/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/apache-get-tag.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:24:31,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:24:31,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:24:31,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:24:31,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:24:31,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:24:31,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:24:31,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:24:31,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:24:31,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:24:31,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:24:31,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:24:31,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:24:31,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:24:31,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:24:31,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:24:31,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:24:31,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:24:31,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:24:31,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:24:31,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:24:31,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:24:31,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:24:31,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:24:31,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:24:31,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:24:31,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:24:31,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:24:31,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:24:31,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:24:31,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:24:31,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:24:31,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:24:31,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:24:31,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:24:31,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:24:31,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:24:31,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:24:31,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:24:31,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:24:31,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:24:31,662 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:24:31,720 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:24:31,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:24:31,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:24:31,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:24:31,725 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:24:31,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:24:31,729 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:24:31,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:24:31,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:24:31,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:24:31,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:24:31,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:24:31,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:24:31,731 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:24:31,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:24:31,731 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:24:31,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:24:31,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:24:31,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:24:31,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:24:31,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:24:31,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:24:31,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:24:31,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:24:31,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:24:31,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:24:31,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:24:31,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:24:31,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:24:31,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:24:32,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:24:32,265 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:24:32,270 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:24:32,272 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:24:32,273 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:24:32,275 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-09-25 11:24:32,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7e1015bd/cceef03e7ab44e1bb31d821efc2041e6/FLAG910f94fe2 [2020-09-25 11:24:32,922 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:24:32,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-09-25 11:24:32,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7e1015bd/cceef03e7ab44e1bb31d821efc2041e6/FLAG910f94fe2 [2020-09-25 11:24:33,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7e1015bd/cceef03e7ab44e1bb31d821efc2041e6 [2020-09-25 11:24:33,304 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:24:33,311 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:24:33,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:24:33,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:24:33,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:24:33,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:24:33" (1/1) ... [2020-09-25 11:24:33,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5709c55a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:33, skipping insertion in model container [2020-09-25 11:24:33,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:24:33" (1/1) ... [2020-09-25 11:24:33,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:24:33,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:24:33,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:24:33,578 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:24:33,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:24:33,617 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:24:33,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:33 WrapperNode [2020-09-25 11:24:33,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:24:33,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:24:33,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:24:33,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:24:33,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:33" (1/1) ... [2020-09-25 11:24:33,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:33" (1/1) ... [2020-09-25 11:24:33,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:33" (1/1) ... [2020-09-25 11:24:33,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:33" (1/1) ... [2020-09-25 11:24:33,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:33" (1/1) ... [2020-09-25 11:24:33,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:33" (1/1) ... [2020-09-25 11:24:33,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:33" (1/1) ... [2020-09-25 11:24:33,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:24:33,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:24:33,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:24:33,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:24:33,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:24:33,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:24:33,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:24:33,860 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 11:24:33,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 11:24:33,860 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:24:33,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:24:33,860 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 11:24:33,860 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 11:24:33,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 11:24:33,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:24:33,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:24:33,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:24:33,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:24:34,229 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:24:34,229 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 11:24:34,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:24:34 BoogieIcfgContainer [2020-09-25 11:24:34,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:24:34,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:24:34,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:24:34,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:24:34,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:24:33" (1/3) ... [2020-09-25 11:24:34,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46397135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:24:34, skipping insertion in model container [2020-09-25 11:24:34,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:33" (2/3) ... [2020-09-25 11:24:34,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46397135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:24:34, skipping insertion in model container [2020-09-25 11:24:34,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:24:34" (3/3) ... [2020-09-25 11:24:34,247 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2020-09-25 11:24:34,256 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:24:34,267 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:24:34,288 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:24:34,319 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:24:34,319 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:24:34,319 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:24:34,319 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:24:34,319 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:24:34,319 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:24:34,320 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:24:34,320 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:24:34,347 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-25 11:24:34,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 11:24:34,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:34,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:34,357 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:34,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:34,364 INFO L82 PathProgramCache]: Analyzing trace with hash -537390573, now seen corresponding path program 1 times [2020-09-25 11:24:34,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:34,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835855265] [2020-09-25 11:24:34,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:34,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:34,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:34,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:34,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 11:24:34,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:24:34,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 11:24:34,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:34,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:34,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:24:34,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:24:34,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:24:34,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:24:34,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:34,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:34,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:34,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:24:34,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:34,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:24:34,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:34,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:34,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:34,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:34,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:34,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:34,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:24:34,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835855265] [2020-09-25 11:24:34,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:24:34,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:24:34,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749922669] [2020-09-25 11:24:34,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:24:34,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:34,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:24:34,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:24:34,811 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 5 states. [2020-09-25 11:24:35,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:35,073 INFO L93 Difference]: Finished difference Result 157 states and 242 transitions. [2020-09-25 11:24:35,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:24:35,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 11:24:35,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:35,100 INFO L225 Difference]: With dead ends: 157 [2020-09-25 11:24:35,101 INFO L226 Difference]: Without dead ends: 89 [2020-09-25 11:24:35,111 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 [2020-09-25 11:24:35,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-25 11:24:35,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2020-09-25 11:24:35,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-25 11:24:35,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 104 transitions. [2020-09-25 11:24:35,202 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 104 transitions. Word has length 19 [2020-09-25 11:24:35,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:35,203 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 104 transitions. [2020-09-25 11:24:35,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:24:35,203 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 104 transitions. [2020-09-25 11:24:35,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 11:24:35,205 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:35,206 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] [2020-09-25 11:24:35,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:24:35,207 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:35,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:35,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1383579147, now seen corresponding path program 1 times [2020-09-25 11:24:35,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:35,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864024022] [2020-09-25 11:24:35,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:35,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:35,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:35,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:35,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:24:35,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:24:35,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-09-25 11:24:35,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:35,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:35,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:24:35,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:24:35,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 11:24:35,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:35,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:35,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:35,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:35,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:24:35,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:35,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:24:35,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:35,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:35,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:35,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:35,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:35,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:35,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 11:24:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:35,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:35,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:35,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:35,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:35,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:24:35,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:35,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:35,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:35,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:35,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:35,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:24:35,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864024022] [2020-09-25 11:24:35,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:24:35,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:24:35,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263422433] [2020-09-25 11:24:35,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:24:35,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:35,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:24:35,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:24:35,667 INFO L87 Difference]: Start difference. First operand 82 states and 104 transitions. Second operand 7 states. [2020-09-25 11:24:35,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:35,882 INFO L93 Difference]: Finished difference Result 94 states and 117 transitions. [2020-09-25 11:24:35,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:24:35,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-09-25 11:24:35,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:35,890 INFO L225 Difference]: With dead ends: 94 [2020-09-25 11:24:35,891 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 11:24:35,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:24:35,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 11:24:35,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-09-25 11:24:35,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 11:24:35,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2020-09-25 11:24:35,906 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 25 [2020-09-25 11:24:35,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:35,907 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2020-09-25 11:24:35,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:24:35,907 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2020-09-25 11:24:35,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 11:24:35,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:35,909 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 11:24:35,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:24:35,912 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:35,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:35,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1469174755, now seen corresponding path program 1 times [2020-09-25 11:24:35,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:35,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194049929] [2020-09-25 11:24:35,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:35,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:35,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:36,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:36,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:36,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:37,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:37,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:24:37,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:24:37,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1428 [2020-09-25 11:24:37,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:37,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:24:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:24:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:24:37,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:37,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:37,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:37,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:37,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:24:37,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:37,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:24:37,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:37,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:37,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:37,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 11:24:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:37,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:37,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:37,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:37,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:37,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:24:37,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:24:37,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:37,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:37,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:37,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:37,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:37,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:37,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 11:24:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:37,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:37,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:37,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:37,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:37,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:24:37,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:37,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:37,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:37,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:37,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:37,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 11:24:37,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194049929] [2020-09-25 11:24:37,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:24:37,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:24:37,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308852194] [2020-09-25 11:24:37,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:24:37,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:37,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:24:37,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:24:37,487 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand 7 states. [2020-09-25 11:24:37,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:37,703 INFO L93 Difference]: Finished difference Result 94 states and 111 transitions. [2020-09-25 11:24:37,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:24:37,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-25 11:24:37,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:37,708 INFO L225 Difference]: With dead ends: 94 [2020-09-25 11:24:37,708 INFO L226 Difference]: Without dead ends: 91 [2020-09-25 11:24:37,709 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 [2020-09-25 11:24:37,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-25 11:24:37,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2020-09-25 11:24:37,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 11:24:37,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2020-09-25 11:24:37,732 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 38 [2020-09-25 11:24:37,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:37,733 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2020-09-25 11:24:37,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:24:37,733 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2020-09-25 11:24:37,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 11:24:37,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:37,735 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] [2020-09-25 11:24:37,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:24:37,735 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:37,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:37,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1945975399, now seen corresponding path program 1 times [2020-09-25 11:24:37,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:37,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770243286] [2020-09-25 11:24:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:37,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:37,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:37,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:37,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:37,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:38,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:38,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:24:38,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:24:38,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1217 [2020-09-25 11:24:38,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:38,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:38,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:24:38,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:24:38,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:24:38,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:39,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:39,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:39,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:24:39,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:39,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:24:39,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:39,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:39,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:39,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:39,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:39,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:39,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 11:24:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:39,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:39,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:39,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:39,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:39,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:24:39,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:24:39,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:39,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:39,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:39,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:39,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:39,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:39,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 11:24:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:39,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:39,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:39,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:39,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:39,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:24:39,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:39,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:39,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:39,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:39,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:39,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 11:24:39,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770243286] [2020-09-25 11:24:39,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:24:39,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:24:39,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422433767] [2020-09-25 11:24:39,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:24:39,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:39,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:24:39,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:24:39,063 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand 7 states. [2020-09-25 11:24:39,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:39,232 INFO L93 Difference]: Finished difference Result 123 states and 147 transitions. [2020-09-25 11:24:39,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:24:39,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-25 11:24:39,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:39,234 INFO L225 Difference]: With dead ends: 123 [2020-09-25 11:24:39,234 INFO L226 Difference]: Without dead ends: 120 [2020-09-25 11:24:39,235 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 [2020-09-25 11:24:39,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-25 11:24:39,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2020-09-25 11:24:39,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-25 11:24:39,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 132 transitions. [2020-09-25 11:24:39,248 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 132 transitions. Word has length 38 [2020-09-25 11:24:39,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:39,249 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 132 transitions. [2020-09-25 11:24:39,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:24:39,249 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 132 transitions. [2020-09-25 11:24:39,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 11:24:39,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:39,252 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-09-25 11:24:39,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:24:39,252 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:39,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:39,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1177695863, now seen corresponding path program 1 times [2020-09-25 11:24:39,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:39,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602092181] [2020-09-25 11:24:39,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:39,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:39,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:40,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:40,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:24:40,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:24:40,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 820 [2020-09-25 11:24:40,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:40,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:40,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:24:40,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:24:40,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:24:40,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 11:24:40,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:40,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:40,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:40,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:24:40,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:40,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:24:40,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:40,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:40,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:40,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:40,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:40,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:40,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 11:24:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:40,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:40,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:40,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:40,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:40,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:24:40,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:40,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:40,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:40,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:40,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 11:24:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:40,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:40,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:40,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:40,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:40,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:24:40,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:40,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:40,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:24:40,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:40,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:24:40,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:40,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 11:24:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:40,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:40,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:40,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:40,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:40,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:24:40,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:40,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:40,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:40,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:40,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:40,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:40,320 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 11:24:40,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602092181] [2020-09-25 11:24:40,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:24:40,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:24:40,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108763994] [2020-09-25 11:24:40,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:24:40,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:40,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:24:40,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:24:40,323 INFO L87 Difference]: Start difference. First operand 111 states and 132 transitions. Second operand 10 states. [2020-09-25 11:24:40,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:40,594 INFO L93 Difference]: Finished difference Result 117 states and 137 transitions. [2020-09-25 11:24:40,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:24:40,599 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-09-25 11:24:40,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:40,604 INFO L225 Difference]: With dead ends: 117 [2020-09-25 11:24:40,604 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 11:24:40,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:24:40,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 11:24:40,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-09-25 11:24:40,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-25 11:24:40,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2020-09-25 11:24:40,628 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 46 [2020-09-25 11:24:40,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:40,629 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2020-09-25 11:24:40,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:24:40,630 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2020-09-25 11:24:40,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 11:24:40,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:40,633 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, 1] [2020-09-25 11:24:40,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:24:40,634 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:40,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:40,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1826770767, now seen corresponding path program 1 times [2020-09-25 11:24:40,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:40,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601857119] [2020-09-25 11:24:40,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:40,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:40,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:41,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:41,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 11:24:41,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:24:41,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 904 [2020-09-25 11:24:41,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:41,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:41,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:24:41,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:24:41,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 11:24:41,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:41,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:41,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:41,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:24:41,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:41,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:24:41,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:41,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:41,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:41,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:41,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:41,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:41,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 11:24:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:41,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:41,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:41,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:41,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:41,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:24:41,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:41,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:41,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:41,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:41,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:24:41,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 11:24:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:41,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:41,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:41,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:41,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:41,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:24:41,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:41,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:41,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:41,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:41,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 11:24:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:41,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:41,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:41,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:41,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:41,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:24:41,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:41,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:41,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:41,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:41,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:41,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:41,801 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 11:24:41,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601857119] [2020-09-25 11:24:41,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:24:41,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 11:24:41,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067138190] [2020-09-25 11:24:41,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:24:41,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:41,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:24:41,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:24:41,805 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand 9 states. [2020-09-25 11:24:42,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:42,140 INFO L93 Difference]: Finished difference Result 130 states and 151 transitions. [2020-09-25 11:24:42,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:24:42,141 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-09-25 11:24:42,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:42,143 INFO L225 Difference]: With dead ends: 130 [2020-09-25 11:24:42,143 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 11:24:42,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:24:42,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 11:24:42,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2020-09-25 11:24:42,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-09-25 11:24:42,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2020-09-25 11:24:42,169 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 49 [2020-09-25 11:24:42,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:42,169 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2020-09-25 11:24:42,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:24:42,171 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2020-09-25 11:24:42,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 11:24:42,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:42,181 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:42,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:24:42,181 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:42,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:42,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1519048418, now seen corresponding path program 1 times [2020-09-25 11:24:42,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:42,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867534198] [2020-09-25 11:24:42,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:42,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:42,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:42,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:43,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:43,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:24:43,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:24:43,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1196 [2020-09-25 11:24:43,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:43,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:24:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:24:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 11:24:43,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:43,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:43,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:43,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:43,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:24:43,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:43,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:24:43,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:43,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:43,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:43,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:43,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:43,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:43,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 11:24:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:43,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:43,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:43,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:43,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:43,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:24:43,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:24:43,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:43,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:43,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:43,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:43,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:43,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:43,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 11:24:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:43,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:43,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:43,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:43,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:43,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:24:43,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:43,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:43,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:43,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:43,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:43,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:43,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 11:24:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:43,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:43,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:43,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:43,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:43,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:24:43,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:43,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:43,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:43,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 11:24:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:43,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:43,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:43,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:43,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:43,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:24:43,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:43,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:43,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:43,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:43,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:43,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 11:24:43,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867534198] [2020-09-25 11:24:43,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:24:43,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 11:24:43,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701937607] [2020-09-25 11:24:43,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:24:43,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:43,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:24:43,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:24:43,542 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand 9 states. [2020-09-25 11:24:43,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:43,765 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2020-09-25 11:24:43,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:24:43,765 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-09-25 11:24:43,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:43,769 INFO L225 Difference]: With dead ends: 135 [2020-09-25 11:24:43,769 INFO L226 Difference]: Without dead ends: 133 [2020-09-25 11:24:43,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:24:43,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-25 11:24:43,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 126. [2020-09-25 11:24:43,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-25 11:24:43,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2020-09-25 11:24:43,785 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 58 [2020-09-25 11:24:43,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:43,786 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2020-09-25 11:24:43,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:24:43,787 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2020-09-25 11:24:43,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 11:24:43,788 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:43,788 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:43,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:24:43,789 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:43,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:43,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1733407875, now seen corresponding path program 1 times [2020-09-25 11:24:43,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:43,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938969246] [2020-09-25 11:24:43,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:43,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:43,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:43,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:45,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:45,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:24:45,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:24:45,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1253 [2020-09-25 11:24:45,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:45,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:45,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:24:45,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:24:45,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 11:24:45,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:45,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:45,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:45,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:45,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:24:45,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:45,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:24:45,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:45,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:45,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:45,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 11:24:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:45,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:45,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:45,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:45,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:45,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:24:45,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:24:45,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:45,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:45,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:45,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:45,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:45,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:45,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 11:24:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:45,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:45,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:45,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:45,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:45,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:24:45,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:45,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:45,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:45,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:24:45,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 11:24:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:45,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:45,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:45,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:45,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:45,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:24:45,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:45,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:45,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:45,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 11:24:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:45,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:45,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:45,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:45,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:45,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:24:45,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:45,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:45,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:45,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:45,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:45,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:45,225 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 11:24:45,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938969246] [2020-09-25 11:24:45,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:24:45,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 11:24:45,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074580401] [2020-09-25 11:24:45,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:24:45,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:45,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:24:45,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:24:45,228 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand 9 states. [2020-09-25 11:24:45,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:45,452 INFO L93 Difference]: Finished difference Result 158 states and 182 transitions. [2020-09-25 11:24:45,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:24:45,452 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-09-25 11:24:45,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:45,454 INFO L225 Difference]: With dead ends: 158 [2020-09-25 11:24:45,454 INFO L226 Difference]: Without dead ends: 156 [2020-09-25 11:24:45,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:24:45,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-09-25 11:24:45,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 147. [2020-09-25 11:24:45,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-09-25 11:24:45,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 169 transitions. [2020-09-25 11:24:45,474 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 169 transitions. Word has length 62 [2020-09-25 11:24:45,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:45,475 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 169 transitions. [2020-09-25 11:24:45,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:24:45,475 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 169 transitions. [2020-09-25 11:24:45,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 11:24:45,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:45,477 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:45,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:24:45,477 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:45,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:45,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1967257859, now seen corresponding path program 1 times [2020-09-25 11:24:45,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:45,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989728525] [2020-09-25 11:24:45,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:45,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:45,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:45,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:50,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:50,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 11:24:50,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:24:50,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:24:50,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:50,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:24:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:24:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 11:24:50,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:50,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:50,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:50,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:50,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:24:50,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:50,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:24:50,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:50,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:50,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:50,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:50,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:50,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:24:50,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 11:24:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:50,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:50,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:50,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:50,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:50,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:24:50,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:50,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:50,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:50,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:50,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:50,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:50,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 11:24:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:50,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:50,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:50,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:50,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:50,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:24:50,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:50,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:50,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:24:50,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:50,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:24:50,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:50,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 11:24:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:50,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:50,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:50,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:50,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:50,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:24:50,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:50,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:50,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:50,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 11:24:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:50,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:50,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:50,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:50,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:50,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:24:50,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:50,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:50,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:50,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:50,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:50,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:50,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 11:24:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:50,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:50,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:50,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:50,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:50,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:24:50,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:50,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:50,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:50,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:50,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:50,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:50,686 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 11:24:50,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989728525] [2020-09-25 11:24:50,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:24:50,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:24:50,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119295233] [2020-09-25 11:24:50,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:24:50,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:50,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:24:50,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:24:50,694 INFO L87 Difference]: Start difference. First operand 147 states and 169 transitions. Second operand 11 states. [2020-09-25 11:24:51,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:51,015 INFO L93 Difference]: Finished difference Result 157 states and 181 transitions. [2020-09-25 11:24:51,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:24:51,016 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-09-25 11:24:51,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:51,019 INFO L225 Difference]: With dead ends: 157 [2020-09-25 11:24:51,019 INFO L226 Difference]: Without dead ends: 152 [2020-09-25 11:24:51,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:24:51,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-25 11:24:51,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2020-09-25 11:24:51,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-25 11:24:51,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 174 transitions. [2020-09-25 11:24:51,033 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 174 transitions. Word has length 63 [2020-09-25 11:24:51,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:51,034 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 174 transitions. [2020-09-25 11:24:51,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:24:51,034 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 174 transitions. [2020-09-25 11:24:51,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 11:24:51,035 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:51,035 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:51,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 11:24:51,036 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:51,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:51,036 INFO L82 PathProgramCache]: Analyzing trace with hash -822659134, now seen corresponding path program 1 times [2020-09-25 11:24:51,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:51,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988355569] [2020-09-25 11:24:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:51,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:51,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:51,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:52,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:52,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 11:24:52,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:24:52,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1304 [2020-09-25 11:24:52,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:52,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:52,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:24:52,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:24:52,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 11:24:52,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:24:52,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:52,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:52,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:52,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:24:52,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:52,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:24:52,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:52,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:52,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:52,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:52,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:52,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 11:24:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:52,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:52,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:52,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:52,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:52,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:24:52,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:52,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:52,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:52,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:52,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:52,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:24:52,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 11:24:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:52,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:52,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:52,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:52,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:52,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:24:52,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:52,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:52,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:52,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:52,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:52,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:52,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 11:24:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:52,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:52,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:52,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:52,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:52,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:24:52,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:52,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:52,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:52,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:52,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:52,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:52,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 11:24:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:52,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:52,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:52,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:52,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:52,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:24:52,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:52,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:52,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:52,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:52,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:52,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:52,492 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 11:24:52,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988355569] [2020-09-25 11:24:52,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:24:52,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 11:24:52,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678752514] [2020-09-25 11:24:52,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:24:52,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:52,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:24:52,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:24:52,498 INFO L87 Difference]: Start difference. First operand 152 states and 174 transitions. Second operand 9 states. [2020-09-25 11:24:52,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:52,726 INFO L93 Difference]: Finished difference Result 187 states and 216 transitions. [2020-09-25 11:24:52,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:24:52,727 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-09-25 11:24:52,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:52,729 INFO L225 Difference]: With dead ends: 187 [2020-09-25 11:24:52,729 INFO L226 Difference]: Without dead ends: 185 [2020-09-25 11:24:52,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:24:52,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-25 11:24:52,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 177. [2020-09-25 11:24:52,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-25 11:24:52,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 205 transitions. [2020-09-25 11:24:52,748 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 205 transitions. Word has length 65 [2020-09-25 11:24:52,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:52,748 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 205 transitions. [2020-09-25 11:24:52,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:24:52,749 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 205 transitions. [2020-09-25 11:24:52,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 11:24:52,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:52,751 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 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] [2020-09-25 11:24:52,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 11:24:52,752 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:52,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:52,752 INFO L82 PathProgramCache]: Analyzing trace with hash 869213219, now seen corresponding path program 2 times [2020-09-25 11:24:52,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:52,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691269221] [2020-09-25 11:24:52,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:52,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:52,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:52,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:57,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:57,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 11:24:57,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:24:57,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4788 [2020-09-25 11:24:57,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:57,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:57,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:24:57,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:24:57,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 11:24:57,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:24:57,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:57,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:57,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:57,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:24:57,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:57,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:24:57,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:57,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:57,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:57,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:57,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:57,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:24:57,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 11:24:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:57,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:57,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:57,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:57,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:57,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:24:57,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:57,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:57,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:57,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:57,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:57,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:24:57,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 11:24:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:57,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:57,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:57,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:57,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:57,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:24:57,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:57,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:57,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:24:57,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:57,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:24:57,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:24:57,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 11:24:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:57,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:57,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:57,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:57,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:57,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:24:57,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:57,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:57,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:57,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:57,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:57,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:24:57,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 11:24:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:57,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:57,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:57,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:57,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:57,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:24:57,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:57,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:57,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:57,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:57,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 11:24:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:57,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:57,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:57,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:24:57,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:57,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:24:57,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:57,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:24:57,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:24:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 11:24:57,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691269221] [2020-09-25 11:24:57,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:24:57,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:24:57,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216344248] [2020-09-25 11:24:57,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:24:57,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:57,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:24:57,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:24:57,752 INFO L87 Difference]: Start difference. First operand 177 states and 205 transitions. Second operand 10 states. [2020-09-25 11:24:57,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:57,993 INFO L93 Difference]: Finished difference Result 184 states and 213 transitions. [2020-09-25 11:24:57,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:24:57,994 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-09-25 11:24:57,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:57,995 INFO L225 Difference]: With dead ends: 184 [2020-09-25 11:24:57,996 INFO L226 Difference]: Without dead ends: 179 [2020-09-25 11:24:57,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:24:57,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-09-25 11:24:58,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 176. [2020-09-25 11:24:58,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-25 11:24:58,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 201 transitions. [2020-09-25 11:24:58,016 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 201 transitions. Word has length 70 [2020-09-25 11:24:58,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:58,018 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 201 transitions. [2020-09-25 11:24:58,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:24:58,019 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 201 transitions. [2020-09-25 11:24:58,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 11:24:58,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:58,025 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:58,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 11:24:58,026 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:58,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:58,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1269119089, now seen corresponding path program 1 times [2020-09-25 11:24:58,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:58,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120887311] [2020-09-25 11:24:58,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:58,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:58,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:58,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:58,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:03,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:03,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 11:25:03,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:25:03,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:25:03,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:03,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:25:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:25:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 11:25:03,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:03,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:25:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:03,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:03,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:03,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:25:03,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:03,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:25:03,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:03,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:03,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:03,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:03,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:03,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:03,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 11:25:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:03,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:03,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:03,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:03,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:03,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:25:03,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:25:03,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:03,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:03,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:03,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:03,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:03,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:03,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 11:25:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:03,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:03,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:03,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:03,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:03,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:25:03,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:03,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:03,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:03,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 11:25:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:03,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:03,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:03,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:03,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:03,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:25:03,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:03,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:03,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:03,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:03,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:03,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:03,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 11:25:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:03,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:03,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:03,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:03,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:03,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:25:03,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:03,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:03,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:03,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 11:25:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:03,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:03,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:03,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:03,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:03,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:25:03,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:03,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:03,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:03,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:03,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:03,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:03,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 11:25:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:03,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:03,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:03,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:03,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:03,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:25:03,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:03,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:03,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:03,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:03,296 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 11:25:03,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120887311] [2020-09-25 11:25:03,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:25:03,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 11:25:03,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776178438] [2020-09-25 11:25:03,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:25:03,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:25:03,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:25:03,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:25:03,300 INFO L87 Difference]: Start difference. First operand 176 states and 201 transitions. Second operand 11 states. [2020-09-25 11:25:03,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:25:03,573 INFO L93 Difference]: Finished difference Result 195 states and 222 transitions. [2020-09-25 11:25:03,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:25:03,573 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-09-25 11:25:03,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:25:03,575 INFO L225 Difference]: With dead ends: 195 [2020-09-25 11:25:03,575 INFO L226 Difference]: Without dead ends: 193 [2020-09-25 11:25:03,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:25:03,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-25 11:25:03,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 176. [2020-09-25 11:25:03,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-25 11:25:03,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 201 transitions. [2020-09-25 11:25:03,590 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 201 transitions. Word has length 76 [2020-09-25 11:25:03,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:25:03,591 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 201 transitions. [2020-09-25 11:25:03,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:25:03,591 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 201 transitions. [2020-09-25 11:25:03,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 11:25:03,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:25:03,593 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:25:03,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 11:25:03,594 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:25:03,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:25:03,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1147260786, now seen corresponding path program 1 times [2020-09-25 11:25:03,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:25:03,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775494598] [2020-09-25 11:25:03,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:25:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:03,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:03,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:03,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:03,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:08,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:08,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 11:25:08,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:25:08,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:25:08,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:08,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:25:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:25:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 11:25:08,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:25:08,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:25:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:08,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:08,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:08,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:25:08,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:08,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:25:08,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:08,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:08,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:08,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:08,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:08,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:08,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 11:25:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:08,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:08,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:08,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:08,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:08,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:25:08,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:08,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:08,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:25:08,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 11:25:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:08,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:08,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:08,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:08,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:08,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:25:08,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:08,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:08,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:08,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:08,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:08,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:25:08,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 11:25:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:08,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:08,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:08,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:08,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:08,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:25:08,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:08,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:08,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:08,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:08,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:08,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:25:08,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 11:25:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:08,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:08,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:08,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:08,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:08,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:25:08,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:08,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:08,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:08,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:08,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:08,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:25:08,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 11:25:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:08,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:08,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:08,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:08,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:08,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:25:08,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:08,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:08,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:08,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:08,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:08,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:25:08,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 11:25:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:08,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:08,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:08,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:08,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:25:08,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:08,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:08,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:08,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:08,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:08,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:08,766 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 11:25:08,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775494598] [2020-09-25 11:25:08,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:25:08,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 11:25:08,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266757566] [2020-09-25 11:25:08,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:25:08,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:25:08,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:25:08,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:25:08,768 INFO L87 Difference]: Start difference. First operand 176 states and 201 transitions. Second operand 11 states. [2020-09-25 11:25:09,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:25:09,092 INFO L93 Difference]: Finished difference Result 218 states and 251 transitions. [2020-09-25 11:25:09,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:25:09,093 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-09-25 11:25:09,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:25:09,094 INFO L225 Difference]: With dead ends: 218 [2020-09-25 11:25:09,095 INFO L226 Difference]: Without dead ends: 150 [2020-09-25 11:25:09,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:25:09,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-25 11:25:09,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 146. [2020-09-25 11:25:09,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-25 11:25:09,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 163 transitions. [2020-09-25 11:25:09,104 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 163 transitions. Word has length 79 [2020-09-25 11:25:09,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:25:09,105 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 163 transitions. [2020-09-25 11:25:09,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:25:09,105 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 163 transitions. [2020-09-25 11:25:09,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 11:25:09,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:25:09,106 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:25:09,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 11:25:09,106 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:25:09,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:25:09,107 INFO L82 PathProgramCache]: Analyzing trace with hash 341113206, now seen corresponding path program 2 times [2020-09-25 11:25:09,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:25:09,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134160979] [2020-09-25 11:25:09,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:25:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:09,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:09,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:09,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:09,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:14,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:14,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 11:25:14,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:25:14,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:25:14,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:14,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:14,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:25:14,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:25:14,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 11:25:14,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:25:14,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:25:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:14,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:14,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:14,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:25:14,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:14,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:25:14,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:14,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:14,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:14,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:14,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:14,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:14,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 11:25:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:14,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:14,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:14,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:14,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:14,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:25:14,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:14,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:14,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:14,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:14,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:14,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:14,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 11:25:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:14,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:14,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:14,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:14,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:14,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:25:14,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:14,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:14,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:14,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:14,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:14,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:14,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 11:25:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:14,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:14,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:14,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:14,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:14,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:25:14,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:14,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:14,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:14,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:14,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:14,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:14,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 11:25:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:14,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:14,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:14,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:14,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:14,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:25:14,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:14,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:14,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:14,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:14,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:14,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:25:14,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 11:25:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:14,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:14,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:14,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:14,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:14,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:25:14,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:14,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:14,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:14,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:14,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:14,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:14,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 11:25:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:14,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:14,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:14,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:14,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:14,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:25:14,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:14,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:14,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:14,378 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 11:25:14,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134160979] [2020-09-25 11:25:14,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:25:14,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 11:25:14,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825128019] [2020-09-25 11:25:14,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:25:14,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:25:14,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:25:14,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:25:14,382 INFO L87 Difference]: Start difference. First operand 146 states and 163 transitions. Second operand 11 states. [2020-09-25 11:25:14,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:25:14,746 INFO L93 Difference]: Finished difference Result 193 states and 218 transitions. [2020-09-25 11:25:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:25:14,747 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-09-25 11:25:14,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:25:14,749 INFO L225 Difference]: With dead ends: 193 [2020-09-25 11:25:14,749 INFO L226 Difference]: Without dead ends: 124 [2020-09-25 11:25:14,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:25:14,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-25 11:25:14,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-09-25 11:25:14,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 11:25:14,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 136 transitions. [2020-09-25 11:25:14,765 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 136 transitions. Word has length 79 [2020-09-25 11:25:14,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:25:14,765 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 136 transitions. [2020-09-25 11:25:14,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:25:14,766 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 136 transitions. [2020-09-25 11:25:14,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 11:25:14,767 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:25:14,768 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:25:14,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 11:25:14,768 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:25:14,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:25:14,769 INFO L82 PathProgramCache]: Analyzing trace with hash -343631243, now seen corresponding path program 1 times [2020-09-25 11:25:14,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:25:14,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307444779] [2020-09-25 11:25:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:25:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:14,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:14,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:15,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:15,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:19,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:19,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 11:25:19,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:25:19,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 11:25:19,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:19,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:19,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:25:19,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:25:19,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 11:25:19,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:25:19,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:25:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:19,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:19,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:19,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:25:19,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:19,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:25:19,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:19,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:19,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:19,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:19,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:19,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:19,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 11:25:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:19,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:19,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:19,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:19,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:19,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:25:19,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:19,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:19,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:19,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:19,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:19,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:19,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 11:25:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:19,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:19,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:19,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:19,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:19,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:25:19,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:19,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:19,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:19,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:19,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:19,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:19,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 11:25:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:19,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:19,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:19,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:19,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:19,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:25:19,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:19,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:19,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:19,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:19,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:19,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 11:25:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:19,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:19,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:19,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:19,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:19,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:25:19,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:19,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:19,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:19,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:19,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:19,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:19,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 11:25:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:19,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:19,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:19,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:19,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:19,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:25:19,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:19,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:19,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:19,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:19,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:19,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 11:25:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:19,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:19,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:19,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:19,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:19,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:25:19,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:19,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:19,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:19,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:19,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:19,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:20,002 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 11:25:20,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307444779] [2020-09-25 11:25:20,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:25:20,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:25:20,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750765129] [2020-09-25 11:25:20,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:25:20,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:25:20,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:25:20,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:25:20,009 INFO L87 Difference]: Start difference. First operand 122 states and 136 transitions. Second operand 11 states. [2020-09-25 11:25:20,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:25:20,346 INFO L93 Difference]: Finished difference Result 199 states and 228 transitions. [2020-09-25 11:25:20,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:25:20,347 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-09-25 11:25:20,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:25:20,349 INFO L225 Difference]: With dead ends: 199 [2020-09-25 11:25:20,349 INFO L226 Difference]: Without dead ends: 195 [2020-09-25 11:25:20,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:25:20,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-09-25 11:25:20,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 184. [2020-09-25 11:25:20,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-09-25 11:25:20,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 209 transitions. [2020-09-25 11:25:20,365 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 209 transitions. Word has length 83 [2020-09-25 11:25:20,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:25:20,365 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 209 transitions. [2020-09-25 11:25:20,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:25:20,365 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 209 transitions. [2020-09-25 11:25:20,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-09-25 11:25:20,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:25:20,367 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:25:20,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 11:25:20,367 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:25:20,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:25:20,368 INFO L82 PathProgramCache]: Analyzing trace with hash 813915649, now seen corresponding path program 1 times [2020-09-25 11:25:20,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:25:20,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382933708] [2020-09-25 11:25:20,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:25:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:20,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:20,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:20,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:20,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:20,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking...