/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:02:40,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:02:40,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:02:41,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:02:41,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:02:41,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:02:41,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:02:41,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:02:41,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:02:41,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:02:41,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:02:41,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:02:41,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:02:41,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:02:41,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:02:41,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:02:41,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:02:41,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:02:41,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:02:41,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:02:41,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:02:41,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:02:41,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:02:41,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:02:41,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:02:41,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:02:41,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:02:41,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:02:41,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:02:41,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:02:41,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:02:41,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:02:41,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:02:41,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:02:41,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:02:41,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:02:41,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:02:41,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:02:41,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:02:41,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:02:41,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:02:41,061 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 08:02:41,106 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:02:41,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:02:41,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:02:41,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:02:41,108 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:02:41,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:02:41,109 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:02:41,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:02:41,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:02:41,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:02:41,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:02:41,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:02:41,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:02:41,110 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:02:41,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:02:41,110 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:02:41,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:02:41,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:02:41,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:02:41,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:02:41,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:02:41,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:02:41,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:02:41,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:02:41,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:02:41,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:02:41,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:02:41,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:02:41,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:02:41,114 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 08:02:41,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:02:41,596 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:02:41,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:02:41,603 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:02:41,605 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:02:41,606 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2020-09-25 08:02:41,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a246c4c66/9b9aa776cf2a4c70b58a97c5f0c9a2fc/FLAG802fa769a [2020-09-25 08:02:42,269 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:02:42,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2020-09-25 08:02:42,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a246c4c66/9b9aa776cf2a4c70b58a97c5f0c9a2fc/FLAG802fa769a [2020-09-25 08:02:42,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a246c4c66/9b9aa776cf2a4c70b58a97c5f0c9a2fc [2020-09-25 08:02:42,618 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:02:42,625 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:02:42,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:02:42,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:02:42,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:02:42,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:02:42" (1/1) ... [2020-09-25 08:02:42,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f7f464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:42, skipping insertion in model container [2020-09-25 08:02:42,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:02:42" (1/1) ... [2020-09-25 08:02:42,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:02:42,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:02:42,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:02:42,910 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:02:42,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:02:42,949 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:02:42,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:42 WrapperNode [2020-09-25 08:02:42,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:02:42,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:02:42,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:02:42,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:02:42,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:42" (1/1) ... [2020-09-25 08:02:42,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:42" (1/1) ... [2020-09-25 08:02:42,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:42" (1/1) ... [2020-09-25 08:02:42,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:42" (1/1) ... [2020-09-25 08:02:43,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:42" (1/1) ... [2020-09-25 08:02:43,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:42" (1/1) ... [2020-09-25 08:02:43,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:42" (1/1) ... [2020-09-25 08:02:43,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:02:43,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:02:43,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:02:43,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:02:43,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:42" (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 08:02:43,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:02:43,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:02:43,164 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 08:02:43,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 08:02:43,164 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:02:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:02:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 08:02:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 08:02:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 08:02:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:02:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:02:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:02:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:02:43,461 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:02:43,461 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 08:02:43,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:02:43 BoogieIcfgContainer [2020-09-25 08:02:43,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:02:43,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:02:43,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:02:43,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:02:43,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:02:42" (1/3) ... [2020-09-25 08:02:43,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16192c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:02:43, skipping insertion in model container [2020-09-25 08:02:43,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:42" (2/3) ... [2020-09-25 08:02:43,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16192c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:02:43, skipping insertion in model container [2020-09-25 08:02:43,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:02:43" (3/3) ... [2020-09-25 08:02:43,479 INFO L109 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2020-09-25 08:02:43,494 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:02:43,504 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:02:43,529 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:02:43,564 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:02:43,565 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:02:43,565 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:02:43,566 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:02:43,566 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:02:43,566 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:02:43,566 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:02:43,566 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:02:43,596 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-09-25 08:02:43,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 08:02:43,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:43,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:43,606 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:43,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:43,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1122321079, now seen corresponding path program 1 times [2020-09-25 08:02:43,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:43,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834854917] [2020-09-25 08:02:43,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:43,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:43,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:43,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:43,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:02:43,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:02:43,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 08:02:43,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:43,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:43,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:43,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 08:02:43,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:43,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-25 08:02:44,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:44,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:44,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:44,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:44,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:44,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:02:44,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:44,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:44,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:44,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:44,083 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 08:02:44,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834854917] [2020-09-25 08:02:44,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:02:44,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 08:02:44,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299512126] [2020-09-25 08:02:44,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 08:02:44,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:44,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 08:02:44,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 08:02:44,121 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2020-09-25 08:02:44,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:44,157 INFO L93 Difference]: Finished difference Result 91 states and 122 transitions. [2020-09-25 08:02:44,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 08:02:44,158 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2020-09-25 08:02:44,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:44,172 INFO L225 Difference]: With dead ends: 91 [2020-09-25 08:02:44,173 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 08:02:44,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 08:02:44,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 08:02:44,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-25 08:02:44,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 08:02:44,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-09-25 08:02:44,245 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 24 [2020-09-25 08:02:44,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:44,246 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-09-25 08:02:44,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 08:02:44,246 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-09-25 08:02:44,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 08:02:44,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:44,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:44,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:02:44,249 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:44,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:44,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1949391841, now seen corresponding path program 1 times [2020-09-25 08:02:44,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:44,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678177453] [2020-09-25 08:02:44,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:44,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:44,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:44,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 08:02:44,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:44,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 08:02:44,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:44,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:44,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:02:44,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 08:02:44,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:02:44,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 08:02:44,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:44,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:44,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:44,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:44,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:44,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:02:44,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:44,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:44,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:44,571 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 08:02:44,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678177453] [2020-09-25 08:02:44,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:02:44,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:02:44,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818230739] [2020-09-25 08:02:44,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:02:44,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:44,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:02:44,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:02:44,576 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 5 states. [2020-09-25 08:02:44,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:44,712 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2020-09-25 08:02:44,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:02:44,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-09-25 08:02:44,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:44,715 INFO L225 Difference]: With dead ends: 66 [2020-09-25 08:02:44,716 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 08:02:44,717 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 08:02:44,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 08:02:44,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-09-25 08:02:44,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 08:02:44,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-09-25 08:02:44,735 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 26 [2020-09-25 08:02:44,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:44,735 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-09-25 08:02:44,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:02:44,736 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-09-25 08:02:44,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 08:02:44,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:44,737 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:44,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:02:44,738 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:44,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:44,738 INFO L82 PathProgramCache]: Analyzing trace with hash -873076999, now seen corresponding path program 1 times [2020-09-25 08:02:44,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:44,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672698708] [2020-09-25 08:02:44,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:44,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:44,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:44,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 08:02:44,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:44,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 08:02:44,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:44,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:44,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:02:44,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:02:44,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:02:44,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:44,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:44,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:44,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:44,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:44,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:44,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:02:44,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:44,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:44,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:44,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:44,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 08:02:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:44,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:44,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:44,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:44,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:44,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 08:02:44,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:44,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:44,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:44,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:44,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:02:45,000 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 08:02:45,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672698708] [2020-09-25 08:02:45,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:02:45,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:02:45,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186458640] [2020-09-25 08:02:45,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:02:45,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:45,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:02:45,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:02:45,007 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 6 states. [2020-09-25 08:02:45,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:45,234 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2020-09-25 08:02:45,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:02:45,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-09-25 08:02:45,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:45,236 INFO L225 Difference]: With dead ends: 70 [2020-09-25 08:02:45,236 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 08:02:45,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:02:45,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 08:02:45,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2020-09-25 08:02:45,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 08:02:45,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2020-09-25 08:02:45,260 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 31 [2020-09-25 08:02:45,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:45,260 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2020-09-25 08:02:45,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:02:45,261 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2020-09-25 08:02:45,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 08:02:45,264 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:45,264 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:45,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:02:45,265 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:45,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:45,265 INFO L82 PathProgramCache]: Analyzing trace with hash 2057902492, now seen corresponding path program 1 times [2020-09-25 08:02:45,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:45,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457058309] [2020-09-25 08:02:45,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:45,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:45,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:45,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:45,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 08:02:45,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:02:45,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-09-25 08:02:45,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:45,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:45,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:02:45,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 08:02:45,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:02:45,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:45,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:45,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:45,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:45,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:45,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:45,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:02:45,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:45,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:45,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:45,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:45,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:45,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:45,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 08:02:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:45,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:45,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:45,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:45,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:45,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:02:45,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 08:02:45,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:45,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:45,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:45,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:45,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:45,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:45,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 08:02:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:45,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:45,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:45,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:45,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:45,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:02:45,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:45,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:45,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:45,723 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 08:02:45,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457058309] [2020-09-25 08:02:45,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:02:45,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 08:02:45,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692588930] [2020-09-25 08:02:45,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:02:45,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:45,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:02:45,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:02:45,730 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 7 states. [2020-09-25 08:02:45,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:45,869 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2020-09-25 08:02:45,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:02:45,870 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-09-25 08:02:45,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:45,873 INFO L225 Difference]: With dead ends: 77 [2020-09-25 08:02:45,873 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 08:02:45,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:02:45,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 08:02:45,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2020-09-25 08:02:45,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 08:02:45,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2020-09-25 08:02:45,903 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 39 [2020-09-25 08:02:45,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:45,903 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2020-09-25 08:02:45,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:02:45,904 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2020-09-25 08:02:45,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 08:02:45,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:45,908 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:45,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:02:45,908 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:45,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:45,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1847294180, now seen corresponding path program 1 times [2020-09-25 08:02:45,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:45,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839391716] [2020-09-25 08:02:45,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:45,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:46,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:46,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 08:02:46,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:46,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 08:02:46,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:46,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:46,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:02:46,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:02:46,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 08:02:46,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:02:46,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:46,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:46,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:46,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:46,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:46,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:02:46,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:46,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:46,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:46,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:46,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:46,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 08:02:46,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 08:02:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:46,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:46,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:46,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:46,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:46,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:02:46,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:46,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:46,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:46,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:46,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:46,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:02:46,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 08:02:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:46,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:46,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:46,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:46,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:46,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 08:02:46,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:46,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:46,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:02:46,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 08:02:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:46,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:46,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:46,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:46,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:46,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 08:02:46,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:46,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:46,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:46,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:02:46,314 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 08:02:46,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839391716] [2020-09-25 08:02:46,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:02:46,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 08:02:46,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967968954] [2020-09-25 08:02:46,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:02:46,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:46,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:02:46,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:02:46,318 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand 8 states. [2020-09-25 08:02:46,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:46,571 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2020-09-25 08:02:46,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 08:02:46,571 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-09-25 08:02:46,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:46,572 INFO L225 Difference]: With dead ends: 81 [2020-09-25 08:02:46,573 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 08:02:46,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 08:02:46,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 08:02:46,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-09-25 08:02:46,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 08:02:46,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2020-09-25 08:02:46,582 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 44 [2020-09-25 08:02:46,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:46,583 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2020-09-25 08:02:46,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:02:46,583 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2020-09-25 08:02:46,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 08:02:46,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:46,584 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:46,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:02:46,585 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:46,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:46,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1076854334, now seen corresponding path program 1 times [2020-09-25 08:02:46,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:46,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856319207] [2020-09-25 08:02:46,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:46,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:46,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:46,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 08:02:46,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:46,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 08:02:46,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:46,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:46,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:02:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 08:02:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 08:02:46,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:46,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:46,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:46,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:46,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:46,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:46,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:02:46,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:46,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:46,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:46,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 08:02:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:46,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:46,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:46,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:46,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:46,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:02:46,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:46,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:46,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:46,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:46,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:46,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:46,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:02:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:46,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:46,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:46,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:46,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:46,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:02:46,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:46,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:46,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:46,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:46,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:46,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:46,790 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 08:02:46,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856319207] [2020-09-25 08:02:46,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:02:46,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:02:46,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565479492] [2020-09-25 08:02:46,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:02:46,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:46,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:02:46,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:02:46,793 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand 6 states. [2020-09-25 08:02:46,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:46,851 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-09-25 08:02:46,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:02:46,852 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-09-25 08:02:46,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:46,855 INFO L225 Difference]: With dead ends: 67 [2020-09-25 08:02:46,855 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 08:02:46,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:02:46,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 08:02:46,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-25 08:02:46,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 08:02:46,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-09-25 08:02:46,865 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 43 [2020-09-25 08:02:46,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:46,865 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-09-25 08:02:46,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:02:46,866 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-09-25 08:02:46,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 08:02:46,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:46,867 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:46,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:02:46,867 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:46,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:46,868 INFO L82 PathProgramCache]: Analyzing trace with hash 146364602, now seen corresponding path program 1 times [2020-09-25 08:02:46,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:46,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004470547] [2020-09-25 08:02:46,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:46,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:46,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:46,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:47,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:47,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 08:02:47,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:02:47,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-09-25 08:02:47,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:47,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:47,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:02:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:02:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 08:02:47,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:47,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:47,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:47,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:47,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:47,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:47,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:02:47,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:47,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:47,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:47,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 08:02:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:47,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:47,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:47,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:47,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:47,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:47,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:47,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:47,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:47,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:02:47,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:02:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:47,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:47,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:47,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:47,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:47,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:02:47,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:47,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:47,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:47,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:47,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:47,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:47,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 08:02:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:47,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:47,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:47,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:47,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:47,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:47,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:47,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:47,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:47,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:47,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:47,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:47,679 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 08:02:47,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004470547] [2020-09-25 08:02:47,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:02:47,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 08:02:47,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704581746] [2020-09-25 08:02:47,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:02:47,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:47,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:02:47,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:02:47,682 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 9 states. [2020-09-25 08:02:47,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:47,950 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2020-09-25 08:02:47,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 08:02:47,950 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-09-25 08:02:47,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:47,952 INFO L225 Difference]: With dead ends: 98 [2020-09-25 08:02:47,952 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 08:02:47,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-09-25 08:02:47,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 08:02:47,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 77. [2020-09-25 08:02:47,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 08:02:47,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-09-25 08:02:47,963 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 48 [2020-09-25 08:02:47,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:47,963 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-09-25 08:02:47,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:02:47,964 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-09-25 08:02:47,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 08:02:47,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:47,965 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:47,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:02:47,965 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:47,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:47,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1943579560, now seen corresponding path program 1 times [2020-09-25 08:02:47,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:47,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855026462] [2020-09-25 08:02:47,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:47,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:48,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:48,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:48,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 08:02:48,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:02:48,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-09-25 08:02:48,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:48,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:48,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:02:48,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 08:02:48,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 08:02:48,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:48,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:48,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:48,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:48,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:48,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:48,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:02:48,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:48,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:48,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:48,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:48,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:48,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:48,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 08:02:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:48,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:48,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:48,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:48,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:48,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:02:48,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 08:02:48,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:48,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:48,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:48,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:02:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:48,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:48,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:48,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:48,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:48,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:02:48,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:48,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:48,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:48,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:48,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:48,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:48,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 08:02:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:48,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:48,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:48,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:48,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:48,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:02:48,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:48,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:48,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:48,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:48,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:48,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:48,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 08:02:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:48,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:48,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:48,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:48,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:48,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:48,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:48,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:48,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:48,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:48,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:48,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:48,465 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 08:02:48,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855026462] [2020-09-25 08:02:48,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:02:48,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 08:02:48,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421514627] [2020-09-25 08:02:48,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:02:48,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:48,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:02:48,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:02:48,469 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 7 states. [2020-09-25 08:02:48,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:48,579 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2020-09-25 08:02:48,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:02:48,580 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-09-25 08:02:48,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:48,582 INFO L225 Difference]: With dead ends: 83 [2020-09-25 08:02:48,582 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 08:02:48,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:02:48,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 08:02:48,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-25 08:02:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 08:02:48,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2020-09-25 08:02:48,604 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 56 [2020-09-25 08:02:48,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:48,604 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2020-09-25 08:02:48,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:02:48,604 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2020-09-25 08:02:48,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 08:02:48,605 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:48,606 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:48,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:02:48,606 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:48,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:48,607 INFO L82 PathProgramCache]: Analyzing trace with hash 903884048, now seen corresponding path program 1 times [2020-09-25 08:02:48,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:48,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517781002] [2020-09-25 08:02:48,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:48,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:48,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:48,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 08:02:48,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:48,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-25 08:02:48,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:48,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:48,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:02:48,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:02:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 08:02:48,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:48,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:48,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:48,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:48,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:48,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:48,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:02:48,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:48,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:48,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:48,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:48,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:48,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:48,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 08:02:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:48,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:48,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:48,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:48,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:48,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:02:48,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:48,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:48,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:48,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:48,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:48,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:02:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:48,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:48,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:48,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:48,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:48,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:48,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:48,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:48,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:48,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 08:02:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:48,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:48,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:48,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:48,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:48,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:02:48,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:48,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:48,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:48,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 08:02:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:48,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:48,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:48,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:48,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:48,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:48,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:48,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:48,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:48,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 08:02:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:48,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:48,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:48,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:48,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:48,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:02:48,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:48,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:48,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:48,987 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 08:02:48,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517781002] [2020-09-25 08:02:48,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:02:48,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 08:02:48,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952311925] [2020-09-25 08:02:48,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:02:48,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:48,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:02:48,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:02:48,990 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 8 states. [2020-09-25 08:02:49,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:49,213 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-09-25 08:02:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 08:02:49,214 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-09-25 08:02:49,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:49,215 INFO L225 Difference]: With dead ends: 100 [2020-09-25 08:02:49,215 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 08:02:49,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:02:49,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 08:02:49,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2020-09-25 08:02:49,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 08:02:49,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2020-09-25 08:02:49,234 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 61 [2020-09-25 08:02:49,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:49,235 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2020-09-25 08:02:49,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:02:49,236 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2020-09-25 08:02:49,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 08:02:49,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:49,241 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:49,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:02:49,241 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:49,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:49,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1662212275, now seen corresponding path program 1 times [2020-09-25 08:02:49,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:49,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993484908] [2020-09-25 08:02:49,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:49,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:49,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:49,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:51,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:51,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 08:02:51,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:02:51,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2002 [2020-09-25 08:02:51,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:51,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:51,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:02:51,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 08:02:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 08:02:51,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:51,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:51,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:51,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:51,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:51,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:51,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:02:51,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:51,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:51,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:51,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:51,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:51,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:51,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 08:02:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:51,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:51,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:51,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:51,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:51,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:02:51,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:02:51,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:51,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:51,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:51,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:51,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:51,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:51,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:02:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:51,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:51,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:51,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:51,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:51,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:51,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:51,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:51,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:51,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:51,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:51,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:51,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 08:02:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:51,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:51,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:51,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:51,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:51,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:51,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:51,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:51,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:51,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:51,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:51,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:51,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 08:02:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:51,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:51,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:51,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:51,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:51,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:02:51,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:51,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:51,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:51,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:51,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 08:02:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:51,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:51,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:51,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:51,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:51,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:51,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:51,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:51,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:51,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:51,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:51,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:51,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 08:02:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:51,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:51,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:51,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:51,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:51,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:51,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:51,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:51,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:51,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:51,441 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 08:02:51,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993484908] [2020-09-25 08:02:51,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:02:51,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 08:02:51,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646559417] [2020-09-25 08:02:51,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:02:51,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:51,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:02:51,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:02:51,445 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand 9 states. [2020-09-25 08:02:51,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:51,599 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2020-09-25 08:02:51,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:02:51,599 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 08:02:51,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:51,601 INFO L225 Difference]: With dead ends: 100 [2020-09-25 08:02:51,601 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 08:02:51,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 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 08:02:51,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 08:02:51,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-25 08:02:51,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 08:02:51,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2020-09-25 08:02:51,619 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 69 [2020-09-25 08:02:51,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:51,620 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2020-09-25 08:02:51,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:02:51,620 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2020-09-25 08:02:51,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 08:02:51,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:51,622 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:51,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:02:51,623 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:51,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:51,623 INFO L82 PathProgramCache]: Analyzing trace with hash 71900773, now seen corresponding path program 1 times [2020-09-25 08:02:51,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:51,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148414914] [2020-09-25 08:02:51,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:51,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:51,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:53,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:53,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 08:02:53,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:02:53,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1464 [2020-09-25 08:02:53,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:53,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:02:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:02:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 08:02:53,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:53,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:53,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:53,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:53,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:53,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:53,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:02:53,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:53,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:53,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:53,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:53,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:53,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:53,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 08:02:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:53,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:53,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:53,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:53,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:53,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:02:53,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:53,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:53,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:53,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:53,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:53,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:53,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:02:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:53,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:53,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:53,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:53,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:53,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:02:53,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:53,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:53,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:53,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:53,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:53,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:53,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 08:02:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:53,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:53,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:53,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:53,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:53,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:53,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:53,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:53,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:53,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 08:02:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:53,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:53,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:53,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:53,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:53,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:53,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:53,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:53,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:53,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:53,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:53,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:53,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 08:02:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:53,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:53,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:53,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:53,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:53,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:53,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:53,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:53,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:53,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 08:02:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:53,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:53,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:53,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:53,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:53,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 08:02:53,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:53,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:53,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:53,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:53,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:53,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:53,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 08:02:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:53,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:53,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:53,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:53,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:53,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:02:53,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:53,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:53,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 08:02:53,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148414914] [2020-09-25 08:02:53,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:02:53,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 08:02:53,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963498624] [2020-09-25 08:02:53,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 08:02:53,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:53,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 08:02:53,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:02:53,443 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 12 states. [2020-09-25 08:02:53,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:53,736 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2020-09-25 08:02:53,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:02:53,737 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-09-25 08:02:53,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:53,738 INFO L225 Difference]: With dead ends: 111 [2020-09-25 08:02:53,739 INFO L226 Difference]: Without dead ends: 97 [2020-09-25 08:02:53,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 08:02:53,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-25 08:02:53,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-09-25 08:02:53,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-25 08:02:53,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2020-09-25 08:02:53,750 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 74 [2020-09-25 08:02:53,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:53,751 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2020-09-25 08:02:53,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 08:02:53,751 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2020-09-25 08:02:53,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 08:02:53,758 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:53,758 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:53,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 08:02:53,759 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:53,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:53,759 INFO L82 PathProgramCache]: Analyzing trace with hash -50388093, now seen corresponding path program 1 times [2020-09-25 08:02:53,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:53,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615637212] [2020-09-25 08:02:53,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:53,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:53,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:54,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:54,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:55,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 08:02:55,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:02:55,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1811 [2020-09-25 08:02:55,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:55,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:55,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:02:55,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:02:55,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 08:02:55,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:55,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:55,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:55,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:55,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:55,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:02:55,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:55,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:55,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:55,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:55,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:55,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:55,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 08:02:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:55,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:55,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:55,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:55,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:55,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:55,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:55,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:55,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:02:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:55,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:55,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:55,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:55,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:55,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:55,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:55,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:55,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:55,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:55,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:55,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 08:02:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:55,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:55,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:55,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:55,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:02:55,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:55,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:55,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:55,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:55,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:55,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:55,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 08:02:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:55,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:55,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:55,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:55,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:02:55,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:55,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:55,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:55,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:55,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:55,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:55,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 08:02:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:55,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:55,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:55,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:55,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:02:55,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:55,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:55,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:55,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:55,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:55,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:55,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 08:02:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:55,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:55,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:55,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:55,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:02:55,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:55,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:55,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:55,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:55,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 08:02:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:55,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:55,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:55,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:55,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 08:02:55,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:55,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:55,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 08:02:55,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615637212] [2020-09-25 08:02:55,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:02:55,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 08:02:55,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588641794] [2020-09-25 08:02:55,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:02:55,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:55,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:02:55,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:02:55,865 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand 11 states. [2020-09-25 08:02:56,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:56,181 INFO L93 Difference]: Finished difference Result 128 states and 143 transitions. [2020-09-25 08:02:56,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 08:02:56,181 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-09-25 08:02:56,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:56,183 INFO L225 Difference]: With dead ends: 128 [2020-09-25 08:02:56,183 INFO L226 Difference]: Without dead ends: 126 [2020-09-25 08:02:56,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-09-25 08:02:56,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-25 08:02:56,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 107. [2020-09-25 08:02:56,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-25 08:02:56,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2020-09-25 08:02:56,192 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 78 [2020-09-25 08:02:56,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:56,193 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2020-09-25 08:02:56,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:02:56,193 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2020-09-25 08:02:56,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 08:02:56,194 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:56,194 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:56,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 08:02:56,195 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:56,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:56,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1911943399, now seen corresponding path program 2 times [2020-09-25 08:02:56,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:56,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379628176] [2020-09-25 08:02:56,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:56,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:56,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:57,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 08:02:57,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:02:57,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1425 [2020-09-25 08:02:57,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:57,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:57,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:02:57,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:02:57,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 08:02:57,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:57,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:57,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:57,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:57,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:57,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:02:57,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:57,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:57,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:57,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:57,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 08:02:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:57,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:57,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:57,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:57,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:02:57,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:57,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:57,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:57,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:02:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:57,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:57,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:57,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:57,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:02:57,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:57,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:57,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:57,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:57,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 08:02:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:57,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:57,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:57,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:57,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:02:57,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:57,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:57,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:57,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:57,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 08:02:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:57,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:57,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:57,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:57,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:02:57,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:57,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:57,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:57,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:57,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:57,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 08:02:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:57,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:57,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:57,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:57,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:02:57,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:57,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:57,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:57,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:57,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:57,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:57,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 08:02:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:57,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:57,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:57,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:57,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:02:57,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:57,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:57,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:57,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:57,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:57,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:58,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 08:02:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:58,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:58,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:58,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:58,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:58,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:02:58,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:58,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:58,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:58,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:58,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:58,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:58,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 08:02:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:58,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:58,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:58,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:58,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:58,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:02:58,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:58,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:58,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:58,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:58,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:58,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:02:58,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-25 08:02:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:58,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:58,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:58,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:02:58,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:58,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:02:58,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:58,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:58,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:58,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:58,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:02:58,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-09-25 08:02:58,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379628176] [2020-09-25 08:02:58,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:02:58,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 08:02:58,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872977664] [2020-09-25 08:02:58,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 08:02:58,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:58,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 08:02:58,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:02:58,059 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand 12 states. [2020-09-25 08:02:58,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:58,373 INFO L93 Difference]: Finished difference Result 126 states and 139 transitions. [2020-09-25 08:02:58,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 08:02:58,374 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-09-25 08:02:58,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:58,375 INFO L225 Difference]: With dead ends: 126 [2020-09-25 08:02:58,375 INFO L226 Difference]: Without dead ends: 124 [2020-09-25 08:02:58,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-09-25 08:02:58,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-25 08:02:58,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2020-09-25 08:02:58,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-25 08:02:58,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 133 transitions. [2020-09-25 08:02:58,387 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 133 transitions. Word has length 91 [2020-09-25 08:02:58,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:58,387 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 133 transitions. [2020-09-25 08:02:58,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 08:02:58,388 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 133 transitions. [2020-09-25 08:02:58,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 08:02:58,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:58,389 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:58,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 08:02:58,390 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:58,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:58,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1949077486, now seen corresponding path program 2 times [2020-09-25 08:02:58,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:58,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181459732] [2020-09-25 08:02:58,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:58,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:58,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:58,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:03,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:03,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 08:03:03,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:03:03,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:03:03,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:03,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:03:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:03:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 08:03:03,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:03,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:03,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:03,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:03,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:03,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:03,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:03:03,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:03,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:03,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:03,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:03,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:03,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:03,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 08:03:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:03,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:03,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:03,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:03,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:03,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:03:03,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:03,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:03,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:03,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:03,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:03,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:03,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:03:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:03,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:03,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:03,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:03,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:03,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:03:03,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:03,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:03,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:03,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:03,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:03,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:03,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 08:03:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:03,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:03,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:03,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:03,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:03,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:03:03,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:03,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:03,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:03,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:03,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:03,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:03,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 08:03:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:03,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:03,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:03,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:03,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:03,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:03,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:03,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:03,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:03,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:03,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:03,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 08:03:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:03,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:03,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:03,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:03,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:03,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:03:03,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:03,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:03,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:03,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:03,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:03,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:03,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 08:03:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:03,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:03,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:03,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:03,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:03,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:03,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:03,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:03,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:03,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:03,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:03,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:03,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 08:03:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:03,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:03,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:03,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:03,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:03,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:03:03,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:03,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:03,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:03,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:03,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:03,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:03,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 08:03:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:03,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:03,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:03,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:03,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:03,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:03:03,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:03,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:03,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:03,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:03,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:03,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:03,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-25 08:03:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:03,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:03,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:03,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:03,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:03,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:03:03,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:03,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:03,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:03,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:03,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:03,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:03,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 08:03:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:03,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:03,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:03,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:03,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:03,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:03:03,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:03,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:03,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:03,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-25 08:03:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:03,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:03,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:03,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:03,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:03,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:03,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:03,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:03,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:03,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:03,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:03,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:03,888 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-09-25 08:03:03,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181459732] [2020-09-25 08:03:03,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:03,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 08:03:03,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274281967] [2020-09-25 08:03:03,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 08:03:03,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:03,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 08:03:03,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-25 08:03:03,891 INFO L87 Difference]: Start difference. First operand 120 states and 133 transitions. Second operand 15 states. [2020-09-25 08:03:04,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:04,372 INFO L93 Difference]: Finished difference Result 133 states and 146 transitions. [2020-09-25 08:03:04,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 08:03:04,372 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 104 [2020-09-25 08:03:04,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:04,373 INFO L225 Difference]: With dead ends: 133 [2020-09-25 08:03:04,374 INFO L226 Difference]: Without dead ends: 119 [2020-09-25 08:03:04,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-09-25 08:03:04,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-25 08:03:04,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2020-09-25 08:03:04,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-09-25 08:03:04,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 126 transitions. [2020-09-25 08:03:04,384 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 126 transitions. Word has length 104 [2020-09-25 08:03:04,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:04,384 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 126 transitions. [2020-09-25 08:03:04,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 08:03:04,385 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 126 transitions. [2020-09-25 08:03:04,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 08:03:04,386 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:04,386 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:03:04,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 08:03:04,386 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:04,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:04,387 INFO L82 PathProgramCache]: Analyzing trace with hash 55355532, now seen corresponding path program 2 times [2020-09-25 08:03:04,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:04,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776444120] [2020-09-25 08:03:04,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:04,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:04,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:04,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:04,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:06,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:09,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:09,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 08:03:09,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:03:09,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 08:03:09,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:09,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:03:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:03:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 08:03:09,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:09,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:09,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:09,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:09,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:09,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:09,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:03:09,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:09,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:09,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:09,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:09,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 08:03:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:09,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:09,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:09,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:09,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:09,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:09,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:09,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:09,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:09,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:09,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:09,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:09,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:03:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:09,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:09,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:09,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:09,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:09,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:03:09,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:09,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:09,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:09,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:09,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:09,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:09,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 08:03:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:09,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:09,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:09,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:09,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:09,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:09,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:09,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:09,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:09,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:09,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:09,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:09,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 08:03:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:09,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:09,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:09,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:09,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:09,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:03:09,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:09,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:09,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:09,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:09,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:09,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:09,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 08:03:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:09,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:09,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:09,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:09,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:09,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:09,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:09,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:09,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:09,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:09,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:09,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:09,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 08:03:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:09,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:09,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:09,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:09,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:09,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:09,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:09,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:09,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:09,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:09,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:09,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:09,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 08:03:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:09,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:09,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:09,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:09,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:09,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:03:09,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:09,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:09,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:09,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:09,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 08:03:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:09,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:09,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:09,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:09,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:09,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:09,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:09,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:09,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:09,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:09,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:09,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:09,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:03:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:09,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:09,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:09,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:09,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:09,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:03:09,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:09,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:09,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:09,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:09,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:09,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:09,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 08:03:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:09,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:09,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:09,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:09,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:09,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:03:09,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:09,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:09,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:09,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:03:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:09,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:09,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:09,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:09,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:09,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:09,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:09,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:09,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:09,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:09,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:09,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:09,876 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 22 proven. 42 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-09-25 08:03:09,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776444120] [2020-09-25 08:03:09,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:09,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 08:03:09,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474708440] [2020-09-25 08:03:09,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 08:03:09,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:09,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 08:03:09,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-09-25 08:03:09,878 INFO L87 Difference]: Start difference. First operand 117 states and 126 transitions. Second operand 16 states. [2020-09-25 08:03:10,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:10,521 INFO L93 Difference]: Finished difference Result 150 states and 167 transitions. [2020-09-25 08:03:10,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 08:03:10,522 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2020-09-25 08:03:10,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:10,524 INFO L225 Difference]: With dead ends: 150 [2020-09-25 08:03:10,524 INFO L226 Difference]: Without dead ends: 148 [2020-09-25 08:03:10,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=211, Invalid=719, Unknown=0, NotChecked=0, Total=930 [2020-09-25 08:03:10,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-09-25 08:03:10,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 129. [2020-09-25 08:03:10,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-09-25 08:03:10,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 139 transitions. [2020-09-25 08:03:10,547 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 139 transitions. Word has length 108 [2020-09-25 08:03:10,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:10,547 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 139 transitions. [2020-09-25 08:03:10,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 08:03:10,548 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 139 transitions. [2020-09-25 08:03:10,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 08:03:10,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:10,549 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:03:10,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 08:03:10,550 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:10,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:10,550 INFO L82 PathProgramCache]: Analyzing trace with hash -78339458, now seen corresponding path program 3 times [2020-09-25 08:03:10,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:10,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261060515] [2020-09-25 08:03:10,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:10,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:10,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:10,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:15,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:15,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 08:03:15,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:03:15,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:03:15,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:15,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:15,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:03:15,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:03:15,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 08:03:15,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:15,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:15,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:15,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:15,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:15,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:15,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:03:15,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:15,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:15,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:15,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:15,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:15,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 08:03:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:15,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:15,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:15,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:15,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:15,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:03:15,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:15,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:15,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:15,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:15,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:15,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:15,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:03:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:15,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:15,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:15,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:15,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:15,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:03:15,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:15,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:15,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:15,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:15,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:15,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:15,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 08:03:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:15,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:15,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:15,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:15,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:15,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:03:15,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:15,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:15,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:15,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:15,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 08:03:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:15,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:15,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:15,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:15,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:15,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 08:03:15,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:15,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:15,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:15,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:15,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:15,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:15,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 08:03:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:15,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:15,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:15,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:15,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:15,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:03:15,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:15,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:15,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:15,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:15,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:15,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:15,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 08:03:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:15,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:15,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:15,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:15,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:15,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:15,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:15,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:15,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:15,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:15,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:15,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:15,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 08:03:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:15,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:15,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:15,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:15,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:15,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 08:03:15,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:15,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:15,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:15,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:15,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:15,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:15,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 08:03:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:15,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:16,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:16,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:16,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:16,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:16,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:16,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:16,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:16,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:16,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:16,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:16,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:03:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:16,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:16,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:16,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:16,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:16,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:03:16,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:16,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:16,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:16,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:16,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:16,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:16,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 08:03:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:16,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:16,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:16,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:16,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:16,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:16,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:16,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:16,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:16,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:16,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:16,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:16,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:03:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:16,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:16,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:16,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:16,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:16,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:16,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:16,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:16,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:16,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:16,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:16,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:16,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 08:03:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:16,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:16,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:16,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:16,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:16,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:16,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:16,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:16,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:16,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:16,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:16,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:16,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 08:03:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:16,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:16,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:16,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:16,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:16,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:16,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:16,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:16,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:16,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:16,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:16,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 26 proven. 48 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-09-25 08:03:16,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261060515] [2020-09-25 08:03:16,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:16,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 08:03:16,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290020320] [2020-09-25 08:03:16,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 08:03:16,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:16,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 08:03:16,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-09-25 08:03:16,128 INFO L87 Difference]: Start difference. First operand 129 states and 139 transitions. Second operand 15 states. [2020-09-25 08:03:16,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:16,829 INFO L93 Difference]: Finished difference Result 156 states and 175 transitions. [2020-09-25 08:03:16,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 08:03:16,831 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 121 [2020-09-25 08:03:16,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:16,833 INFO L225 Difference]: With dead ends: 156 [2020-09-25 08:03:16,834 INFO L226 Difference]: Without dead ends: 154 [2020-09-25 08:03:16,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=194, Invalid=562, Unknown=0, NotChecked=0, Total=756 [2020-09-25 08:03:16,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-25 08:03:16,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 142. [2020-09-25 08:03:16,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-09-25 08:03:16,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 157 transitions. [2020-09-25 08:03:16,852 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 157 transitions. Word has length 121 [2020-09-25 08:03:16,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:16,852 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 157 transitions. [2020-09-25 08:03:16,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 08:03:16,852 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 157 transitions. [2020-09-25 08:03:16,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 08:03:16,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:16,857 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:03:16,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 08:03:16,857 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:16,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:16,857 INFO L82 PathProgramCache]: Analyzing trace with hash 633826231, now seen corresponding path program 3 times [2020-09-25 08:03:16,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:16,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753102167] [2020-09-25 08:03:16,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:16,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:17,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:17,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:21,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:21,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:21,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 08:03:21,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:03:21,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 08:03:21,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:21,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:03:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:03:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 08:03:21,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:22,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:22,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:22,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:22,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:22,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:22,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:03:22,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:22,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:22,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:22,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:22,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:22,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:22,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 08:03:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:22,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:22,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:22,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:22,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:22,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:03:22,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:22,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:22,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:22,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:03:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:22,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:22,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:22,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:22,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:22,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 08:03:22,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:22,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:22,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:22,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 08:03:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:22,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:22,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:22,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:22,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:22,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:03:22,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:22,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:22,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:22,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 08:03:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:22,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:22,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:22,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:22,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:22,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 08:03:22,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:22,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:22,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:22,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:22,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:22,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:22,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 08:03:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:22,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:22,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:22,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:22,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:22,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:22,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:22,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:22,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:22,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:22,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:22,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:22,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 08:03:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:22,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:22,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:22,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:22,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:22,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:03:22,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:22,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:22,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:22,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:22,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:22,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:22,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 08:03:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:22,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:22,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:22,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:22,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:22,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:22,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:22,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:22,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:22,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 08:03:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:22,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:22,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:22,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:22,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:22,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:03:22,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:22,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:22,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:22,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:22,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:22,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:22,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:03:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:22,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:22,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:22,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:22,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:22,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:22,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:22,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:22,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:22,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 08:03:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:22,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:22,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:22,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:22,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:22,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:03:22,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:22,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:22,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:03:22,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:03:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:22,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:22,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:22,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:22,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:22,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:03:22,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:22,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:22,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:22,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:22,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:22,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:22,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 08:03:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:22,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:22,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:22,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:22,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:22,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:03:22,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:22,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:22,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:22,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:22,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:22,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:22,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 08:03:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:22,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:22,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:22,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:22,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:22,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:22,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:22,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:22,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:22,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-25 08:03:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:22,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:22,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:22,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:22,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:22,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:22,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:22,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:22,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:22,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:22,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:22,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:22,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-25 08:03:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:22,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:22,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:22,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:22,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:22,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:22,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:22,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:22,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 30 proven. 48 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-09-25 08:03:22,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753102167] [2020-09-25 08:03:22,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:22,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 08:03:22,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420129541] [2020-09-25 08:03:22,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 08:03:22,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:22,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 08:03:22,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-09-25 08:03:22,657 INFO L87 Difference]: Start difference. First operand 142 states and 157 transitions. Second operand 18 states. [2020-09-25 08:03:23,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:23,157 INFO L93 Difference]: Finished difference Result 148 states and 162 transitions. [2020-09-25 08:03:23,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 08:03:23,157 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 134 [2020-09-25 08:03:23,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:23,158 INFO L225 Difference]: With dead ends: 148 [2020-09-25 08:03:23,159 INFO L226 Difference]: Without dead ends: 131 [2020-09-25 08:03:23,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2020-09-25 08:03:23,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-25 08:03:23,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 121. [2020-09-25 08:03:23,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-09-25 08:03:23,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2020-09-25 08:03:23,169 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 134 [2020-09-25 08:03:23,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:23,169 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2020-09-25 08:03:23,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 08:03:23,169 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2020-09-25 08:03:23,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 08:03:23,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:23,171 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:03:23,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 08:03:23,171 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:23,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:23,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1897035733, now seen corresponding path program 3 times [2020-09-25 08:03:23,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:23,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007257325] [2020-09-25 08:03:23,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:23,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:23,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:23,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:23,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:24,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:25,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:27,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:28,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:28,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 08:03:28,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:03:28,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:03:28,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:28,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:28,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 08:03:28,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:03:28,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 08:03:28,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:28,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:28,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:28,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:28,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:28,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:28,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:03:28,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:28,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:28,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:28,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:28,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:28,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:28,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 08:03:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:28,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:28,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:28,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:28,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:28,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:03:28,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:28,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:28,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:28,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:28,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:28,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:28,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:03:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:28,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:28,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:28,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:28,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:28,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:03:28,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:28,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:28,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:28,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:28,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:28,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:28,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 08:03:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:28,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:28,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:28,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:28,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:28,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:28,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:28,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:28,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:28,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:28,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:28,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:28,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 08:03:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:28,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:28,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:28,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:28,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:28,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:28,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:28,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:28,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:28,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:28,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:28,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:28,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 08:03:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:28,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:28,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:28,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:28,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:28,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:28,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:28,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:28,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:28,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:28,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 08:03:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:28,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:28,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:28,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:28,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:28,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:03:28,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:28,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:28,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:28,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:28,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:28,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:28,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 08:03:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:28,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:28,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:28,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:28,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:28,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:03:28,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:28,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:28,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:28,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:28,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:28,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:28,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 08:03:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:28,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:28,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:28,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:28,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:28,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:28,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:28,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:28,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:28,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:28,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:28,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:28,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:03:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:28,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:28,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:28,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:28,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:28,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:03:28,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:28,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:28,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:28,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:28,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:28,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:28,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 08:03:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:28,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:28,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:28,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:28,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:28,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:28,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:28,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:28,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:28,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:28,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:28,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:28,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:03:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:28,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:28,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:28,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:28,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:28,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:03:28,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:28,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:28,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:28,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:28,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:28,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:28,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 08:03:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:28,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:28,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:28,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:28,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:28,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:03:28,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:28,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:28,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:28,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:28,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:28,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:28,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-09-25 08:03:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:28,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:28,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:28,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:28,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:28,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:03:28,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:28,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:28,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:28,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:28,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:28,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:28,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-25 08:03:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:28,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:28,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:28,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:28,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:28,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:28,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:28,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:28,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:28,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:28,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-25 08:03:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:28,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:28,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:28,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:28,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:28,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:28,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:28,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:28,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:28,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:28,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:28,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:28,980 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 30 proven. 84 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-09-25 08:03:28,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007257325] [2020-09-25 08:03:28,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:28,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 08:03:28,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275790239] [2020-09-25 08:03:28,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 08:03:28,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:28,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 08:03:28,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2020-09-25 08:03:28,985 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand 21 states. [2020-09-25 08:03:30,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:30,004 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-09-25 08:03:30,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 08:03:30,004 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 138 [2020-09-25 08:03:30,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:30,006 INFO L225 Difference]: With dead ends: 152 [2020-09-25 08:03:30,007 INFO L226 Difference]: Without dead ends: 150 [2020-09-25 08:03:30,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=339, Invalid=1221, Unknown=0, NotChecked=0, Total=1560 [2020-09-25 08:03:30,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-25 08:03:30,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 139. [2020-09-25 08:03:30,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-09-25 08:03:30,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 147 transitions. [2020-09-25 08:03:30,022 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 147 transitions. Word has length 138 [2020-09-25 08:03:30,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:30,023 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 147 transitions. [2020-09-25 08:03:30,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 08:03:30,023 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 147 transitions. [2020-09-25 08:03:30,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 08:03:30,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:30,025 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:03:30,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 08:03:30,025 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:30,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:30,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1751458142, now seen corresponding path program 4 times [2020-09-25 08:03:30,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:30,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97469669] [2020-09-25 08:03:30,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:30,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:30,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:31,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:31,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:34,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:34,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:35,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:35,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-09-25 08:03:35,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:03:35,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-09-25 08:03:35,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:35,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 08:03:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 08:03:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-09-25 08:03:35,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0