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:30:48,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:48,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:48,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:48,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:48,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:48,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:30:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:48,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:48,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:48,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:48,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:48,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:30:48,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:48,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:48,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:48,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:48,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 18:30:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:48,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:48,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:48,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:48,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:48,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:30:48,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:48,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:48,220 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-24 18:30:48,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206187694] [2020-09-24 18:30:48,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:48,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 18:30:48,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045846670] [2020-09-24 18:30:48,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 18:30:48,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:48,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 18:30:48,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:30:48,224 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 12 states. [2020-09-24 18:30:48,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:48,520 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2020-09-24 18:30:48,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 18:30:48,521 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-09-24 18:30:48,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:48,523 INFO L225 Difference]: With dead ends: 111 [2020-09-24 18:30:48,523 INFO L226 Difference]: Without dead ends: 97 [2020-09-24 18:30:48,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-24 18:30:48,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-24 18:30:48,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-09-24 18:30:48,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-24 18:30:48,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2020-09-24 18:30:48,533 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 74 [2020-09-24 18:30:48,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:48,534 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2020-09-24 18:30:48,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 18:30:48,534 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2020-09-24 18:30:48,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-24 18:30:48,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:48,540 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:48,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 18:30:48,541 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:48,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:48,541 INFO L82 PathProgramCache]: Analyzing trace with hash -50388093, now seen corresponding path program 1 times [2020-09-24 18:30:48,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:48,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330522723] [2020-09-24 18:30:48,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:48,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:48,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:48,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:48,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:50,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:50,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 18:30:50,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:30:50,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1781 [2020-09-24 18:30:50,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:50,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 18:30:50,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:30:50,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-24 18:30:50,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:50,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:50,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:50,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:50,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:50,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:50,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:50,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:50,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:50,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:50,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:50,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:50,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:30:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:50,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:50,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:50,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:50,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:50,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:50,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:50,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:50,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:50,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:50,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:50,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:30:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:50,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:50,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:50,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:50,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:50,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:30:50,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:50,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:50,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:50,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:50,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 18:30:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:50,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:50,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:50,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:50,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:50,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:50,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:50,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:50,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:50,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:50,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:50,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 18:30:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:50,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:50,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:50,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:50,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:50,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:50,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:50,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:50,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:50,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:50,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:50,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 18:30:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:50,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:50,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:50,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:50,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:50,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:30:50,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:50,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:50,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:50,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:50,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:50,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:30:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:50,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:50,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:50,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:50,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:50,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:30:50,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:50,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:50,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:50,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:50,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:50,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-24 18:30:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:50,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:50,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:50,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:50,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:50,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:30:50,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:50,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:50,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:50,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:50,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:50,601 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-24 18:30:50,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330522723] [2020-09-24 18:30:50,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:50,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 18:30:50,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041613659] [2020-09-24 18:30:50,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 18:30:50,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:50,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 18:30:50,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:30:50,604 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand 11 states. [2020-09-24 18:30:50,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:50,944 INFO L93 Difference]: Finished difference Result 128 states and 143 transitions. [2020-09-24 18:30:50,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 18:30:50,945 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-09-24 18:30:50,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:50,946 INFO L225 Difference]: With dead ends: 128 [2020-09-24 18:30:50,946 INFO L226 Difference]: Without dead ends: 126 [2020-09-24 18:30:50,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-09-24 18:30:50,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-24 18:30:50,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 107. [2020-09-24 18:30:50,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-24 18:30:50,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2020-09-24 18:30:50,956 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 78 [2020-09-24 18:30:50,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:50,957 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2020-09-24 18:30:50,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 18:30:50,957 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2020-09-24 18:30:50,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-24 18:30:50,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:50,958 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:50,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 18:30:50,959 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:50,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:50,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1911943399, now seen corresponding path program 2 times [2020-09-24 18:30:50,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:50,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205005313] [2020-09-24 18:30:50,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:50,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:51,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:52,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:52,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 18:30:52,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:52,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1542 [2020-09-24 18:30:52,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:52,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:30:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:30:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 18:30:52,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:52,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:52,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:52,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:52,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:52,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:52,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:30:52,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:52,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:52,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:52,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:30:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:52,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:52,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:52,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:52,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:52,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:30:52,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:52,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:52,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:30:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:52,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:52,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:52,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:52,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:52,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:30:52,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:52,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:52,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:52,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:52,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:52,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 18:30:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:52,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:52,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:52,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:52,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:52,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:30:52,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:52,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:52,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:52,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:52,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:52,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 18:30:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:52,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:52,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:52,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:52,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:52,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:30:52,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:52,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:52,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:52,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:52,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:52,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 18:30:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:52,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:52,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:52,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:52,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:52,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:30:52,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:52,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:52,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:52,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:52,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:52,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:30:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:52,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:52,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:52,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:52,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:52,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:30:52,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:52,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:52,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-24 18:30:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:52,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:52,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:52,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:52,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:52,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:30:52,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:52,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:52,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:52,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:52,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:52,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 18:30:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:52,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:52,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:52,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:52,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:52,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:30:52,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:52,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:52,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-24 18:30:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:52,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:53,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:53,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:53,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:53,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:30:53,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:53,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:53,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:53,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:53,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-09-24 18:30:53,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205005313] [2020-09-24 18:30:53,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:53,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 18:30:53,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46659455] [2020-09-24 18:30:53,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 18:30:53,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:53,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 18:30:53,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:30:53,036 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand 12 states. [2020-09-24 18:30:53,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:53,475 INFO L93 Difference]: Finished difference Result 126 states and 139 transitions. [2020-09-24 18:30:53,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 18:30:53,476 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-09-24 18:30:53,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:53,477 INFO L225 Difference]: With dead ends: 126 [2020-09-24 18:30:53,478 INFO L226 Difference]: Without dead ends: 124 [2020-09-24 18:30:53,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-09-24 18:30:53,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-24 18:30:53,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2020-09-24 18:30:53,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-24 18:30:53,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 133 transitions. [2020-09-24 18:30:53,489 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 133 transitions. Word has length 91 [2020-09-24 18:30:53,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:53,489 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 133 transitions. [2020-09-24 18:30:53,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 18:30:53,490 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 133 transitions. [2020-09-24 18:30:53,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-24 18:30:53,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:53,491 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:53,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 18:30:53,492 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:53,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:53,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1949077486, now seen corresponding path program 2 times [2020-09-24 18:30:53,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:53,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666349484] [2020-09-24 18:30:53,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:53,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:53,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:53,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:58,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:58,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-24 18:30:58,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:30:58,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:30:58,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:58,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:30:58,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 18:30:58,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-24 18:30:58,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:58,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:58,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:58,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:58,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:58,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:58,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:58,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:58,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:58,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:58,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:58,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:58,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:30:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:58,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:58,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:58,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:58,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:58,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:58,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:58,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:58,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:58,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:58,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:58,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:30:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:58,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:58,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:58,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:58,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:58,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:30:58,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:58,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:58,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:58,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:58,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:58,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 18:30:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:58,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:58,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:58,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:58,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:58,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:58,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:58,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:58,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:58,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:58,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:58,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 18:30:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:58,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:58,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:58,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:58,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:58,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:58,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:58,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:58,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:58,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:58,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:58,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 18:30:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:58,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:58,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:58,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:58,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:58,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:58,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:58,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:58,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:58,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:58,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:58,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:30:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:58,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:58,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:58,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:58,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:58,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:58,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:58,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:58,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:58,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:58,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:58,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-24 18:30:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:58,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:58,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:58,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:58,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:58,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:58,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:58,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:58,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:58,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:58,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:58,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 18:30:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:58,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:58,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:58,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:58,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:58,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:30:58,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:58,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:58,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:58,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:58,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:58,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-24 18:30:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:58,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:58,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:58,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:58,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:58,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:30:58,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:58,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:58,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:58,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:58,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:58,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 18:30:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:58,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:58,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:58,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:58,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:58,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:58,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:30:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:30:58,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:58,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-24 18:30:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:58,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:58,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:58,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:58,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:58,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:58,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:58,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:58,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:58,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:58,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 48 proven. 18 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2020-09-24 18:30:58,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666349484] [2020-09-24 18:30:58,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:58,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 18:30:58,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368143245] [2020-09-24 18:30:58,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 18:30:58,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:58,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 18:30:58,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:30:58,806 INFO L87 Difference]: Start difference. First operand 120 states and 133 transitions. Second operand 12 states. [2020-09-24 18:30:59,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:59,206 INFO L93 Difference]: Finished difference Result 130 states and 147 transitions. [2020-09-24 18:30:59,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 18:30:59,207 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2020-09-24 18:30:59,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:59,208 INFO L225 Difference]: With dead ends: 130 [2020-09-24 18:30:59,209 INFO L226 Difference]: Without dead ends: 108 [2020-09-24 18:30:59,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2020-09-24 18:30:59,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-24 18:30:59,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-09-24 18:30:59,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-24 18:30:59,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 115 transitions. [2020-09-24 18:30:59,219 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 115 transitions. Word has length 104 [2020-09-24 18:30:59,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:59,219 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 115 transitions. [2020-09-24 18:30:59,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 18:30:59,219 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 115 transitions. [2020-09-24 18:30:59,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-24 18:30:59,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:59,221 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:59,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 18:30:59,221 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:59,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:59,222 INFO L82 PathProgramCache]: Analyzing trace with hash 55355532, now seen corresponding path program 2 times [2020-09-24 18:30:59,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:59,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201951460] [2020-09-24 18:30:59,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:59,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:59,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:59,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:59,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:01,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:04,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:04,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 18:31:04,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:31:04,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-24 18:31:04,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:04,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:31:04,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:31:04,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-24 18:31:04,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:04,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:04,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:04,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:04,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:31:04,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:04,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:31:04,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:04,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:04,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:04,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:04,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:04,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:31:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:04,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:04,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:04,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:04,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:04,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:31:04,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:04,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:04,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:04,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:04,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:04,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:31:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:04,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:04,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:04,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:04,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:04,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:31:04,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:04,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:04,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:04,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 18:31:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:04,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:04,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:04,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:04,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:04,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:31:04,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:04,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:04,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:04,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:04,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 18:31:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:04,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:04,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:04,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:04,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:04,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:31:04,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:04,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:04,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:04,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:04,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:04,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 18:31:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:04,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:04,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:04,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:04,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:04,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:31:04,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:04,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:04,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:04,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:04,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:04,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:31:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:04,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:04,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:04,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:04,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:04,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:04,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:04,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:04,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:04,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:04,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:04,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-24 18:31:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:04,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:04,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:04,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:04,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:04,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:04,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:04,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:04,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:04,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:04,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 18:31:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:04,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:04,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:04,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:04,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:04,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:04,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:04,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:04,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:04,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:04,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:04,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 18:31:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:04,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:04,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:04,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:04,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:04,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:31:04,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:04,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:04,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-24 18:31:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:04,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:04,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:04,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:04,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:04,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:04,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:04,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:04,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 18:31:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:04,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:04,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:04,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:04,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:04,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:04,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:04,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:04,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:04,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:04,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 22 proven. 42 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-09-24 18:31:04,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201951460] [2020-09-24 18:31:04,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:31:04,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 18:31:04,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291666602] [2020-09-24 18:31:04,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 18:31:04,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:04,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 18:31:04,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-09-24 18:31:04,680 INFO L87 Difference]: Start difference. First operand 108 states and 115 transitions. Second operand 16 states. [2020-09-24 18:31:05,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:05,249 INFO L93 Difference]: Finished difference Result 136 states and 148 transitions. [2020-09-24 18:31:05,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 18:31:05,250 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2020-09-24 18:31:05,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:05,251 INFO L225 Difference]: With dead ends: 136 [2020-09-24 18:31:05,251 INFO L226 Difference]: Without dead ends: 134 [2020-09-24 18:31:05,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=211, Invalid=719, Unknown=0, NotChecked=0, Total=930 [2020-09-24 18:31:05,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-24 18:31:05,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 120. [2020-09-24 18:31:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-24 18:31:05,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2020-09-24 18:31:05,262 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 108 [2020-09-24 18:31:05,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:05,263 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2020-09-24 18:31:05,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 18:31:05,263 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2020-09-24 18:31:05,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-24 18:31:05,264 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:05,265 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:31:05,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 18:31:05,265 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:05,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:05,265 INFO L82 PathProgramCache]: Analyzing trace with hash -78339458, now seen corresponding path program 3 times [2020-09-24 18:31:05,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:05,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389886281] [2020-09-24 18:31:05,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:05,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:05,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:05,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:10,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:10,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 18:31:10,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:31:10,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:31:10,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:10,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:31:10,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 18:31:10,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 18:31:10,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:10,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:10,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:10,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:10,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:31:10,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:10,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:31:10,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:10,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:10,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:10,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:10,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:10,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:31:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:10,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:10,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:10,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:10,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:10,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:31:10,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:10,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:10,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:10,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:10,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:31:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:10,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:10,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:10,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:10,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:10,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:31:10,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:10,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:10,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:10,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 18:31:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:10,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:10,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:10,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:10,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:10,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:10,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:10,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:10,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:10,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:10,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:10,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 18:31:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:10,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:10,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:10,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:10,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:10,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:31:10,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:10,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:10,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:10,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:10,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:10,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 18:31:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:10,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:10,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:10,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:10,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:10,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:31:10,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:10,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:10,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:31:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:10,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:10,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:10,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:10,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:10,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:31:10,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:10,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:10,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:10,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:10,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:10,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-24 18:31:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:10,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:10,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:10,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:10,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:10,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:10,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:10,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:10,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:10,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:10,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:10,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 18:31:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:10,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:10,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:10,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:10,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:10,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:31:10,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:10,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:10,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:10,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:10,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 18:31:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:10,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:10,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:10,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:10,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:10,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:10,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:10,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:10,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:10,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:10,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:10,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-24 18:31:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:10,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:10,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:10,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:10,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:10,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:31:10,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:10,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:31:10,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:10,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:31:10,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:10,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 18:31:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:10,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:10,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:10,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:10,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:10,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:31:10,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:10,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:10,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 18:31:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:10,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:10,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:10,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:10,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:10,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:10,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:10,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:10,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:10,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:10,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:10,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-24 18:31:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:10,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:10,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:10,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:10,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:10,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:31:10,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:10,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 52 proven. 54 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-09-24 18:31:10,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389886281] [2020-09-24 18:31:10,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:31:10,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 18:31:10,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069396152] [2020-09-24 18:31:10,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 18:31:10,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:10,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 18:31:10,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:31:10,640 INFO L87 Difference]: Start difference. First operand 120 states and 128 transitions. Second operand 12 states. [2020-09-24 18:31:11,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:11,099 INFO L93 Difference]: Finished difference Result 124 states and 132 transitions. [2020-09-24 18:31:11,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 18:31:11,100 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 121 [2020-09-24 18:31:11,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:11,101 INFO L225 Difference]: With dead ends: 124 [2020-09-24 18:31:11,101 INFO L226 Difference]: Without dead ends: 119 [2020-09-24 18:31:11,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2020-09-24 18:31:11,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-24 18:31:11,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2020-09-24 18:31:11,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-24 18:31:11,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 125 transitions. [2020-09-24 18:31:11,112 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 125 transitions. Word has length 121 [2020-09-24 18:31:11,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:11,112 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 125 transitions. [2020-09-24 18:31:11,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 18:31:11,112 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 125 transitions. [2020-09-24 18:31:11,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-24 18:31:11,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:11,114 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:31:11,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 18:31:11,115 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:11,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:11,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1897035733, now seen corresponding path program 3 times [2020-09-24 18:31:11,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:11,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388047363] [2020-09-24 18:31:11,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:11,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:11,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:11,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:11,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:12,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:13,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:15,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:16,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:16,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-24 18:31:16,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:31:16,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:31:16,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:16,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 18:31:16,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:31:16,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-24 18:31:16,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:16,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:16,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:16,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:16,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:31:16,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:16,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:31:16,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:16,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:16,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:16,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:16,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:16,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:31:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:16,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:16,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:16,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:16,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:16,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:31:16,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:16,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:16,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:31:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:16,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:16,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:16,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:16,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:16,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:31:16,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:16,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:16,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:16,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:16,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:16,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 18:31:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:16,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:16,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:16,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:16,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:16,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:16,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:16,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:16,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:16,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:16,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:16,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 18:31:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:16,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:16,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:16,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:16,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:16,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:31:16,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:16,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:16,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:16,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:16,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:16,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 18:31:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:16,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:16,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:16,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:16,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:16,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:31:16,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:16,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:16,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:16,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:16,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:16,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:31:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:16,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:16,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:16,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:16,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:16,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:31:16,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:16,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:16,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:16,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-24 18:31:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:16,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:16,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:16,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:16,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:16,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:16,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:16,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:16,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:16,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:16,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:16,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 18:31:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:16,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:16,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:16,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:16,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:16,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:31:16,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:16,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:16,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:16,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:16,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:16,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 18:31:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:16,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:16,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:16,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:16,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:16,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:16,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:16,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:16,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:16,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:16,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:16,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-24 18:31:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:16,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:16,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:16,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:16,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:16,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:31:16,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:16,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:16,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 18:31:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:16,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:16,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:16,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:16,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:16,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:31:16,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:16,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:16,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:16,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:16,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:16,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 18:31:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:16,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:16,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:16,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:16,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:16,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:31:16,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:16,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:16,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:16,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:16,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:16,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-09-24 18:31:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:16,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:16,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:16,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:16,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:16,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:31:16,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:16,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:16,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-24 18:31:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:16,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:16,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:16,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:16,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:16,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:31:16,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:16,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:16,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:16,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:16,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 18:31:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:16,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:16,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:16,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:16,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:16,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:16,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:16,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:16,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:16,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:16,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 30 proven. 84 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-09-24 18:31:17,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388047363] [2020-09-24 18:31:17,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:31:17,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 18:31:17,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598166406] [2020-09-24 18:31:17,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 18:31:17,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:17,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 18:31:17,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2020-09-24 18:31:17,055 INFO L87 Difference]: Start difference. First operand 119 states and 125 transitions. Second operand 21 states. [2020-09-24 18:31:17,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:17,968 INFO L93 Difference]: Finished difference Result 150 states and 161 transitions. [2020-09-24 18:31:17,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 18:31:17,969 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 138 [2020-09-24 18:31:17,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:17,971 INFO L225 Difference]: With dead ends: 150 [2020-09-24 18:31:17,971 INFO L226 Difference]: Without dead ends: 148 [2020-09-24 18:31:17,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=339, Invalid=1221, Unknown=0, NotChecked=0, Total=1560 [2020-09-24 18:31:17,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-09-24 18:31:17,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 137. [2020-09-24 18:31:17,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-09-24 18:31:17,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 146 transitions. [2020-09-24 18:31:17,983 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 146 transitions. Word has length 138 [2020-09-24 18:31:17,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:17,984 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 146 transitions. [2020-09-24 18:31:17,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 18:31:17,984 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 146 transitions. [2020-09-24 18:31:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-24 18:31:17,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:17,986 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:31:17,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 18:31:17,987 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:17,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:17,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1751458142, now seen corresponding path program 4 times [2020-09-24 18:31:17,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:17,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302258605] [2020-09-24 18:31:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:18,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:18,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:19,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:19,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:22,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-09-24 18:31:23,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:31:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:31:23,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 18:31:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:31:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-09-24 18:31:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:31:23,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:31:23,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:23,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:31:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:23,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:31:23,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:23,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:23,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:31:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:23,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:23,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:23,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:23,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 18:31:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:23,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:31:23,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:23,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:23,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 18:31:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:23,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:31:23,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:23,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:23,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 18:31:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:23,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:31:23,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:23,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:23,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:31:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:23,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:23,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:23,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-24 18:31:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:23,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:31:23,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 18:31:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:23,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:31:23,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:23,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:23,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 18:31:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:23,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:23,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:23,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:23,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-24 18:31:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:23,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:23,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:23,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:23,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 18:31:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:23,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:31:23,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:23,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:23,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 18:31:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:23,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:31:23,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:23,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:23,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-09-24 18:31:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:23,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:31:23,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:23,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:23,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-24 18:31:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:23,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:31:23,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:23,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:23,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 18:31:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:23,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:31:23,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:23,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:23,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 18:31:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:23,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:31:23,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:23,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:23,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-09-24 18:31:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:23,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:31:23,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:23,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:23,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 18:31:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:23,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:31:23,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:23,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:23,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-24 18:31:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:23,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:23,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:23,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:23,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:23,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:31:23,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:23,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:23,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:23,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:23,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 38 proven. 132 refuted. 0 times theorem prover too weak. 692 trivial. 0 not checked. [2020-09-24 18:31:23,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302258605] [2020-09-24 18:31:23,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:31:23,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 18:31:23,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324055868] [2020-09-24 18:31:23,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 18:31:23,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:23,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 18:31:23,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-09-24 18:31:23,760 INFO L87 Difference]: Start difference. First operand 137 states and 146 transitions. Second operand 23 states. [2020-09-24 18:31:24,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:24,361 INFO L93 Difference]: Finished difference Result 139 states and 147 transitions. [2020-09-24 18:31:24,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 18:31:24,361 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 168 [2020-09-24 18:31:24,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:24,362 INFO L225 Difference]: With dead ends: 139 [2020-09-24 18:31:24,362 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 18:31:24,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 18:31:24,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 18:31:24,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 18:31:24,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 18:31:24,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 18:31:24,365 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 168 [2020-09-24 18:31:24,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:24,365 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 18:31:24,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 18:31:24,365 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 18:31:24,365 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 18:31:24,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 18:31:24,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 18:31:24,622 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2020-09-24 18:31:24,821 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2020-09-24 18:31:24,990 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2020-09-24 18:31:25,325 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 28 [2020-09-24 18:31:25,531 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 35 [2020-09-24 18:31:25,710 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 35 [2020-09-24 18:31:25,760 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 18:31:25,760 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:31:25,761 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:31:25,761 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 18:31:25,761 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 18:31:25,761 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:31:25,761 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 18:31:25,761 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 18:31:25,761 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 18:31:25,761 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 18:31:25,762 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 18:31:25,762 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 18:31:25,762 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 45) no Hoare annotation was computed. [2020-09-24 18:31:25,762 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 18:31:25,762 INFO L271 CegarLoopResult]: At program point L44(lines 14 45) the Hoare annotation is: true [2020-09-24 18:31:25,762 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-24 18:31:25,762 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-24 18:31:25,763 INFO L264 CegarLoopResult]: At program point L36(lines 26 37) the Hoare annotation is: (let ((.cse0 (= main_~bufferlen~0 (+ main_~buflim~0 2))) (.cse1 (+ main_~buf~0 main_~inlen~0))) (or (and (= main_~in~0 0) .cse0 (<= (+ main_~buflim~0 3) .cse1) (< main_~buf~0 (+ main_~buflim~0 1)) (= main_~buf~0 0)) (and (<= 1 main_~buf~0) .cse0 (<= main_~buf~0 main_~buflim~0) (<= (+ main_~in~0 main_~buflim~0 3) .cse1) (<= (+ main_~bufferlen~0 1) main_~inlen~0) (<= 0 main_~in~0)))) [2020-09-24 18:31:25,764 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-24 18:31:25,764 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-09-24 18:31:25,764 INFO L268 CegarLoopResult]: For program point L28(lines 28 29) no Hoare annotation was computed. [2020-09-24 18:31:25,764 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 18:31:25,764 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 18:31:25,765 INFO L268 CegarLoopResult]: For program point L20-1(lines 14 45) no Hoare annotation was computed. [2020-09-24 18:31:25,765 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 18:31:25,765 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 18:31:25,765 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 18:31:25,765 INFO L264 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= 1 main_~buf~0) (<= (+ main_~buf~0 1) main_~bufferlen~0)) [2020-09-24 18:31:25,765 INFO L264 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (and (<= (+ main_~buf~0 1) main_~bufferlen~0) (<= 2 main_~bufferlen~0)) [2020-09-24 18:31:25,765 INFO L268 CegarLoopResult]: For program point L33(lines 33 34) no Hoare annotation was computed. [2020-09-24 18:31:25,765 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 18:31:25,766 INFO L268 CegarLoopResult]: For program point L21(lines 14 45) no Hoare annotation was computed. [2020-09-24 18:31:25,766 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 18:31:25,766 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 18:31:25,767 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-24 18:31:25,767 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 45) no Hoare annotation was computed. [2020-09-24 18:31:25,767 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-24 18:31:25,767 INFO L264 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (and (<= 0 main_~buf~0) (<= (+ main_~buf~0 2) main_~bufferlen~0)) [2020-09-24 18:31:25,767 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-24 18:31:25,767 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-09-24 18:31:25,768 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (let ((.cse3 (+ main_~buf~0 2))) (let ((.cse0 (+ main_~buflim~0 2)) (.cse1 (+ main_~buf~0 main_~inlen~0)) (.cse2 (not (= .cse3 main_~bufferlen~0)))) (or (and (= main_~in~0 0) (= main_~bufferlen~0 .cse0) (<= (+ main_~buflim~0 3) .cse1) (< main_~buf~0 (+ main_~buflim~0 1)) (= main_~buf~0 0) .cse2) (and (<= 1 main_~buf~0) (<= main_~bufferlen~0 .cse0) (<= .cse0 main_~bufferlen~0) (<= .cse3 main_~bufferlen~0) (<= (+ main_~in~0 main_~buflim~0 3) .cse1) .cse2 (<= 0 main_~in~0) (<= (+ main_~bufferlen~0 1) main_~inlen~0))))) [2020-09-24 18:31:25,768 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 45) the Hoare annotation is: true [2020-09-24 18:31:25,769 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (let ((.cse3 (+ main_~buf~0 2))) (let ((.cse0 (+ main_~buflim~0 2)) (.cse1 (+ main_~buf~0 main_~inlen~0)) (.cse2 (not (= .cse3 main_~bufferlen~0)))) (or (and (= main_~in~0 0) (= main_~bufferlen~0 .cse0) (<= (+ main_~buflim~0 3) .cse1) (< main_~buf~0 (+ main_~buflim~0 1)) (= main_~buf~0 0) .cse2) (and (<= 1 main_~buf~0) (<= main_~bufferlen~0 .cse0) (<= .cse0 main_~bufferlen~0) (<= .cse3 main_~bufferlen~0) (<= (+ main_~in~0 main_~buflim~0 3) .cse1) .cse2 (<= 0 main_~in~0) (<= (+ main_~bufferlen~0 1) main_~inlen~0))))) [2020-09-24 18:31:25,769 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 37) no Hoare annotation was computed. [2020-09-24 18:31:25,769 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-24 18:31:25,769 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 18:31:25,769 INFO L268 CegarLoopResult]: For program point L26-4(line 26) no Hoare annotation was computed. [2020-09-24 18:31:25,769 INFO L264 CegarLoopResult]: At program point L26-5(lines 26 37) the Hoare annotation is: (and (<= 0 main_~buf~0) (<= (+ main_~buf~0 2) main_~bufferlen~0)) [2020-09-24 18:31:25,769 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 18:31:25,770 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-24 18:31:25,770 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-09-24 18:31:25,770 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-24 18:31:25,770 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (<= 1 main_~buf~0) (= main_~bufferlen~0 (+ main_~buflim~0 2)) (<= (+ main_~buf~0 2) main_~bufferlen~0) (<= (+ main_~in~0 main_~buflim~0 3) (+ main_~buf~0 main_~inlen~0)) (<= (+ main_~bufferlen~0 1) main_~inlen~0) (<= 0 main_~in~0)) [2020-09-24 18:31:25,770 INFO L264 CegarLoopResult]: At program point L35-1(line 35) the Hoare annotation is: (and (<= 1 main_~buf~0) (= main_~bufferlen~0 (+ main_~buflim~0 2)) (<= (+ main_~buf~0 2) main_~bufferlen~0) (<= (+ main_~in~0 main_~buflim~0 3) (+ main_~buf~0 main_~inlen~0)) (<= (+ main_~bufferlen~0 1) main_~inlen~0) (<= 0 main_~in~0)) [2020-09-24 18:31:25,770 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 18:31:25,770 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 18:31:25,770 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 18:31:25,771 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 18:31:25,771 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 18:31:25,771 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 18:31:25,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:31:25 BoogieIcfgContainer [2020-09-24 18:31:25,799 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:31:25,801 INFO L168 Benchmark]: Toolchain (without parser) took 47848.79 ms. Allocated memory was 143.1 MB in the beginning and 417.9 MB in the end (delta: 274.7 MB). Free memory was 106.8 MB in the beginning and 144.9 MB in the end (delta: -38.1 MB). Peak memory consumption was 236.7 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:25,801 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 18:31:25,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.02 ms. Allocated memory is still 143.1 MB. Free memory was 106.2 MB in the beginning and 96.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:25,803 INFO L168 Benchmark]: Boogie Preprocessor took 111.12 ms. Allocated memory was 143.1 MB in the beginning and 204.5 MB in the end (delta: 61.3 MB). Free memory was 96.4 MB in the beginning and 183.6 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:25,804 INFO L168 Benchmark]: RCFGBuilder took 421.10 ms. Allocated memory is still 204.5 MB. Free memory was 183.6 MB in the beginning and 167.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:25,804 INFO L168 Benchmark]: TraceAbstraction took 46998.79 ms. Allocated memory was 204.5 MB in the beginning and 417.9 MB in the end (delta: 213.4 MB). Free memory was 167.1 MB in the beginning and 144.9 MB in the end (delta: 22.2 MB). Peak memory consumption was 235.6 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:25,807 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 308.02 ms. Allocated memory is still 143.1 MB. Free memory was 106.2 MB in the beginning and 96.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.12 ms. Allocated memory was 143.1 MB in the beginning and 204.5 MB in the end (delta: 61.3 MB). Free memory was 96.4 MB in the beginning and 183.6 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 421.10 ms. Allocated memory is still 204.5 MB. Free memory was 183.6 MB in the beginning and 167.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46998.79 ms. Allocated memory was 204.5 MB in the beginning and 417.9 MB in the end (delta: 213.4 MB). Free memory was 167.1 MB in the beginning and 144.9 MB in the end (delta: 22.2 MB). Peak memory consumption was 235.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((((in == 0 && bufferlen == buflim + 2) && buflim + 3 <= buf + inlen) && buf < buflim + 1) && buf == 0) || (((((1 <= buf && bufferlen == buflim + 2) && buf <= buflim) && in + buflim + 3 <= buf + inlen) && bufferlen + 1 <= inlen) && 0 <= in) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 45.4s, OverallIterations: 18, TraceHistogramMax: 20, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 940 SDtfs, 1071 SDslu, 4299 SDs, 0 SdLazy, 2385 SolverSat, 452 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 586 GetRequests, 310 SyntacticMatches, 2 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 88 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 60 PreInvPairs, 104 NumberOfFragments, 299 HoareAnnotationTreeSize, 60 FomulaSimplifications, 3286 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 15 FomulaSimplificationsInter, 2160 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 38.8s InterpolantComputationTime, 1323 NumberOfCodeBlocks, 1323 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1305 ConstructedInterpolants, 0 QuantifiedInterpolants, 470883 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 9 PerfectInterpolantSequences, 2566/2932 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 correct! Received shutdown request...