/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:15:36,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:15:36,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:15:36,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:15:36,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:15:36,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:15:36,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:15:36,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:15:36,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:15:36,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:15:36,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:15:36,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:15:36,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:15:36,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:15:36,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:15:36,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:15:36,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:15:36,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:15:36,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:15:36,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:15:36,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:15:36,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:15:36,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:15:36,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:15:36,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:15:36,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:15:36,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:15:36,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:15:36,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:15:36,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:15:36,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:15:36,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:15:36,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:15:36,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:15:36,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:15:36,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:15:36,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:15:36,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:15:36,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:15:36,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:15:36,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:15:36,536 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 12:15:36,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:15:36,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:15:36,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:15:36,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:15:36,597 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:15:36,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:15:36,598 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:15:36,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:15:36,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:15:36,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:15:36,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:15:36,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:15:36,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:15:36,599 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:15:36,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:15:36,600 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:15:36,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:15:36,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:15:36,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:15:36,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:15:36,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:15:36,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:15:36,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:15:36,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:15:36,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:15:36,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:15:36,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:15:36,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:15:36,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:15:36,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:15:37,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:15:37,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:15:37,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:15:37,109 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:15:37,110 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:15:37,111 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c [2020-09-25 12:15:37,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76676ca8f/825a3825546742ec810cce80e1123e2f/FLAG4ed9ef710 [2020-09-25 12:15:37,730 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:15:37,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c [2020-09-25 12:15:37,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76676ca8f/825a3825546742ec810cce80e1123e2f/FLAG4ed9ef710 [2020-09-25 12:15:38,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76676ca8f/825a3825546742ec810cce80e1123e2f [2020-09-25 12:15:38,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:15:38,083 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:15:38,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:15:38,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:15:38,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:15:38,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:15:38" (1/1) ... [2020-09-25 12:15:38,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5335cf9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38, skipping insertion in model container [2020-09-25 12:15:38,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:15:38" (1/1) ... [2020-09-25 12:15:38,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:15:38,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:15:38,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:15:38,342 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:15:38,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:15:38,375 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:15:38,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38 WrapperNode [2020-09-25 12:15:38,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:15:38,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:15:38,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:15:38,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:15:38,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38" (1/1) ... [2020-09-25 12:15:38,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38" (1/1) ... [2020-09-25 12:15:38,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38" (1/1) ... [2020-09-25 12:15:38,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38" (1/1) ... [2020-09-25 12:15:38,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38" (1/1) ... [2020-09-25 12:15:38,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38" (1/1) ... [2020-09-25 12:15:38,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38" (1/1) ... [2020-09-25 12:15:38,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:15:38,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:15:38,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:15:38,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:15:38,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:15:38,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:15:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:15:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 12:15:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 12:15:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:15:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:15:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:15:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 12:15:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 12:15:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:15:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:15:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:15:38,817 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:15:38,817 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:15:38,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:15:38 BoogieIcfgContainer [2020-09-25 12:15:38,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:15:38,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:15:38,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:15:38,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:15:38,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:15:38" (1/3) ... [2020-09-25 12:15:38,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d63b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:15:38, skipping insertion in model container [2020-09-25 12:15:38,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38" (2/3) ... [2020-09-25 12:15:38,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d63b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:15:38, skipping insertion in model container [2020-09-25 12:15:38,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:15:38" (3/3) ... [2020-09-25 12:15:38,858 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-2.c [2020-09-25 12:15:38,877 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:15:38,887 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:15:38,910 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:15:38,942 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:15:38,943 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:15:38,943 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:15:38,943 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:15:38,943 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:15:38,943 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:15:38,943 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:15:38,943 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:15:38,963 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 12:15:38,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 12:15:38,970 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:38,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:38,972 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:38,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:38,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 12:15:38,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:38,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699473149] [2020-09-25 12:15:38,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:39,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:39,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:15:39,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:39,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 12:15:39,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:39,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:39,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:39,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:15:39,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:39,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:15:39,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:39,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:39,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:39,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:39,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:15:39,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:39,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:39,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:39,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:39,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:39,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:39,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:39,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:39,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:15:39,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:39,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:39,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:15:39,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:39,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:15:39,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:39,473 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 12:15:39,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699473149] [2020-09-25 12:15:39,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:39,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:15:39,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213602962] [2020-09-25 12:15:39,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:15:39,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:39,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:15:39,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:15:39,504 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 12:15:39,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:39,592 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 12:15:39,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:15:39,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 12:15:39,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:39,608 INFO L225 Difference]: With dead ends: 58 [2020-09-25 12:15:39,609 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 12:15:39,613 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 12:15:39,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 12:15:39,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 12:15:39,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:15:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 12:15:39,669 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 12:15:39,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:39,670 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 12:15:39,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:15:39,670 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 12:15:39,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 12:15:39,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:39,673 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 12:15:39,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:15:39,673 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:39,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:39,674 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 12:15:39,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:39,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777679040] [2020-09-25 12:15:39,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:39,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:39,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 12:15:39,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:39,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 12:15:39,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:39,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:39,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:39,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:39,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:39,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:39,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:39,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:39,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:39,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:39,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:15:39,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:39,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:39,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:39,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:39,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:39,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:39,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:39,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:39,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:39,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:39,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 12:15:39,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:39,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:39,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:39,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:39,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:15:39,915 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 12:15:39,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777679040] [2020-09-25 12:15:39,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:39,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:15:39,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206454858] [2020-09-25 12:15:39,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:15:39,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:39,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:15:39,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:15:39,924 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 12:15:40,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:40,006 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 12:15:40,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:15:40,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 12:15:40,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:40,009 INFO L225 Difference]: With dead ends: 50 [2020-09-25 12:15:40,009 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 12:15:40,011 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 12:15:40,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 12:15:40,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 12:15:40,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:15:40,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 12:15:40,021 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 12:15:40,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:40,022 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 12:15:40,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:15:40,022 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 12:15:40,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 12:15:40,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:40,024 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 12:15:40,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:15:40,025 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:40,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:40,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 12:15:40,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:40,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437138700] [2020-09-25 12:15:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:40,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:40,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:40,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:40,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:41,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 12:15:41,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:15:41,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1814 [2020-09-25 12:15:41,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:41,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:41,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:41,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:41,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:15:41,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:15:41,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:41,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:41,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:41,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:41,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:41,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:41,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:41,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:41,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:41,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:41,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:41,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:41,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:42,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:42,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:15:42,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 12:15:42,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:42,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:42,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:42,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:42,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:42,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:15:42,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:42,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:42,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:42,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:42,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 12:15:42,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:42,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:42,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:42,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:15:42,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:42,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:42,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:42,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:42,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:15:42,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:42,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:42,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:42,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:42,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:42,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:42,235 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:15:42,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437138700] [2020-09-25 12:15:42,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:42,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:15:42,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805012252] [2020-09-25 12:15:42,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:42,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:42,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:42,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:42,246 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 12:15:42,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:42,456 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 12:15:42,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:42,458 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 12:15:42,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:42,462 INFO L225 Difference]: With dead ends: 58 [2020-09-25 12:15:42,462 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 12:15:42,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:15:42,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 12:15:42,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 12:15:42,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 12:15:42,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 12:15:42,486 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 12:15:42,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:42,489 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 12:15:42,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:42,490 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 12:15:42,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 12:15:42,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:42,496 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 12:15:42,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:15:42,496 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:42,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:42,497 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 12:15:42,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:42,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827331716] [2020-09-25 12:15:42,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:42,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:44,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:44,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 12:15:44,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:15:44,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1694 [2020-09-25 12:15:44,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:44,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 12:15:44,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:44,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:44,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:44,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:44,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:44,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:44,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:44,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:44,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:44,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:44,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:44,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:44,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:44,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:44,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:44,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:44,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:44,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:15:44,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:15:44,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-09-25 12:15:44,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:44,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:44,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:44,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:44,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:15:44,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:44,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:44,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:44,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:44,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:44,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:44,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:15:44,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:44,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:15:44,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:44,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:15:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:44,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:44,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:44,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:44,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:44,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:15:44,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:44,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:44,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:15:44,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827331716] [2020-09-25 12:15:44,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:44,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:15:44,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068704634] [2020-09-25 12:15:44,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:44,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:44,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:44,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:44,777 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 12:15:44,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:44,938 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 12:15:44,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:44,939 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 12:15:44,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:44,941 INFO L225 Difference]: With dead ends: 72 [2020-09-25 12:15:44,942 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 12:15:44,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:15:44,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 12:15:44,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2020-09-25 12:15:44,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 12:15:44,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 12:15:44,954 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 35 [2020-09-25 12:15:44,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:44,955 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 12:15:44,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:44,955 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 12:15:44,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 12:15:44,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:44,957 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:44,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:15:44,958 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:44,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:44,959 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 12:15:44,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:44,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41890958] [2020-09-25 12:15:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:44,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:44,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:45,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:45,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:45,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:45,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:45,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:48,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:49,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:49,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 12:15:49,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:15:49,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:15:49,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:49,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 12:15:49,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:49,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:49,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:49,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:49,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:49,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:50,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:15:50,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:50,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:50,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:50,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:50,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:52,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 12:15:52,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:15:52,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2364 [2020-09-25 12:15:52,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:52,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:52,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:52,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:52,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:15:52,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:52,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:52,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:52,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:52,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:52,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 12:15:52,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:52,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:52,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:52,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:52,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:52,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:52,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:52,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:52,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:52,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:52,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:15:52,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:52,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:52,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:52,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:52,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:52,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:15:52,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:52,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:52,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:52,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:52,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:15:52,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:52,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:52,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:52,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:52,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:52,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:15:52,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:15:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:52,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:52,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:52,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:52,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:15:52,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:52,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:52,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:52,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:52,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:15:52,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:15:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 12:15:52,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41890958] [2020-09-25 12:15:52,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:52,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:15:52,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939957525] [2020-09-25 12:15:52,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:52,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:52,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:52,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:52,633 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 12:15:52,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:52,831 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 12:15:52,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:52,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 12:15:52,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:52,837 INFO L225 Difference]: With dead ends: 72 [2020-09-25 12:15:52,837 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 12:15:52,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:15:52,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 12:15:52,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 50. [2020-09-25 12:15:52,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 12:15:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 12:15:52,864 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 51 [2020-09-25 12:15:52,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:52,865 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 12:15:52,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:52,865 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 12:15:52,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 12:15:52,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:52,877 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:52,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:15:52,878 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:52,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:52,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 12:15:52,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:52,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803471164] [2020-09-25 12:15:52,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:52,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:53,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:53,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:53,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:53,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:53,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:54,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:57,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 12:15:57,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:15:57,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:15:57,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:57,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:57,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:57,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:57,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 12:15:57,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:57,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:57,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:57,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:57,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:57,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:57,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:57,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:57,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:57,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:57,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:57,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:57,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:57,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:58,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:58,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:58,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:58,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:58,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:58,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:02,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:16:02,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:16:02,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:16:02,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:02,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:02,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:02,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:02,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 12:16:02,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:02,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:02,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:03,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:03,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:16:03,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:03,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 12:16:03,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:03,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:03,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:03,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:03,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:16:03,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:03,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:03,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:03,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:03,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:03,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:03,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:03,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:03,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:03,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:03,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:16:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:03,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:03,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:03,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:03,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:03,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:03,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:03,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:03,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:03,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:16:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:03,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:03,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:03,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:03,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:03,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:16:03,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:16:03,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 12:16:03,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:03,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:03,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:16:03,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:16:03,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:03,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:03,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:03,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:03,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:03,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:03,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:16:03,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:03,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:03,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:03,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:03,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:03,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:16:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:03,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:03,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:03,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:03,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:03,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:16:03,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:03,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:03,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:03,255 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 12:16:03,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803471164] [2020-09-25 12:16:03,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:03,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:16:03,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456615753] [2020-09-25 12:16:03,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:16:03,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:03,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:16:03,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:16:03,258 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 8 states. [2020-09-25 12:16:03,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:03,448 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2020-09-25 12:16:03,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:16:03,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-09-25 12:16:03,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:03,451 INFO L225 Difference]: With dead ends: 93 [2020-09-25 12:16:03,451 INFO L226 Difference]: Without dead ends: 87 [2020-09-25 12:16:03,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 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 12:16:03,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-25 12:16:03,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2020-09-25 12:16:03,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-25 12:16:03,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 104 transitions. [2020-09-25 12:16:03,464 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 104 transitions. Word has length 67 [2020-09-25 12:16:03,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:03,465 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 104 transitions. [2020-09-25 12:16:03,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:16:03,465 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2020-09-25 12:16:03,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 12:16:03,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:03,468 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 12:16:03,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:16:03,468 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:03,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:03,469 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 12:16:03,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:03,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678156075] [2020-09-25 12:16:03,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:03,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:03,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:03,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:03,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:03,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:03,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:04,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:04,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:05,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:07,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:07,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:08,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:08,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:08,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 12:16:08,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:16:08,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:16:08,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:08,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:16:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 12:16:08,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:08,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:08,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:08,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:08,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:08,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:08,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:08,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:08,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:08,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:08,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:08,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:08,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:08,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:08,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:08,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:08,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:08,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:08,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:08,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:10,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:10,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:13,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:16:13,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 12:16:13,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:16:13,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:13,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 12:16:13,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:16:13,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:13,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:13,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:16:13,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:13,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:16:13,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:13,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:13,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:16:13,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:13,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:13,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:13,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:16:13,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:13,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:13,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:13,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:13,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:13,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:13,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:13,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:13,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:16:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:13,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:13,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:13,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:13,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:13,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:13,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:13,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:13,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:13,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:13,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:13,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:16:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:13,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:13,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:16:13,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:13,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 12:16:13,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:13,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:16:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:16:13,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:13,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:13,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:13,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:16:13,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:13,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:16:13,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:13,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:13,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:13,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:13,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:16:13,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:13,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:16:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:13,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:13,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:13,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:13,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:16:13,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:13,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:13,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:13,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:13,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:13,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 12:16:13,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678156075] [2020-09-25 12:16:13,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:13,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:16:13,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300174196] [2020-09-25 12:16:13,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:16:13,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:13,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:16:13,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:16:13,893 INFO L87 Difference]: Start difference. First operand 79 states and 104 transitions. Second operand 8 states. [2020-09-25 12:16:14,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:14,025 INFO L93 Difference]: Finished difference Result 141 states and 197 transitions. [2020-09-25 12:16:14,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:16:14,025 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-09-25 12:16:14,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:14,028 INFO L225 Difference]: With dead ends: 141 [2020-09-25 12:16:14,028 INFO L226 Difference]: Without dead ends: 135 [2020-09-25 12:16:14,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 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 12:16:14,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-09-25 12:16:14,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2020-09-25 12:16:14,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-25 12:16:14,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 156 transitions. [2020-09-25 12:16:14,047 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 156 transitions. Word has length 69 [2020-09-25 12:16:14,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:14,047 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 156 transitions. [2020-09-25 12:16:14,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:16:14,047 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 156 transitions. [2020-09-25 12:16:14,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 12:16:14,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:14,050 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 12:16:14,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:16:14,050 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:14,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:14,051 INFO L82 PathProgramCache]: Analyzing trace with hash 2120760888, now seen corresponding path program 1 times [2020-09-25 12:16:14,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:14,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685696119] [2020-09-25 12:16:14,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:14,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:14,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:14,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:14,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:14,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:14,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:14,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:14,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:14,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:15,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:15,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:16,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:16,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:19,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:19,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 12:16:19,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:16:19,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 12:16:19,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:19,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:19,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:16:19,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:16:19,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:16:19,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:19,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:19,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:19,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:19,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:19,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:19,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:19,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:19,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:19,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:19,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:19,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:19,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:19,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:19,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:19,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:19,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:19,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:19,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:19,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:19,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:19,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:24,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 12:16:24,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:16:24,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 12:16:24,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:24,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:24,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:16:24,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:16:24,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:16:24,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:24,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:24,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:25,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:25,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 12:16:25,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:16:25,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-09-25 12:16:25,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:25,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:16:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:16:25,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:25,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:25,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:25,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:25,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:25,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:16:25,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:25,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 12:16:25,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:25,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:25,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:25,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:25,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:16:25,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:25,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:25,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:25,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:25,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:25,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:25,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:25,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:25,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:25,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:25,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:16:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:25,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:25,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:25,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:25,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:25,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:25,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:25,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:25,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:25,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:25,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:25,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:25,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:16:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:25,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:25,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:25,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:25,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:25,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:16:25,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:25,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:25,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:25,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 12:16:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:25,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:25,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:25,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:25,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:25,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:25,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:26,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:26,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 12:16:26,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:16:26,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1324 [2020-09-25 12:16:26,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:26,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:26,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:26,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:26,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 12:16:26,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:26,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:26,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:26,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:26,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:26,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:16:26,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:26,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 12:16:26,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:26,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:26,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:26,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:26,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:16:26,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:26,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:26,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:26,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:26,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:26,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:26,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:26,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:26,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:26,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:26,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:26,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:16:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:26,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:26,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:26,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:26,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:26,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:16:26,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:26,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:26,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:26,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:26,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:26,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:16:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:26,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:26,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:26,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:26,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:26,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:16:26,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:26,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:26,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:26,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:26,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:26,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 38 proven. 28 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 12:16:26,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685696119] [2020-09-25 12:16:26,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:26,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:16:26,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990094319] [2020-09-25 12:16:26,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:16:26,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:26,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:16:26,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:16:26,634 INFO L87 Difference]: Start difference. First operand 109 states and 156 transitions. Second operand 10 states. [2020-09-25 12:16:26,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:26,986 INFO L93 Difference]: Finished difference Result 232 states and 397 transitions. [2020-09-25 12:16:26,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:16:26,986 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 101 [2020-09-25 12:16:26,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:26,988 INFO L225 Difference]: With dead ends: 232 [2020-09-25 12:16:26,988 INFO L226 Difference]: Without dead ends: 104 [2020-09-25 12:16:26,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:16:26,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-25 12:16:27,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 92. [2020-09-25 12:16:27,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 12:16:27,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 119 transitions. [2020-09-25 12:16:27,003 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 119 transitions. Word has length 101 [2020-09-25 12:16:27,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:27,004 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 119 transitions. [2020-09-25 12:16:27,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:16:27,004 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 119 transitions. [2020-09-25 12:16:27,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 12:16:27,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:27,006 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 12:16:27,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:16:27,007 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:27,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:27,007 INFO L82 PathProgramCache]: Analyzing trace with hash 2103958142, now seen corresponding path program 1 times [2020-09-25 12:16:27,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:27,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059973402] [2020-09-25 12:16:27,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:27,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:30,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:31,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:31,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:31,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:32,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 12:16:32,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:16:32,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 12:16:32,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:32,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:16:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:16:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 12:16:32,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:32,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:32,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:32,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:32,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:32,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:32,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:32,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:32,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:32,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:32,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:32,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:32,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:32,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:33,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:33,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:33,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking...