/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:39:40,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:39:40,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:39:40,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:39:40,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:39:40,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:39:40,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:39:40,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:39:40,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:39:40,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:39:40,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:39:40,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:39:40,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:39:40,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:39:40,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:39:40,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:39:40,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:39:40,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:39:40,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:39:40,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:39:40,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:39:40,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:39:40,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:39:40,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:39:40,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:39:40,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:39:40,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:39:40,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:39:40,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:39:40,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:39:40,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:39:40,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:39:40,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:39:40,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:39:40,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:39:40,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:39:40,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:39:40,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:39:40,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:39:40,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:39:40,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:39:40,552 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:39:40,599 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:39:40,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:39:40,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:39:40,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:39:40,601 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:39:40,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:39:40,601 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:39:40,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:39:40,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:39:40,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:39:40,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:39:40,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:39:40,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:39:40,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:39:40,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:39:40,603 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:39:40,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:39:40,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:39:40,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:39:40,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:39:40,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:39:40,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:39:40,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:39:40,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:39:40,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:39:40,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:39:40,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:39:40,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:39:40,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:39:40,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:39:41,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:39:41,087 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:39:41,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:39:41,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:39:41,093 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:39:41,094 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i [2020-09-25 13:39:41,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fda278fd0/9164ec3f7589414da18a49109c8c5444/FLAGc9f6d8906 [2020-09-25 13:39:41,771 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:39:41,772 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i [2020-09-25 13:39:41,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fda278fd0/9164ec3f7589414da18a49109c8c5444/FLAGc9f6d8906 [2020-09-25 13:39:42,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fda278fd0/9164ec3f7589414da18a49109c8c5444 [2020-09-25 13:39:42,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:39:42,180 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:39:42,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:39:42,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:39:42,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:39:42,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:39:42" (1/1) ... [2020-09-25 13:39:42,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25dd80d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:42, skipping insertion in model container [2020-09-25 13:39:42,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:39:42" (1/1) ... [2020-09-25 13:39:42,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:39:42,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:39:42,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:39:42,565 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:39:42,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:39:42,628 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:39:42,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:42 WrapperNode [2020-09-25 13:39:42,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:39:42,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:39:42,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:39:42,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:39:42,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:42" (1/1) ... [2020-09-25 13:39:42,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:42" (1/1) ... [2020-09-25 13:39:42,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:42" (1/1) ... [2020-09-25 13:39:42,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:42" (1/1) ... [2020-09-25 13:39:42,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:42" (1/1) ... [2020-09-25 13:39:42,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:42" (1/1) ... [2020-09-25 13:39:42,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:42" (1/1) ... [2020-09-25 13:39:42,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:39:42,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:39:42,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:39:42,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:39:42,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:39:42,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:39:42,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:39:42,837 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 13:39:42,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 13:39:42,838 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:39:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:39:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:39:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 13:39:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 13:39:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:39:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:39:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:39:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:39:43,215 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:39:43,216 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 13:39:43,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:39:43 BoogieIcfgContainer [2020-09-25 13:39:43,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:39:43,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:39:43,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:39:43,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:39:43,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:39:42" (1/3) ... [2020-09-25 13:39:43,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41861302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:39:43, skipping insertion in model container [2020-09-25 13:39:43,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:42" (2/3) ... [2020-09-25 13:39:43,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41861302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:39:43, skipping insertion in model container [2020-09-25 13:39:43,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:39:43" (3/3) ... [2020-09-25 13:39:43,232 INFO L109 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop.i [2020-09-25 13:39:43,243 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:39:43,254 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:39:43,276 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:39:43,305 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:39:43,305 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:39:43,305 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:39:43,305 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:39:43,305 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:39:43,305 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:39:43,305 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:39:43,305 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:39:43,329 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-25 13:39:43,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 13:39:43,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:43,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:39:43,338 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:43,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:43,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1441743938, now seen corresponding path program 1 times [2020-09-25 13:39:43,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:43,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259712208] [2020-09-25 13:39:43,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:43,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:43,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:43,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:39:43,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:43,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 13:39:43,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:43,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:43,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:39:43,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 13:39:43,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:43,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:39:43,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:43,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:43,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:43,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:43,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:43,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:39:43,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:43,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:43,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:43,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:43,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:43,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:39:43,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259712208] [2020-09-25 13:39:43,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:43,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:39:43,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976412660] [2020-09-25 13:39:43,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:39:43,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:43,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:39:43,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:39:43,869 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 5 states. [2020-09-25 13:39:44,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:44,077 INFO L93 Difference]: Finished difference Result 143 states and 210 transitions. [2020-09-25 13:39:44,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:39:44,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-25 13:39:44,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:44,093 INFO L225 Difference]: With dead ends: 143 [2020-09-25 13:39:44,094 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 13:39:44,100 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 13:39:44,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 13:39:44,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 73. [2020-09-25 13:39:44,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 13:39:44,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 91 transitions. [2020-09-25 13:39:44,164 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 91 transitions. Word has length 25 [2020-09-25 13:39:44,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:44,164 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 91 transitions. [2020-09-25 13:39:44,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:39:44,165 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 91 transitions. [2020-09-25 13:39:44,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 13:39:44,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:44,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:39:44,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:39:44,168 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:44,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:44,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1406858677, now seen corresponding path program 1 times [2020-09-25 13:39:44,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:44,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075257139] [2020-09-25 13:39:44,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:44,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:44,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:44,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:44,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:39:44,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:44,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 13:39:44,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:44,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:44,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:39:44,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 13:39:44,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:39:44,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:39:44,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:44,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:44,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:44,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:44,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:44,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:39:44,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:44,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:44,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:44,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:44,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:44,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:44,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:39:44,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075257139] [2020-09-25 13:39:44,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:44,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:39:44,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195843955] [2020-09-25 13:39:44,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:39:44,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:44,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:39:44,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:39:44,433 INFO L87 Difference]: Start difference. First operand 73 states and 91 transitions. Second operand 5 states. [2020-09-25 13:39:44,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:44,639 INFO L93 Difference]: Finished difference Result 85 states and 102 transitions. [2020-09-25 13:39:44,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:39:44,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-25 13:39:44,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:44,645 INFO L225 Difference]: With dead ends: 85 [2020-09-25 13:39:44,645 INFO L226 Difference]: Without dead ends: 83 [2020-09-25 13:39:44,648 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 13:39:44,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-25 13:39:44,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2020-09-25 13:39:44,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 13:39:44,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2020-09-25 13:39:44,663 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 25 [2020-09-25 13:39:44,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:44,664 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2020-09-25 13:39:44,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:39:44,664 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2020-09-25 13:39:44,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 13:39:44,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:44,666 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:39:44,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:39:44,666 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:44,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:44,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1771333938, now seen corresponding path program 1 times [2020-09-25 13:39:44,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:44,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070748929] [2020-09-25 13:39:44,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:44,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:44,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:44,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 13:39:44,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:44,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 13:39:44,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:44,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:44,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:39:44,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:39:44,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:39:44,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:44,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:44,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:44,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:44,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:44,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:44,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:39:44,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:44,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:44,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:44,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:44,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:44,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:44,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:39:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:44,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:44,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:44,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:44,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:44,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:39:44,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:44,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:44,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:44,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:44,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:44,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:44,904 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 13:39:44,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070748929] [2020-09-25 13:39:44,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:44,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:39:44,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735590938] [2020-09-25 13:39:44,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:39:44,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:44,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:39:44,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:39:44,906 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand 5 states. [2020-09-25 13:39:45,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:45,038 INFO L93 Difference]: Finished difference Result 116 states and 145 transitions. [2020-09-25 13:39:45,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:39:45,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-25 13:39:45,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:45,041 INFO L225 Difference]: With dead ends: 116 [2020-09-25 13:39:45,041 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 13:39:45,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:39:45,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 13:39:45,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 100. [2020-09-25 13:39:45,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-25 13:39:45,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 125 transitions. [2020-09-25 13:39:45,060 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 125 transitions. Word has length 30 [2020-09-25 13:39:45,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:45,061 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 125 transitions. [2020-09-25 13:39:45,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:39:45,061 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 125 transitions. [2020-09-25 13:39:45,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 13:39:45,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:45,063 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] [2020-09-25 13:39:45,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:39:45,063 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:45,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:45,064 INFO L82 PathProgramCache]: Analyzing trace with hash 456630219, now seen corresponding path program 1 times [2020-09-25 13:39:45,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:45,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506685169] [2020-09-25 13:39:45,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:45,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:45,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:45,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 13:39:45,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:45,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 13:39:45,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:45,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:45,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:39:45,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:39:45,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 13:39:45,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:45,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:45,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:45,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:45,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:45,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:45,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:39:45,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:45,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:45,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:45,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:45,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:45,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:45,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:39:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:45,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:45,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:45,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:45,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:45,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:39:45,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:45,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:45,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:45,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 13:39:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:45,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:45,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:45,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:45,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:45,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:39:45,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:45,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:45,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:45,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:45,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:45,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:45,350 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 13:39:45,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506685169] [2020-09-25 13:39:45,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:45,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:39:45,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172026430] [2020-09-25 13:39:45,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:39:45,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:45,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:39:45,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:39:45,354 INFO L87 Difference]: Start difference. First operand 100 states and 125 transitions. Second operand 6 states. [2020-09-25 13:39:45,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:45,529 INFO L93 Difference]: Finished difference Result 106 states and 130 transitions. [2020-09-25 13:39:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:39:45,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-25 13:39:45,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:45,532 INFO L225 Difference]: With dead ends: 106 [2020-09-25 13:39:45,532 INFO L226 Difference]: Without dead ends: 104 [2020-09-25 13:39:45,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:39:45,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-25 13:39:45,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-25 13:39:45,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-25 13:39:45,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2020-09-25 13:39:45,550 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 35 [2020-09-25 13:39:45,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:45,550 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2020-09-25 13:39:45,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:39:45,551 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2020-09-25 13:39:45,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 13:39:45,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:45,552 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] [2020-09-25 13:39:45,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:39:45,553 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:45,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:45,553 INFO L82 PathProgramCache]: Analyzing trace with hash 364478305, now seen corresponding path program 1 times [2020-09-25 13:39:45,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:45,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821414831] [2020-09-25 13:39:45,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:45,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:45,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:45,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:39:45,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:45,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 13:39:45,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:45,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:45,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:39:45,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 13:39:45,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:39:45,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:45,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:45,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:45,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:45,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:45,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:45,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:39:45,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:45,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:45,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:45,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:45,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:45,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:45,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:39:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:45,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:45,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:45,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:45,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:45,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:39:45,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:45,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:45,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:45,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:45,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:45,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:45,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 13:39:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:45,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:45,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:45,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:45,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:45,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:39:45,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:45,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:45,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:45,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:45,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:45,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:45,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-25 13:39:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:45,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:45,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:45,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:45,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:45,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:39:45,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:45,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:45,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:45,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:45,753 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 13:39:45,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821414831] [2020-09-25 13:39:45,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:45,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:39:45,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905731743] [2020-09-25 13:39:45,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:39:45,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:45,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:39:45,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:39:45,756 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. Second operand 5 states. [2020-09-25 13:39:45,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:45,861 INFO L93 Difference]: Finished difference Result 135 states and 172 transitions. [2020-09-25 13:39:45,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:39:45,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-09-25 13:39:45,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:45,864 INFO L225 Difference]: With dead ends: 135 [2020-09-25 13:39:45,865 INFO L226 Difference]: Without dead ends: 133 [2020-09-25 13:39:45,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:39:45,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-25 13:39:45,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 125. [2020-09-25 13:39:45,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-25 13:39:45,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 162 transitions. [2020-09-25 13:39:45,886 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 162 transitions. Word has length 40 [2020-09-25 13:39:45,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:45,887 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 162 transitions. [2020-09-25 13:39:45,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:39:45,887 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 162 transitions. [2020-09-25 13:39:45,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 13:39:45,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:45,890 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:39:45,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:39:45,891 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:45,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:45,892 INFO L82 PathProgramCache]: Analyzing trace with hash 914533499, now seen corresponding path program 1 times [2020-09-25 13:39:45,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:45,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569130031] [2020-09-25 13:39:45,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:45,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:45,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:46,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:46,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:46,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:47,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:47,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 13:39:47,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:39:47,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1532 [2020-09-25 13:39:47,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:47,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:47,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:39:47,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 13:39:47,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 13:39:47,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:47,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:47,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:47,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:47,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:47,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:47,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:39:47,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:47,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:47,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:47,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:47,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:47,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:47,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:39:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:47,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:47,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:47,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:47,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:47,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:47,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:47,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:47,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:47,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 13:39:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:47,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:47,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:47,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:47,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:47,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:39:47,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:47,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:47,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:47,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:47,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-25 13:39:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:47,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:47,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:47,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:47,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:47,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:39:47,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:47,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:47,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:47,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:47,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:47,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:47,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 13:39:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:47,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:47,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:47,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:47,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:47,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:39:47,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:47,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:47,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:47,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:47,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:47,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:47,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 13:39:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:47,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:47,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:47,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:47,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:47,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:39:47,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:47,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:39:47,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:47,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:39:47,601 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 13:39:47,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569130031] [2020-09-25 13:39:47,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:47,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:39:47,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899603214] [2020-09-25 13:39:47,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:39:47,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:47,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:39:47,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:39:47,605 INFO L87 Difference]: Start difference. First operand 125 states and 162 transitions. Second operand 5 states. [2020-09-25 13:39:47,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:47,709 INFO L93 Difference]: Finished difference Result 229 states and 302 transitions. [2020-09-25 13:39:47,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:39:47,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-09-25 13:39:47,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:47,713 INFO L225 Difference]: With dead ends: 229 [2020-09-25 13:39:47,713 INFO L226 Difference]: Without dead ends: 128 [2020-09-25 13:39:47,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:39:47,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-25 13:39:47,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-09-25 13:39:47,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-25 13:39:47,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 165 transitions. [2020-09-25 13:39:47,744 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 165 transitions. Word has length 58 [2020-09-25 13:39:47,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:47,744 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 165 transitions. [2020-09-25 13:39:47,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:39:47,745 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 165 transitions. [2020-09-25 13:39:47,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 13:39:47,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:47,746 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:39:47,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:39:47,747 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:47,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:47,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1807369608, now seen corresponding path program 1 times [2020-09-25 13:39:47,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:47,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110486218] [2020-09-25 13:39:47,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:47,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:47,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:48,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:39:48,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:48,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-09-25 13:39:48,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:48,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:48,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:39:48,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 13:39:48,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 13:39:48,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:39:48,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:48,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:48,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:48,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:48,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:39:48,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:48,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:48,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:48,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:48,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:48,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:48,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:39:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:48,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:48,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:48,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:48,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:39:48,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:48,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:48,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:48,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:48,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:48,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:48,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 13:39:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:48,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:48,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:48,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:48,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:39:48,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:48,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:48,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:48,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:48,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:48,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:48,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:39:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:48,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:48,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:48,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:48,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:39:48,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:48,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:48,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:48,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:48,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:48,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:48,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:39:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:48,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:48,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:48,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:39:48,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:48,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:48,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:48,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:48,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:48,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:48,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:39:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:48,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:48,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:48,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:48,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:39:48,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:48,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:48,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:48,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:48,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:48,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:39:48,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 13:39:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:48,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:48,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:48,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:48,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:39:48,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:48,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:48,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:48,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:48,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 13:39:48,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110486218] [2020-09-25 13:39:48,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:48,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:39:48,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279320422] [2020-09-25 13:39:48,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:39:48,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:48,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:39:48,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:39:48,347 INFO L87 Difference]: Start difference. First operand 128 states and 165 transitions. Second operand 7 states. [2020-09-25 13:39:48,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:48,557 INFO L93 Difference]: Finished difference Result 136 states and 172 transitions. [2020-09-25 13:39:48,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:39:48,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-09-25 13:39:48,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:48,560 INFO L225 Difference]: With dead ends: 136 [2020-09-25 13:39:48,560 INFO L226 Difference]: Without dead ends: 134 [2020-09-25 13:39:48,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 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 13:39:48,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-25 13:39:48,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2020-09-25 13:39:48,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-25 13:39:48,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 168 transitions. [2020-09-25 13:39:48,578 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 168 transitions. Word has length 64 [2020-09-25 13:39:48,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:48,579 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 168 transitions. [2020-09-25 13:39:48,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:39:48,579 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 168 transitions. [2020-09-25 13:39:48,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 13:39:48,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:48,581 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:39:48,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:39:48,581 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:48,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:48,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1715909932, now seen corresponding path program 1 times [2020-09-25 13:39:48,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:48,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808572094] [2020-09-25 13:39:48,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:48,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:49,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 13:39:49,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:39:49,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 792 [2020-09-25 13:39:49,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:49,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:39:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:39:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 13:39:49,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:49,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:49,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:49,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:49,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:49,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:39:49,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:49,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:49,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:49,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:49,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:49,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:49,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:39:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:49,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:49,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:49,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:49,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:49,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:49,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:49,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:49,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:49,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:49,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:49,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 13:39:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:49,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:49,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:49,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:49,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:39:49,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:49,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:49,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:49,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:49,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:49,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:39:49,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:39:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:49,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:49,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:49,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:49,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:39:49,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:49,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:49,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:49,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:49,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:49,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:49,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:39:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:49,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:49,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:49,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:49,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:39:49,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:49,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:49,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:49,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:49,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:49,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:39:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:49,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:49,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:49,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:49,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:39:49,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:49,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:49,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:49,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:49,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:49,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:49,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 13:39:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:49,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:49,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:49,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:49,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:49,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:49,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:49,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:49,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 13:39:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:49,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:49,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:49,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:49,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:39:49,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:49,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:49,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:49,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:49,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:49,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:49,576 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 13:39:49,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808572094] [2020-09-25 13:39:49,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:49,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:39:49,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785925147] [2020-09-25 13:39:49,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:39:49,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:49,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:39:49,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:39:49,579 INFO L87 Difference]: Start difference. First operand 132 states and 168 transitions. Second operand 7 states. [2020-09-25 13:39:49,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:49,782 INFO L93 Difference]: Finished difference Result 162 states and 205 transitions. [2020-09-25 13:39:49,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:39:49,783 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-09-25 13:39:49,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:49,785 INFO L225 Difference]: With dead ends: 162 [2020-09-25 13:39:49,785 INFO L226 Difference]: Without dead ends: 160 [2020-09-25 13:39:49,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 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 13:39:49,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-25 13:39:49,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 146. [2020-09-25 13:39:49,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-25 13:39:49,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 185 transitions. [2020-09-25 13:39:49,800 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 185 transitions. Word has length 69 [2020-09-25 13:39:49,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:49,801 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 185 transitions. [2020-09-25 13:39:49,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:39:49,801 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 185 transitions. [2020-09-25 13:39:49,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 13:39:49,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:49,803 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 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] [2020-09-25 13:39:49,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:39:49,803 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:49,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:49,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1298936315, now seen corresponding path program 1 times [2020-09-25 13:39:49,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:49,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793215307] [2020-09-25 13:39:49,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:49,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:50,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 13:39:50,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:39:50,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 786 [2020-09-25 13:39:50,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:50,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:50,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:39:50,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:39:50,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 13:39:50,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:50,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:50,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:50,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:50,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:50,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:39:50,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:50,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:50,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:50,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:50,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:50,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:50,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:39:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:50,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:50,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:50,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:50,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:50,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:50,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:50,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:50,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:50,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:50,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:50,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 13:39:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:50,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:50,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:50,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:50,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:50,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:50,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:50,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:50,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:50,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:50,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:50,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:39:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:50,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:50,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:50,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:50,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:39:50,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:50,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:50,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:50,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:50,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:50,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:50,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:39:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:50,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:50,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:50,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:50,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:39:50,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:50,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:50,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:50,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:50,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:50,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:50,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:39:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:50,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:50,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:50,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:50,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:39:50,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:50,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:50,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:50,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:50,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:50,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:39:50,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 13:39:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:50,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:50,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:50,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:50,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:39:50,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:50,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:50,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:50,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:50,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:50,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:50,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 13:39:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:50,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:50,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:50,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:50,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:39:50,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:50,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:50,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:50,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:50,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:50,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:50,792 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 13:39:50,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793215307] [2020-09-25 13:39:50,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:50,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:39:50,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13874922] [2020-09-25 13:39:50,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:39:50,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:50,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:39:50,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:39:50,794 INFO L87 Difference]: Start difference. First operand 146 states and 185 transitions. Second operand 7 states. [2020-09-25 13:39:51,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:51,023 INFO L93 Difference]: Finished difference Result 210 states and 280 transitions. [2020-09-25 13:39:51,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:39:51,024 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-09-25 13:39:51,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:51,027 INFO L225 Difference]: With dead ends: 210 [2020-09-25 13:39:51,028 INFO L226 Difference]: Without dead ends: 206 [2020-09-25 13:39:51,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 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 13:39:51,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-25 13:39:51,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 188. [2020-09-25 13:39:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-09-25 13:39:51,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 249 transitions. [2020-09-25 13:39:51,050 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 249 transitions. Word has length 71 [2020-09-25 13:39:51,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:51,053 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 249 transitions. [2020-09-25 13:39:51,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:39:51,053 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 249 transitions. [2020-09-25 13:39:51,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 13:39:51,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:51,055 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:39:51,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:39:51,055 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:51,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:51,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1528474552, now seen corresponding path program 1 times [2020-09-25 13:39:51,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:51,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524282401] [2020-09-25 13:39:51,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:51,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:51,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:51,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-25 13:39:51,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:51,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-25 13:39:51,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:51,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:51,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:39:51,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:39:51,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 13:39:51,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:39:51,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:51,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:51,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:51,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:51,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:51,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:39:51,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:51,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:51,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:51,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:51,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:39:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:51,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:51,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:51,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:51,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:51,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:51,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:51,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:51,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:51,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:51,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:51,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:39:51,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 13:39:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:51,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:51,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:51,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:51,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:51,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:51,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:51,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:51,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:51,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:51,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:51,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:39:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:51,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:51,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:51,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:51,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:51,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:51,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:51,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:51,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:51,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:51,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:51,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:51,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:39:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:51,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:51,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:51,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:51,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:51,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:39:51,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:51,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:51,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:51,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:51,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:51,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:51,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:39:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:51,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:51,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:51,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:51,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:51,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:39:51,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:51,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:51,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:51,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 13:39:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:51,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:51,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:51,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:51,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:51,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:51,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:51,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:51,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:51,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:51,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:51,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:51,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 13:39:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:51,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:51,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:51,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:51,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:51,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:51,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:51,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:51,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:51,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:51,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:51,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:51,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 13:39:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:51,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:51,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:51,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:51,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:51,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:51,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:51,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:51,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:51,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:51,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:51,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:51,541 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-25 13:39:51,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524282401] [2020-09-25 13:39:51,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:51,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:39:51,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410759964] [2020-09-25 13:39:51,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:39:51,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:51,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:39:51,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:39:51,544 INFO L87 Difference]: Start difference. First operand 188 states and 249 transitions. Second operand 8 states. [2020-09-25 13:39:51,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:51,819 INFO L93 Difference]: Finished difference Result 194 states and 254 transitions. [2020-09-25 13:39:51,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:39:51,820 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-09-25 13:39:51,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:51,827 INFO L225 Difference]: With dead ends: 194 [2020-09-25 13:39:51,828 INFO L226 Difference]: Without dead ends: 192 [2020-09-25 13:39:51,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:39:51,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-09-25 13:39:51,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-09-25 13:39:51,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-09-25 13:39:51,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 252 transitions. [2020-09-25 13:39:51,859 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 252 transitions. Word has length 74 [2020-09-25 13:39:51,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:51,859 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 252 transitions. [2020-09-25 13:39:51,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:39:51,859 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 252 transitions. [2020-09-25 13:39:51,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 13:39:51,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:51,863 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:39:51,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 13:39:51,864 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:51,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:51,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1530703596, now seen corresponding path program 1 times [2020-09-25 13:39:51,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:51,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971757089] [2020-09-25 13:39:51,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:51,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:51,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:52,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 13:39:52,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:52,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-09-25 13:39:52,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:52,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:52,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:39:52,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 13:39:52,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 13:39:52,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:52,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:52,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:52,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:52,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:52,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:39:52,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:52,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:52,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:52,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:52,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:52,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:52,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:39:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:52,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:52,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:52,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:52,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:39:52,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:52,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:52,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:52,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:52,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:52,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:52,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 13:39:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:52,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:52,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:52,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:52,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:39:52,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:52,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:52,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:52,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:52,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:52,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:52,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:39:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:52,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:52,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:52,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:52,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:39:52,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:52,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:52,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:52,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:52,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:39:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:52,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:52,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:52,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:52,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:52,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:52,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:52,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:52,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:52,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:52,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:52,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:39:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:52,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:52,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:52,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:52,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:39:52,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:52,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:52,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:52,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:52,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:52,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:52,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 13:39:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:52,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:52,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:52,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:52,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:39:52,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:52,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:52,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:52,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:52,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:52,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:52,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 13:39:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:52,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:52,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:52,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:52,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:52,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:52,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:52,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:52,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:52,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:52,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:52,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 13:39:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:52,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:52,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:52,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:52,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:39:52,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:52,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:52,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:52,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:52,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:52,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:52,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 13:39:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:52,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:52,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:52,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:52,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:52,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:52,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:52,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-09-25 13:39:52,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971757089] [2020-09-25 13:39:52,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:52,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:39:52,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753211568] [2020-09-25 13:39:52,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:39:52,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:52,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:39:52,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:39:52,569 INFO L87 Difference]: Start difference. First operand 192 states and 252 transitions. Second operand 7 states. [2020-09-25 13:39:52,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:52,728 INFO L93 Difference]: Finished difference Result 220 states and 283 transitions. [2020-09-25 13:39:52,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:39:52,728 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-09-25 13:39:52,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:52,731 INFO L225 Difference]: With dead ends: 220 [2020-09-25 13:39:52,731 INFO L226 Difference]: Without dead ends: 218 [2020-09-25 13:39:52,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 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 13:39:52,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-25 13:39:52,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 206. [2020-09-25 13:39:52,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-09-25 13:39:52,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 269 transitions. [2020-09-25 13:39:52,755 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 269 transitions. Word has length 79 [2020-09-25 13:39:52,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:52,756 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 269 transitions. [2020-09-25 13:39:52,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:39:52,756 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 269 transitions. [2020-09-25 13:39:52,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 13:39:52,761 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:52,761 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 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] [2020-09-25 13:39:52,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 13:39:52,762 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:52,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:52,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1064000984, now seen corresponding path program 1 times [2020-09-25 13:39:52,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:52,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591892898] [2020-09-25 13:39:52,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:52,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 13:39:53,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:53,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-09-25 13:39:53,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:39:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 13:39:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 13:39:53,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:53,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:53,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:53,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:53,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:39:53,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:53,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:53,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:53,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:39:53,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:39:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:53,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:53,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:53,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:39:53,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:53,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:53,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:53,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:53,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 13:39:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:53,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:53,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:53,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:39:53,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:53,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:53,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:53,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:53,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:39:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:53,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:53,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:53,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:39:53,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:53,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:39:53,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:39:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:53,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:53,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:53,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:53,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:53,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:39:53,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:39:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:53,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:53,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:53,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:39:53,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:53,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:53,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:53,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:53,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 13:39:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:53,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:53,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:53,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:39:53,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:53,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:53,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:53,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:53,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 13:39:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:53,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:53,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:53,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:39:53,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:53,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:53,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:53,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:53,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 13:39:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:53,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:53,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:53,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:53,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:53,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:53,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:53,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:53,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 13:39:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:53,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:53,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:53,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:39:53,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:53,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:53,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:53,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-09-25 13:39:53,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591892898] [2020-09-25 13:39:53,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:53,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:39:53,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050978032] [2020-09-25 13:39:53,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:39:53,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:53,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:39:53,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:39:53,425 INFO L87 Difference]: Start difference. First operand 206 states and 269 transitions. Second operand 6 states. [2020-09-25 13:39:53,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:53,538 INFO L93 Difference]: Finished difference Result 244 states and 322 transitions. [2020-09-25 13:39:53,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:39:53,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-09-25 13:39:53,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:53,542 INFO L225 Difference]: With dead ends: 244 [2020-09-25 13:39:53,542 INFO L226 Difference]: Without dead ends: 238 [2020-09-25 13:39:53,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:39:53,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-25 13:39:53,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 230. [2020-09-25 13:39:53,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-25 13:39:53,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 302 transitions. [2020-09-25 13:39:53,572 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 302 transitions. Word has length 81 [2020-09-25 13:39:53,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:53,573 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 302 transitions. [2020-09-25 13:39:53,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:39:53,573 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 302 transitions. [2020-09-25 13:39:53,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 13:39:53,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:53,576 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:39:53,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 13:39:53,576 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:53,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:53,576 INFO L82 PathProgramCache]: Analyzing trace with hash -895183749, now seen corresponding path program 1 times [2020-09-25 13:39:53,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:53,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033026423] [2020-09-25 13:39:53,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:53,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 13:39:53,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:53,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-09-25 13:39:53,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:39:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:39:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 13:39:53,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:39:54,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:54,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:54,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:39:54,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:54,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:54,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:39:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:54,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:54,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:39:54,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:54,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:54,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 13:39:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:54,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:54,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:54,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:54,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:54,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:39:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:54,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:54,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:54,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:54,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:54,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:54,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:39:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:54,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:54,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:54,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:54,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:54,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:54,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:54,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:39:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:54,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:54,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:39:54,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:54,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:54,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 13:39:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:54,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:54,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:54,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:54,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:54,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:54,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:39:54,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 13:39:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:54,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:54,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:54,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:54,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:54,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:54,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:54,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 13:39:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:54,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:54,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:54,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:54,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:54,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 13:39:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:54,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:54,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:54,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:54,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:54,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:54,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:54,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 13:39:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:54,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:54,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:54,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:54,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:54,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:54,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:54,218 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-09-25 13:39:54,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033026423] [2020-09-25 13:39:54,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:54,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 13:39:54,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797615650] [2020-09-25 13:39:54,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:39:54,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:54,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:39:54,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:39:54,221 INFO L87 Difference]: Start difference. First operand 230 states and 302 transitions. Second operand 10 states. [2020-09-25 13:39:54,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:54,526 INFO L93 Difference]: Finished difference Result 236 states and 307 transitions. [2020-09-25 13:39:54,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:39:54,526 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-09-25 13:39:54,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:54,529 INFO L225 Difference]: With dead ends: 236 [2020-09-25 13:39:54,529 INFO L226 Difference]: Without dead ends: 234 [2020-09-25 13:39:54,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:39:54,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-09-25 13:39:54,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-09-25 13:39:54,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-25 13:39:54,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 305 transitions. [2020-09-25 13:39:54,561 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 305 transitions. Word has length 90 [2020-09-25 13:39:54,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:54,561 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 305 transitions. [2020-09-25 13:39:54,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:39:54,562 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 305 transitions. [2020-09-25 13:39:54,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-09-25 13:39:54,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:54,565 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:39:54,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 13:39:54,565 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:54,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:54,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1272604239, now seen corresponding path program 1 times [2020-09-25 13:39:54,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:54,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136717058] [2020-09-25 13:39:54,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 13:39:56,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:39:56,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1967 [2020-09-25 13:39:56,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:39:56,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 13:39:56,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 13:39:56,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:56,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:39:56,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:56,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:56,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:39:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:56,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:39:56,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:56,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:56,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 13:39:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:56,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:39:56,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:56,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:39:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:56,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:39:56,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:56,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:56,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:39:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:56,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:39:56,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:56,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:56,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:39:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:56,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:39:56,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:56,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:56,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 13:39:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:56,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:56,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:39:56,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:56,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 13:39:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:56,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:39:56,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:56,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:56,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:39:56,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 13:39:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:56,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:39:56,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:56,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:56,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 13:39:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:56,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:39:56,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:56,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:56,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 13:39:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:56,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:39:56,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:56,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:39:56,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 13:39:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:56,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:39:56,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:56,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:56,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-09-25 13:39:56,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136717058] [2020-09-25 13:39:56,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:56,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 13:39:56,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105173086] [2020-09-25 13:39:56,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:39:56,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:56,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:39:56,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:39:56,813 INFO L87 Difference]: Start difference. First operand 234 states and 305 transitions. Second operand 9 states. [2020-09-25 13:39:57,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:57,028 INFO L93 Difference]: Finished difference Result 262 states and 335 transitions. [2020-09-25 13:39:57,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:39:57,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-09-25 13:39:57,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:57,031 INFO L225 Difference]: With dead ends: 262 [2020-09-25 13:39:57,031 INFO L226 Difference]: Without dead ends: 260 [2020-09-25 13:39:57,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 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 13:39:57,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-09-25 13:39:57,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 246. [2020-09-25 13:39:57,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-09-25 13:39:57,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 318 transitions. [2020-09-25 13:39:57,051 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 318 transitions. Word has length 95 [2020-09-25 13:39:57,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:57,052 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 318 transitions. [2020-09-25 13:39:57,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:39:57,052 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 318 transitions. [2020-09-25 13:39:57,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-25 13:39:57,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:57,054 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 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, 1, 1, 1, 1] [2020-09-25 13:39:57,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 13:39:57,054 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:57,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:57,055 INFO L82 PathProgramCache]: Analyzing trace with hash -960498755, now seen corresponding path program 1 times [2020-09-25 13:39:57,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:57,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824417061] [2020-09-25 13:39:57,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:57,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:57,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:57,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:57,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:57,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 13:40:02,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:40:02,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:40:02,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:40:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:40:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 13:40:02,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:02,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:02,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:40:02,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:02,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:02,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:02,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:40:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:02,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:02,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:40:02,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:02,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:02,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:02,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 13:40:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:02,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:02,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:02,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:02,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:02,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:40:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:02,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:02,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:02,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:02,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:02,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:02,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:40:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:02,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:02,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:40:02,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:02,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:02,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:02,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:40:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:02,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:02,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:02,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:02,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:02,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:02,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 13:40:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:02,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:02,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:02,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:02,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:02,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:02,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 13:40:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:02,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:02,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:02,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:02,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:02,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:02,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 13:40:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:02,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:02,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:02,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:02,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:02,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:02,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 13:40:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:02,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:02,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:40:02,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:02,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:40:02,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 13:40:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:02,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:02,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:02,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:02,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:02,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:02,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-25 13:40:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:02,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:02,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:02,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:02,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:02,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:02,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 13:40:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:02,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:02,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:02,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:02,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 13:40:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:02,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:02,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:02,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:40:02,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:02,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:02,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:02,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:02,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:02,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:02,443 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-09-25 13:40:02,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824417061] [2020-09-25 13:40:02,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:02,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:40:02,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898797217] [2020-09-25 13:40:02,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:40:02,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:02,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:40:02,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:40:02,447 INFO L87 Difference]: Start difference. First operand 246 states and 318 transitions. Second operand 8 states. [2020-09-25 13:40:02,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:02,805 INFO L93 Difference]: Finished difference Result 293 states and 378 transitions. [2020-09-25 13:40:02,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:40:02,806 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 110 [2020-09-25 13:40:02,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:02,810 INFO L225 Difference]: With dead ends: 293 [2020-09-25 13:40:02,810 INFO L226 Difference]: Without dead ends: 291 [2020-09-25 13:40:02,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:40:02,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-09-25 13:40:02,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 270. [2020-09-25 13:40:02,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-09-25 13:40:02,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 349 transitions. [2020-09-25 13:40:02,857 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 349 transitions. Word has length 110 [2020-09-25 13:40:02,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:02,858 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 349 transitions. [2020-09-25 13:40:02,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:40:02,858 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 349 transitions. [2020-09-25 13:40:02,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-25 13:40:02,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:02,863 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:02,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 13:40:02,864 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:02,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:02,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1038471395, now seen corresponding path program 1 times [2020-09-25 13:40:02,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:02,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746334532] [2020-09-25 13:40:02,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:02,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:03,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:03,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:07,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:07,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 13:40:07,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:40:07,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:40:07,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:07,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:07,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:40:07,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:40:07,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 13:40:07,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:07,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:07,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:07,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:07,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:07,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:07,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:07,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:07,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:07,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:07,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:07,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:40:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:07,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:07,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:07,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:07,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:07,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:07,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:07,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:07,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:07,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:07,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:07,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 13:40:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:07,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:07,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:07,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:07,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:07,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:07,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:07,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:07,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:07,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:07,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:07,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:07,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:08,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:40:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:08,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:08,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:08,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:08,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:08,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:08,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:08,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:08,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:08,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:08,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:08,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:40:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:08,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:08,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:08,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:08,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:40:08,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:08,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:08,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:08,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:08,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:08,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:08,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:40:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:08,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:08,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:08,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:08,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:08,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:08,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:08,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:08,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:40:08,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 13:40:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:08,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:08,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:08,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:08,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:08,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:08,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:08,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:08,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:08,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 13:40:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:08,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:08,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:08,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:08,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:08,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:08,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:08,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:08,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:08,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:08,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:08,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 13:40:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:08,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:08,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:08,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:08,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:08,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:08,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:08,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:08,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:08,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:08,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:08,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 13:40:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:08,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:08,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:08,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:08,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:08,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:08,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:08,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:08,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:08,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:08,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:08,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 13:40:08,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:08,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:08,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:08,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:08,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:08,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:08,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:08,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:08,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:08,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 13:40:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:08,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:08,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:08,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:08,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:08,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:08,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:08,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:08,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:08,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:08,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:08,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-25 13:40:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:08,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:08,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:08,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:08,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:08,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:08,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:08,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:08,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 13:40:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:08,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:08,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:08,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:08,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:08,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:08,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:08,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:08,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:08,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:08,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:08,170 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-09-25 13:40:08,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746334532] [2020-09-25 13:40:08,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:08,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 13:40:08,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568039193] [2020-09-25 13:40:08,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:40:08,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:08,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:40:08,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:40:08,176 INFO L87 Difference]: Start difference. First operand 270 states and 349 transitions. Second operand 9 states. [2020-09-25 13:40:08,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:08,500 INFO L93 Difference]: Finished difference Result 372 states and 494 transitions. [2020-09-25 13:40:08,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:40:08,501 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 110 [2020-09-25 13:40:08,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:08,504 INFO L225 Difference]: With dead ends: 372 [2020-09-25 13:40:08,504 INFO L226 Difference]: Without dead ends: 368 [2020-09-25 13:40:08,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:40:08,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-09-25 13:40:08,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 345. [2020-09-25 13:40:08,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-09-25 13:40:08,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 458 transitions. [2020-09-25 13:40:08,540 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 458 transitions. Word has length 110 [2020-09-25 13:40:08,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:08,542 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 458 transitions. [2020-09-25 13:40:08,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:40:08,542 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 458 transitions. [2020-09-25 13:40:08,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 13:40:08,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:08,545 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:08,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 13:40:08,546 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:08,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:08,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1539222205, now seen corresponding path program 1 times [2020-09-25 13:40:08,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:08,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166326526] [2020-09-25 13:40:08,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:08,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:08,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:12,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 13:40:12,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:40:12,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3653 [2020-09-25 13:40:12,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:12,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:40:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 13:40:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 13:40:12,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:12,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:12,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:12,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:12,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:12,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:12,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:12,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:12,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:12,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:12,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:12,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:12,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:40:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:12,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:12,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:12,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:12,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:12,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:12,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:12,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:12,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:12,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:12,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 13:40:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:12,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:12,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:12,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:12,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:12,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:12,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:12,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:12,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:12,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:12,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:12,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:40:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:12,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:12,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:12,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:12,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:12,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:12,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:12,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:12,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:12,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:12,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:12,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:40:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:12,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:12,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:12,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:12,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:40:12,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:12,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:12,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:12,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:12,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:12,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:12,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:40:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:12,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:12,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:12,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:12,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:12,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:12,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:12,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:12,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:12,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:12,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:12,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 13:40:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:12,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:12,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:12,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:12,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:12,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:12,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:12,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:12,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:12,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:12,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:12,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 13:40:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:12,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:12,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:12,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:12,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:12,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:12,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:12,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:12,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 13:40:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:12,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:12,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:12,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:12,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:12,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:12,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:12,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:12,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:12,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:12,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:12,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 13:40:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:12,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:12,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:12,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:12,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:40:12,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:12,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:12,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:12,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:12,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 13:40:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:12,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:12,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:12,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:12,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:12,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:12,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:12,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:12,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:12,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:12,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:12,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-25 13:40:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:12,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:12,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:12,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:12,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:12,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:12,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:12,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:12,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:12,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:12,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:12,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 13:40:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:12,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:12,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:12,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:12,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:12,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:12,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:12,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:12,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:12,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:12,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 13:40:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:12,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:12,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:12,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:12,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:12,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:12,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:12,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:12,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:12,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-25 13:40:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:12,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:12,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:12,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:12,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:12,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:12,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:12,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:12,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:12,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:12,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:12,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-25 13:40:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:12,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:12,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:12,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:12,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:12,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:12,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:12,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:12,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:12,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:12,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:12,545 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-09-25 13:40:12,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166326526] [2020-09-25 13:40:12,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:12,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 13:40:12,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264151443] [2020-09-25 13:40:12,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:40:12,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:12,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:40:12,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:40:12,549 INFO L87 Difference]: Start difference. First operand 345 states and 458 transitions. Second operand 9 states. [2020-09-25 13:40:12,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:12,914 INFO L93 Difference]: Finished difference Result 379 states and 496 transitions. [2020-09-25 13:40:12,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:40:12,914 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 120 [2020-09-25 13:40:12,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:12,919 INFO L225 Difference]: With dead ends: 379 [2020-09-25 13:40:12,919 INFO L226 Difference]: Without dead ends: 377 [2020-09-25 13:40:12,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 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 13:40:12,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-09-25 13:40:12,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 359. [2020-09-25 13:40:12,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-09-25 13:40:12,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 475 transitions. [2020-09-25 13:40:12,964 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 475 transitions. Word has length 120 [2020-09-25 13:40:12,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:12,965 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 475 transitions. [2020-09-25 13:40:12,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:40:12,965 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 475 transitions. [2020-09-25 13:40:12,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 13:40:12,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:12,969 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:12,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 13:40:12,970 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:12,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:12,970 INFO L82 PathProgramCache]: Analyzing trace with hash 871752502, now seen corresponding path program 1 times [2020-09-25 13:40:12,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:12,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364244576] [2020-09-25 13:40:12,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:13,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:13,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:13,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:13,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:17,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:17,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 13:40:17,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:40:17,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:40:17,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:17,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:40:17,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 13:40:17,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 13:40:17,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:18,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:18,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:18,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:18,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:18,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:18,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:18,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:18,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:18,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:18,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:18,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:18,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:40:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:18,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:18,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:18,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:18,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:18,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:18,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:18,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:18,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:18,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:18,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:18,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 13:40:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:18,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:18,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:18,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:18,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:18,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:18,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:18,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:18,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:18,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:18,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:18,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:40:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:18,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:18,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:18,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:18,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:18,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:18,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:18,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:18,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:40:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:18,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:18,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:18,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:18,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:18,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:18,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:18,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:18,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:18,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:18,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:40:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:18,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:18,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:18,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:18,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:18,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:18,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:18,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:18,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 13:40:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:18,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:18,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:18,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:18,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:18,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:18,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:18,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:18,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:18,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:18,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:18,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 13:40:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:18,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:18,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:18,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:18,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:18,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:18,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:18,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:18,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:18,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:18,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 13:40:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:18,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:18,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:18,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:18,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:18,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:18,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:18,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:18,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:18,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:18,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:18,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 13:40:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:18,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:18,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:18,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:18,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:18,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:18,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:18,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:18,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:18,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:18,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:18,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 13:40:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:18,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:18,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:18,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:18,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:40:18,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:18,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:18,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:18,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 13:40:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:18,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:18,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:18,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:18,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:18,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:18,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:18,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:18,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-25 13:40:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:18,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:18,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:18,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:18,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:18,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:18,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:18,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:18,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:18,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:18,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:18,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 13:40:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:18,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:18,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:18,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:18,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:18,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:18,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:18,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:18,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:18,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:18,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-25 13:40:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:18,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:18,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:18,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:18,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:18,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:18,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:18,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:18,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:18,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-25 13:40:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:18,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:18,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:18,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:18,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:18,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:18,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:18,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:18,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:18,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:18,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:18,299 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-09-25 13:40:18,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364244576] [2020-09-25 13:40:18,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:18,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 13:40:18,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355482068] [2020-09-25 13:40:18,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:40:18,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:18,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:40:18,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:40:18,311 INFO L87 Difference]: Start difference. First operand 359 states and 475 transitions. Second operand 11 states. [2020-09-25 13:40:18,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:18,705 INFO L93 Difference]: Finished difference Result 424 states and 562 transitions. [2020-09-25 13:40:18,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:40:18,706 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 120 [2020-09-25 13:40:18,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:18,711 INFO L225 Difference]: With dead ends: 424 [2020-09-25 13:40:18,711 INFO L226 Difference]: Without dead ends: 418 [2020-09-25 13:40:18,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:40:18,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-09-25 13:40:18,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 398. [2020-09-25 13:40:18,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-09-25 13:40:18,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 529 transitions. [2020-09-25 13:40:18,753 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 529 transitions. Word has length 120 [2020-09-25 13:40:18,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:18,753 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 529 transitions. [2020-09-25 13:40:18,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:40:18,753 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 529 transitions. [2020-09-25 13:40:18,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 13:40:18,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:18,756 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:18,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 13:40:18,756 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:18,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:18,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1668448602, now seen corresponding path program 1 times [2020-09-25 13:40:18,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:18,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335625002] [2020-09-25 13:40:18,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:18,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:18,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:19,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:19,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 13:40:23,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:40:23,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:40:23,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:40:23,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 13:40:23,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 13:40:23,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:23,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:23,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:23,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:40:23,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:23,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:23,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:23,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:40:23,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:40:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:23,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:23,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:23,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:23,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:23,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:23,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:23,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 13:40:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:23,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:23,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:23,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:23,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:23,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:23,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:23,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:40:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:23,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:23,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:23,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:23,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:23,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:40:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:23,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:23,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:40:23,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:23,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:23,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:23,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:23,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:40:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:23,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:23,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:23,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:23,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:23,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:23,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:23,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 13:40:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:23,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:23,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:23,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:23,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:23,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:23,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:23,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 13:40:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:23,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:23,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:23,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:23,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:23,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 13:40:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:23,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:23,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:23,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:23,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:23,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:23,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:23,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 13:40:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:23,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:23,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:23,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:23,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:23,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 13:40:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:23,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:23,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:23,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:23,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:23,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-25 13:40:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:23,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:23,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:23,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:23,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:24,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 13:40:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:24,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:24,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:24,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:24,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:24,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:24,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:24,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:24,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:24,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:24,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:24,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 13:40:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:24,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:24,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:24,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:24,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:24,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:24,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:24,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:24,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:24,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:24,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:24,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-25 13:40:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:24,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:24,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:24,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:24,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:24,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:24,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:24,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:24,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:24,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:24,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:24,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-25 13:40:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:24,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:24,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:24,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:24,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:24,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:24,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:24,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:24,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:24,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-25 13:40:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:24,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:24,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:24,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:24,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:24,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:24,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:24,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:24,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:24,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:24,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:24,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 13:40:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:24,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:24,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:24,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:24,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:24,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:24,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:24,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:24,083 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-09-25 13:40:24,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335625002] [2020-09-25 13:40:24,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:24,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 13:40:24,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477807430] [2020-09-25 13:40:24,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:40:24,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:24,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:40:24,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:40:24,086 INFO L87 Difference]: Start difference. First operand 398 states and 529 transitions. Second operand 11 states. [2020-09-25 13:40:24,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:24,391 INFO L93 Difference]: Finished difference Result 432 states and 566 transitions. [2020-09-25 13:40:24,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:40:24,392 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-09-25 13:40:24,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:24,395 INFO L225 Difference]: With dead ends: 432 [2020-09-25 13:40:24,395 INFO L226 Difference]: Without dead ends: 430 [2020-09-25 13:40:24,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 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 13:40:24,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-09-25 13:40:24,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 410. [2020-09-25 13:40:24,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-09-25 13:40:24,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 542 transitions. [2020-09-25 13:40:24,430 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 542 transitions. Word has length 136 [2020-09-25 13:40:24,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:24,430 INFO L479 AbstractCegarLoop]: Abstraction has 410 states and 542 transitions. [2020-09-25 13:40:24,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:40:24,430 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 542 transitions. [2020-09-25 13:40:24,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 13:40:24,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:24,433 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:40:24,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 13:40:24,434 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:24,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:24,434 INFO L82 PathProgramCache]: Analyzing trace with hash 362381850, now seen corresponding path program 1 times [2020-09-25 13:40:24,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:24,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624002335] [2020-09-25 13:40:24,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:24,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:25,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:25,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking...