/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=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:35:20,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:35:20,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:35:20,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:35:20,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:35:20,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:35:20,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:35:20,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:35:20,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:35:20,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:35:20,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:35:20,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:35:20,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:35:20,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:35:20,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:35:20,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:35:20,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:35:20,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:35:20,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:35:20,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:35:20,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:35:20,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:35:20,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:35:20,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:35:20,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:35:20,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:35:20,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:35:20,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:35:20,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:35:20,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:35:20,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:35:20,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:35:20,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:35:20,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:35:20,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:35:20,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:35:20,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:35:20,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:35:20,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:35:20,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:35:20,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:35:20,507 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 06:35:20,534 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:35:20,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:35:20,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:35:20,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:35:20,537 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:35:20,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:35:20,537 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:35:20,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:35:20,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:35:20,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:35:20,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:35:20,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:35:20,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:35:20,539 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:35:20,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:35:20,539 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:35:20,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:35:20,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:35:20,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:35:20,540 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:35:20,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:35:20,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:35:20,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:35:20,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:35:20,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:35:20,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:35:20,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:35:20,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:35:20,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:35:20,542 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:35:21,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:35:21,063 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:35:21,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:35:21,070 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:35:21,070 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:35:21,072 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c [2020-09-25 06:35:21,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14aeb6ec6/00a0059a2a884236bbf7055ab4e9a8e7/FLAGfc0c8038f [2020-09-25 06:35:21,705 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:35:21,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c [2020-09-25 06:35:21,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14aeb6ec6/00a0059a2a884236bbf7055ab4e9a8e7/FLAGfc0c8038f [2020-09-25 06:35:22,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14aeb6ec6/00a0059a2a884236bbf7055ab4e9a8e7 [2020-09-25 06:35:22,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:35:22,070 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:35:22,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:35:22,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:35:22,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:35:22,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:35:22" (1/1) ... [2020-09-25 06:35:22,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e64c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:22, skipping insertion in model container [2020-09-25 06:35:22,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:35:22" (1/1) ... [2020-09-25 06:35:22,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:35:22,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:35:22,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:35:22,412 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:35:22,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:35:22,445 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:35:22,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:22 WrapperNode [2020-09-25 06:35:22,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:35:22,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:35:22,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:35:22,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:35:22,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:22" (1/1) ... [2020-09-25 06:35:22,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:22" (1/1) ... [2020-09-25 06:35:22,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:22" (1/1) ... [2020-09-25 06:35:22,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:22" (1/1) ... [2020-09-25 06:35:22,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:22" (1/1) ... [2020-09-25 06:35:22,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:22" (1/1) ... [2020-09-25 06:35:22,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:22" (1/1) ... [2020-09-25 06:35:22,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:35:22,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:35:22,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:35:22,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:35:22,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:22" (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 06:35:22,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:35:22,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:35:22,634 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 06:35:22,634 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 06:35:22,635 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:35:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:35:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:35:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 06:35:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 06:35:22,636 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:35:22,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:35:22,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:35:22,893 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:35:22,894 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 06:35:22,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:35:22 BoogieIcfgContainer [2020-09-25 06:35:22,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:35:22,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:35:22,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:35:22,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:35:22,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:35:22" (1/3) ... [2020-09-25 06:35:22,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566da70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:35:22, skipping insertion in model container [2020-09-25 06:35:22,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:22" (2/3) ... [2020-09-25 06:35:22,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566da70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:35:22, skipping insertion in model container [2020-09-25 06:35:22,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:35:22" (3/3) ... [2020-09-25 06:35:22,928 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_15-1.c [2020-09-25 06:35:22,940 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:35:22,950 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:35:22,974 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:35:23,007 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:35:23,007 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:35:23,008 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:35:23,008 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:35:23,008 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:35:23,008 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:35:23,008 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:35:23,008 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:35:23,034 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 06:35:23,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 06:35:23,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:23,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:35:23,043 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:23,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:23,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 06:35:23,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:23,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160288658] [2020-09-25 06:35:23,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:23,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:23,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:23,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:23,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:35:23,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:35:23,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-25 06:35:23,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:23,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:35:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:23,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:35:23,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:23,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:23,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:23,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:23,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:23,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:35:23,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:23,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:23,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:23,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:23,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:23,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:23,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:23,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:23,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:23,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:23,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:23,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:35:23,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:23,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:23,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:35:23,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:23,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:35:23,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:23,527 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 06:35:23,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160288658] [2020-09-25 06:35:23,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:35:23,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:35:23,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378075764] [2020-09-25 06:35:23,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:35:23,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:23,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:35:23,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:35:23,560 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 06:35:23,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:23,658 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 06:35:23,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:35:23,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 06:35:23,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:23,676 INFO L225 Difference]: With dead ends: 58 [2020-09-25 06:35:23,676 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 06:35:23,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:35:23,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 06:35:23,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 06:35:23,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 06:35:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 06:35:23,741 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 06:35:23,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:23,741 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 06:35:23,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:35:23,742 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 06:35:23,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 06:35:23,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:23,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:35:23,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:35:23,744 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:23,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:23,745 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 06:35:23,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:23,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66142975] [2020-09-25 06:35:23,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:23,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:23,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:23,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:23,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 06:35:23,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:35:23,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 06:35:23,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:23,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:23,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:23,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:35:23,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:23,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:23,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:23,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:23,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:23,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:23,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:23,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:35:23,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:23,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:23,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:23,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:23,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:24,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:24,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:35:24,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:24,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 06:35:24,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:24,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:24,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:24,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:35:24,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:35:24,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:35:24,062 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 06:35:24,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66142975] [2020-09-25 06:35:24,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:35:24,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:35:24,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416715675] [2020-09-25 06:35:24,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:35:24,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:24,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:35:24,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:35:24,066 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 06:35:24,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:24,135 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 06:35:24,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:35:24,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 06:35:24,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:24,138 INFO L225 Difference]: With dead ends: 50 [2020-09-25 06:35:24,138 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 06:35:24,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 06:35:24,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 06:35:24,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 06:35:24,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 06:35:24,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 06:35:24,152 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 06:35:24,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:24,153 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 06:35:24,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:35:24,153 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 06:35:24,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 06:35:24,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:24,156 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:35:24,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:35:24,156 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:24,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:24,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 06:35:24,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:24,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396255209] [2020-09-25 06:35:24,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:24,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:24,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:24,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:24,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:26,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:26,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 06:35:26,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:35:26,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1996 [2020-09-25 06:35:26,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:26,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:35:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:35:26,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:26,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:26,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:26,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:26,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:26,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:26,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:35:26,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:26,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:26,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:26,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:26,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:26,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:35:26,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:26,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:26,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:26,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:26,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:35:26,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:35:26,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-09-25 06:35:26,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:26,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:26,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:35:26,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:26,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:35:26,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:26,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:26,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:26,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:26,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:26,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:26,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:35:26,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:26,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:26,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:35:26,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:26,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:35:26,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:26,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:35:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:26,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:26,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:26,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:26,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:26,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 06:35:26,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:26,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:26,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:26,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:26,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:35:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 06:35:26,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396255209] [2020-09-25 06:35:26,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:35:26,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:35:26,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729386737] [2020-09-25 06:35:26,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:35:26,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:26,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:35:26,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:35:26,761 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 8 states. [2020-09-25 06:35:26,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:26,893 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-09-25 06:35:26,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:35:26,896 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 06:35:26,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:26,898 INFO L225 Difference]: With dead ends: 63 [2020-09-25 06:35:26,899 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 06:35:26,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:35:26,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 06:35:26,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-09-25 06:35:26,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 06:35:26,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 06:35:26,918 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 06:35:26,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:26,921 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 06:35:26,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:35:26,922 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 06:35:26,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 06:35:26,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:26,925 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:35:26,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:35:26,926 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:26,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:26,926 INFO L82 PathProgramCache]: Analyzing trace with hash -159162515, now seen corresponding path program 1 times [2020-09-25 06:35:26,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:26,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480484149] [2020-09-25 06:35:26,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:26,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:26,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:27,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:27,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:27,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:27,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:30,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:30,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 06:35:30,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:35:30,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3247 [2020-09-25 06:35:30,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:30,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:30,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:30,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:35:30,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:35:30,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:30,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:30,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:30,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:30,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:30,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:30,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:35:30,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:30,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:30,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:30,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:30,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:30,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:30,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:30,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:30,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:30,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:30,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:31,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:31,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:35:31,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:35:31,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-09-25 06:35:31,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:31,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:31,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:35:31,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:31,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:35:31,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:31,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:31,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:31,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:31,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:31,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:31,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:35:31,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:31,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:31,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:35:31,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:31,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:35:31,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:31,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:35:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:31,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:31,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:31,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:35:31,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:31,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:35:31,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:31,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:31,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:31,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:31,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:35:31,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 06:35:31,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480484149] [2020-09-25 06:35:31,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:35:31,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:35:31,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326074486] [2020-09-25 06:35:31,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:35:31,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:31,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:35:31,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:35:31,252 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 06:35:31,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:31,405 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2020-09-25 06:35:31,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:35:31,406 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 06:35:31,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:31,408 INFO L225 Difference]: With dead ends: 69 [2020-09-25 06:35:31,408 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 06:35:31,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:35:31,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 06:35:31,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2020-09-25 06:35:31,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 06:35:31,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 06:35:31,420 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 34 [2020-09-25 06:35:31,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:31,421 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 06:35:31,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:35:31,421 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 06:35:31,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 06:35:31,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:31,423 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:35:31,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:35:31,424 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:31,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:31,424 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 2 times [2020-09-25 06:35:31,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:31,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279312749] [2020-09-25 06:35:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:31,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:31,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:31,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:32,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:32,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 06:35:32,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:35:32,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 853 [2020-09-25 06:35:32,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:32,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:32,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:32,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 06:35:32,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:35:32,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:32,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:32,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:32,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:32,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:32,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:32,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:35:32,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:32,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:32,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:32,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:32,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:32,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:32,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:32,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:32,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:32,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:35:32,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:32,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 06:35:32,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:32,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:32,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:35:32,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:32,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:35:32,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:32,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:32,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:32,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:32,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:35:32,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:32,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:35:32,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:32,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:32,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:35:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:32,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:32,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:35:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:32,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:32,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:32,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:32,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:32,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:35:32,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:32,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:32,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:32,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 06:35:32,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279312749] [2020-09-25 06:35:32,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:35:32,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:35:32,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750916359] [2020-09-25 06:35:32,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:35:32,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:32,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:35:32,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:35:32,479 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 9 states. [2020-09-25 06:35:32,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:32,572 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2020-09-25 06:35:32,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:35:32,573 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 06:35:32,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:32,575 INFO L225 Difference]: With dead ends: 71 [2020-09-25 06:35:32,575 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 06:35:32,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:35:32,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 06:35:32,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 54. [2020-09-25 06:35:32,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 06:35:32,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 06:35:32,587 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 34 [2020-09-25 06:35:32,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:32,588 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 06:35:32,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:35:32,588 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 06:35:32,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 06:35:32,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:32,590 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:35:32,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:35:32,591 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:32,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:32,591 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 06:35:32,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:32,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242607990] [2020-09-25 06:35:32,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:32,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:32,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:32,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:32,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:32,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:34,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:34,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 06:35:34,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:35:34,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1418 [2020-09-25 06:35:34,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:34,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:34,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:34,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 06:35:34,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:35:34,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:34,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:34,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:34,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:34,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:34,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:34,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:35:34,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:34,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:34,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:34,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:34,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:34,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:34,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:34,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:34,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:34,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:34,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:34,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:35:34,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:35:34,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-09-25 06:35:34,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:34,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:35:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:35:34,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:34,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:34,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:34,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:34,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:35:34,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:34,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:35:34,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:34,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:35:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:34,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:34,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:34,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:35:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:34,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:34,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:34,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:35:34,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:34,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:35:34,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:34,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:34,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:34,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:35:34,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:34,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 06:35:34,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242607990] [2020-09-25 06:35:34,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:35:34,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:35:34,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673212679] [2020-09-25 06:35:34,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:35:34,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:34,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:35:34,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:35:34,609 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 9 states. [2020-09-25 06:35:34,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:34,701 INFO L93 Difference]: Finished difference Result 75 states and 92 transitions. [2020-09-25 06:35:34,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:35:34,702 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 06:35:34,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:34,703 INFO L225 Difference]: With dead ends: 75 [2020-09-25 06:35:34,704 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 06:35:34,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:35:34,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 06:35:34,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2020-09-25 06:35:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 06:35:34,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 06:35:34,713 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 35 [2020-09-25 06:35:34,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:34,714 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 06:35:34,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:35:34,714 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 06:35:34,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 06:35:34,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:34,716 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:35:34,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:35:34,716 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:34,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:34,717 INFO L82 PathProgramCache]: Analyzing trace with hash -2066677686, now seen corresponding path program 1 times [2020-09-25 06:35:34,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:34,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291339018] [2020-09-25 06:35:34,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:34,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:34,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:34,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:34,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:35,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:35,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:37,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:39,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:39,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:35:39,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:35:39,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:35:39,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:39,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:39,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:39,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:35:39,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 06:35:39,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:39,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:39,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:39,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:39,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:39,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:39,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:35:39,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:39,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:39,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:39,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:39,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:39,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:39,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:39,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:39,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:39,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:40,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:40,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:40,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:41,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:41,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 06:35:41,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:35:41,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2165 [2020-09-25 06:35:41,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:41,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:35:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 06:35:41,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:41,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:41,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:41,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:41,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:41,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:41,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:35:41,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:41,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:41,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:35:41,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:41,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:41,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:41,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:35:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:41,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:41,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:42,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:42,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:35:42,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:35:42,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 06:35:42,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:42,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:42,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:35:42,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:42,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:35:42,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:42,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:42,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:42,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:42,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:42,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:42,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:35:42,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:42,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:42,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:35:42,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:42,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:35:42,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:42,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:35:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:42,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:42,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:42,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:42,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:42,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:35:42,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:42,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:35:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:42,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:42,113 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 06:35:42,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291339018] [2020-09-25 06:35:42,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:35:42,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:35:42,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264885150] [2020-09-25 06:35:42,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:35:42,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:42,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:35:42,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:35:42,117 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 8 states. [2020-09-25 06:35:42,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:42,299 INFO L93 Difference]: Finished difference Result 118 states and 159 transitions. [2020-09-25 06:35:42,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:35:42,301 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-09-25 06:35:42,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:42,302 INFO L225 Difference]: With dead ends: 118 [2020-09-25 06:35:42,302 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 06:35:42,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:35:42,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 06:35:42,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2020-09-25 06:35:42,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 06:35:42,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2020-09-25 06:35:42,322 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 50 [2020-09-25 06:35:42,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:42,325 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2020-09-25 06:35:42,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:35:42,325 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2020-09-25 06:35:42,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 06:35:42,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:42,328 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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] [2020-09-25 06:35:42,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:35:42,329 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:42,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:42,329 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 06:35:42,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:42,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514112272] [2020-09-25 06:35:42,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:42,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:42,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:42,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:42,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:42,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:42,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:43,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:43,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:44,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:44,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:46,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:46,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:46,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:47,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:47,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 06:35:47,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 06:35:47,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:35:47,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:47,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:35:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 06:35:47,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:47,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:47,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:47,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:47,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:47,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:47,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:35:47,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:47,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:47,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:47,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:47,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:47,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:47,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:47,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:47,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:47,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:47,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:47,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:47,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:48,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:49,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:49,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:51,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:51,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:51,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:52,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:52,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:52,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 06:35:52,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 06:35:52,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:35:52,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:52,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:35:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 06:35:52,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:52,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:52,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:52,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:52,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:52,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:35:52,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:35:52,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 06:35:52,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:52,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:52,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:35:52,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:52,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:35:52,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:52,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:52,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:52,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:52,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:35:52,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:52,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:35:52,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:52,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:52,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:35:52,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:52,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:35:52,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:52,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:35:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:52,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:52,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:52,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:52,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:52,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:35:52,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:52,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:35:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:52,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:52,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:35:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:52,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:52,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:52,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:35:52,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:52,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:35:52,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:52,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:52,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:35:52,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:52,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:35:52,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:52,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:52,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:52,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:52,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:35:52,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:52,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:35:52,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:52,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:52,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:52,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:52,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:52,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:52,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:35:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:52,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:52,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:52,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:52,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:52,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:35:52,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:52,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:52,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 06:35:52,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514112272] [2020-09-25 06:35:52,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:35:52,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:35:52,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469162610] [2020-09-25 06:35:52,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:35:52,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:52,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:35:52,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:35:52,729 INFO L87 Difference]: Start difference. First operand 64 states and 78 transitions. Second operand 8 states. [2020-09-25 06:35:52,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:52,882 INFO L93 Difference]: Finished difference Result 108 states and 142 transitions. [2020-09-25 06:35:52,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:35:52,882 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-09-25 06:35:52,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:52,885 INFO L225 Difference]: With dead ends: 108 [2020-09-25 06:35:52,885 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 06:35:52,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:35:52,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 06:35:52,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 90. [2020-09-25 06:35:52,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-25 06:35:52,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 118 transitions. [2020-09-25 06:35:52,909 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 118 transitions. Word has length 69 [2020-09-25 06:35:52,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:52,910 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 118 transitions. [2020-09-25 06:35:52,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:35:52,910 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 118 transitions. [2020-09-25 06:35:52,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 06:35:52,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:52,912 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 06:35:52,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:35:52,912 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:52,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:52,913 INFO L82 PathProgramCache]: Analyzing trace with hash 2120760888, now seen corresponding path program 2 times [2020-09-25 06:35:52,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:52,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318509412] [2020-09-25 06:35:52,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:52,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:52,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:52,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:53,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:53,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:53,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:53,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:53,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:53,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:53,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:55,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:55,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:55,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:57,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:57,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 06:35:57,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 06:35:57,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 06:35:57,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:57,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:35:57,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 06:35:57,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:57,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:57,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:57,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:57,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:57,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:57,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:35:57,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:57,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:57,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:57,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:57,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:57,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:57,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:58,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:58,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:58,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:58,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:58,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:58,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:00,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:00,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:00,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:00,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:01,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:01,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:01,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:01,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:02,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:02,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 06:36:02,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 06:36:02,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 06:36:02,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:02,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:02,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:02,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 06:36:02,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 06:36:02,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:02,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:02,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:02,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:03,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:03,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:03,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:03,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 06:36:03,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:03,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 648 [2020-09-25 06:36:03,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:03,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:03,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:03,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 06:36:03,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 06:36:03,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:03,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:03,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:03,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:03,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:03,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:03,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:03,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:03,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:03,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 06:36:03,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:03,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:03,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:03,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:03,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:36:03,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:03,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:03,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:03,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:03,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:03,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:03,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:36:03,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:03,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:03,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:03,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:03,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:03,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:03,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:03,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:03,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:03,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:03,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:03,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:36:03,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:03,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:03,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:03,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:03,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:03,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:36:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:03,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:03,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:03,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:03,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:03,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:36:03,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:03,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:03,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:03,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 06:36:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:03,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:03,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:03,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:04,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:04,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:04,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:04,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 06:36:04,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:36:04,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 794 [2020-09-25 06:36:04,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:04,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:04,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:04,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 06:36:04,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:04,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:04,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:04,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:04,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:04,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:04,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:04,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:04,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 06:36:04,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:04,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:04,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:04,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:04,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:04,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:04,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:04,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:04,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:04,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:04,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:04,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:04,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:04,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:04,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:04,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:04,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:04,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:04,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:04,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:04,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:04,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:04,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:04,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:36:04,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:04,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:04,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:04,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:36:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:04,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:04,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:04,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:04,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:04,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:36:04,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:04,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:04,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:04,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:04,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:04,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:04,764 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 28 proven. 38 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 06:36:04,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318509412] [2020-09-25 06:36:04,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:04,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 06:36:04,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954276346] [2020-09-25 06:36:04,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:36:04,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:04,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:36:04,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:36:04,766 INFO L87 Difference]: Start difference. First operand 90 states and 118 transitions. Second operand 10 states. [2020-09-25 06:36:04,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:04,916 INFO L93 Difference]: Finished difference Result 177 states and 258 transitions. [2020-09-25 06:36:04,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:36:04,917 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 101 [2020-09-25 06:36:04,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:04,918 INFO L225 Difference]: With dead ends: 177 [2020-09-25 06:36:04,918 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 06:36:04,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:36:04,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 06:36:04,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2020-09-25 06:36:04,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 06:36:04,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 109 transitions. [2020-09-25 06:36:04,930 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 109 transitions. Word has length 101 [2020-09-25 06:36:04,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:04,931 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 109 transitions. [2020-09-25 06:36:04,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:36:04,931 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 109 transitions. [2020-09-25 06:36:04,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-25 06:36:04,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:04,934 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 06:36:04,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 06:36:04,934 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:04,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:04,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1801853252, now seen corresponding path program 1 times [2020-09-25 06:36:04,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:04,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708646081] [2020-09-25 06:36:04,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:04,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:04,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:04,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:05,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:05,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:05,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:05,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:05,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:05,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:05,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:06,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:06,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:06,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:09,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:09,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:09,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:09,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 06:36:09,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 06:36:09,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 06:36:09,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:09,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:09,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:09,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:09,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 06:36:09,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:10,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:10,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:10,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:10,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:10,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:10,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:10,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:10,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:10,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:10,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:10,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:10,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:10,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:10,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:10,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:10,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:10,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:10,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:12,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:13,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:13,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:14,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:15,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 06:36:15,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 06:36:15,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 06:36:15,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:15,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:36:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:36:15,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:15,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:15,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:15,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 06:36:15,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:15,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 763 [2020-09-25 06:36:15,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:15,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:15,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:15,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:36:15,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:36:15,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:15,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:15,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:15,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:15,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:15,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 06:36:15,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:15,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:36:15,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:15,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:15,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:15,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:15,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:15,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:36:15,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:15,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:15,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:15,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:15,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:15,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:15,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:15,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:15,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:15,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:15,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:36:15,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:15,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:15,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:15,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:15,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:15,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:15,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:36:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:15,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:15,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:15,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:15,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:15,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:36:15,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:15,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:15,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:15,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:15,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:15,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:16,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 06:36:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:16,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:16,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 06:36:16,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:36:16,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 905 [2020-09-25 06:36:16,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:16,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 06:36:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:16,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:16,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:16,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:16,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:16,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:16,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 06:36:16,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:16,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:16,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:16,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:16,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:16,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:16,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:16,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:16,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:16,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:16,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:16,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:16,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:16,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:16,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:16,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:16,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:16,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:16,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:16,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:16,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:16,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:16,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:16,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:16,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:16,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:16,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:36:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:17,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:17,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:17,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:17,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:36:17,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:17,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:17,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:17,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:17,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:17,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 32 proven. 53 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-09-25 06:36:17,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708646081] [2020-09-25 06:36:17,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:17,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 06:36:17,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96655993] [2020-09-25 06:36:17,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:36:17,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:17,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:36:17,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:36:17,033 INFO L87 Difference]: Start difference. First operand 84 states and 109 transitions. Second operand 10 states. [2020-09-25 06:36:17,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:17,242 INFO L93 Difference]: Finished difference Result 189 states and 276 transitions. [2020-09-25 06:36:17,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:36:17,244 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-09-25 06:36:17,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:17,246 INFO L225 Difference]: With dead ends: 189 [2020-09-25 06:36:17,246 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 06:36:17,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-09-25 06:36:17,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 06:36:17,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 100. [2020-09-25 06:36:17,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-25 06:36:17,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 137 transitions. [2020-09-25 06:36:17,264 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 137 transitions. Word has length 103 [2020-09-25 06:36:17,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:17,265 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 137 transitions. [2020-09-25 06:36:17,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:36:17,265 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 137 transitions. [2020-09-25 06:36:17,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 06:36:17,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:17,267 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 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] [2020-09-25 06:36:17,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 06:36:17,267 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:17,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:17,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1951493560, now seen corresponding path program 1 times [2020-09-25 06:36:17,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:17,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999568951] [2020-09-25 06:36:17,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:17,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:17,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking...