/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:23:19,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:23:19,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:23:19,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:23:19,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:23:19,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:23:19,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:23:19,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:23:19,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:23:19,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:23:19,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:23:19,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:23:19,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:23:19,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:23:19,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:23:19,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:23:19,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:23:19,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:23:19,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:23:19,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:23:19,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:23:19,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:23:19,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:23:19,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:23:19,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:23:19,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:23:19,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:23:19,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:23:19,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:23:19,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:23:19,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:23:19,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:23:19,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:23:19,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:23:19,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:23:19,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:23:19,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:23:19,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:23:19,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:23:19,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:23:19,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:23:19,612 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:23:19,637 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:23:19,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:23:19,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:23:19,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:23:19,639 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:23:19,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:23:19,640 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:23:19,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:23:19,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:23:19,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:23:19,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:23:19,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:23:19,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:23:19,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:23:19,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:23:19,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:23:19,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:23:19,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:23:19,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:23:19,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:23:19,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:23:19,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:23:19,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:23:19,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:23:19,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:23:19,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:23:19,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:23:19,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:23:19,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:23:19,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:23:20,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:23:20,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:23:20,136 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:23:20,141 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:23:20,143 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:23:20,144 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-2.c [2020-09-25 13:23:20,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2aad1783a/45a51916b3514fe486e05b9e05c06eca/FLAG94b7ebbf1 [2020-09-25 13:23:20,804 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:23:20,805 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-2.c [2020-09-25 13:23:20,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2aad1783a/45a51916b3514fe486e05b9e05c06eca/FLAG94b7ebbf1 [2020-09-25 13:23:21,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2aad1783a/45a51916b3514fe486e05b9e05c06eca [2020-09-25 13:23:21,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:23:21,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:23:21,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:23:21,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:23:21,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:23:21,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:23:21" (1/1) ... [2020-09-25 13:23:21,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b72dacf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:21, skipping insertion in model container [2020-09-25 13:23:21,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:23:21" (1/1) ... [2020-09-25 13:23:21,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:23:21,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:23:21,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:23:21,449 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:23:21,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:23:21,490 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:23:21,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:21 WrapperNode [2020-09-25 13:23:21,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:23:21,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:23:21,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:23:21,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:23:21,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:21" (1/1) ... [2020-09-25 13:23:21,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:21" (1/1) ... [2020-09-25 13:23:21,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:21" (1/1) ... [2020-09-25 13:23:21,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:21" (1/1) ... [2020-09-25 13:23:21,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:21" (1/1) ... [2020-09-25 13:23:21,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:21" (1/1) ... [2020-09-25 13:23:21,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:21" (1/1) ... [2020-09-25 13:23:21,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:23:21,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:23:21,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:23:21,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:23:21,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:23:21,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:23:21,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:23:21,697 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 13:23:21,697 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 13:23:21,697 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:23:21,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:23:21,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:23:21,697 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 13:23:21,698 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 13:23:21,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:23:21,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:23:21,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:23:21,944 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:23:21,945 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:23:21,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:23:21 BoogieIcfgContainer [2020-09-25 13:23:21,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:23:21,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:23:21,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:23:21,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:23:21,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:23:21" (1/3) ... [2020-09-25 13:23:21,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3599f8ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:23:21, skipping insertion in model container [2020-09-25 13:23:21,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:21" (2/3) ... [2020-09-25 13:23:21,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3599f8ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:23:21, skipping insertion in model container [2020-09-25 13:23:21,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:23:21" (3/3) ... [2020-09-25 13:23:21,962 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-2.c [2020-09-25 13:23:21,974 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:23:21,986 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:23:22,040 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:23:22,097 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:23:22,097 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:23:22,097 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:23:22,097 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:23:22,098 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:23:22,098 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:23:22,098 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:23:22,098 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:23:22,122 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 13:23:22,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 13:23:22,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:22,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:22,132 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:22,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:22,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 13:23:22,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:22,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528757213] [2020-09-25 13:23:22,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:22,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:22,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:22,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:22,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:23:22,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:22,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-25 13:23:22,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:22,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:22,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:23:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:22,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:23:22,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:22,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:22,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:22,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:22,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:22,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:23:22,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:22,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:22,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:22,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:22,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:22,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:22,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:22,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:22,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:22,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:22,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:22,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:23:22,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:22,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:22,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:23:22,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:22,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:23:22,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:23:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:23:22,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528757213] [2020-09-25 13:23:22,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:23:22,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:23:22,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828638636] [2020-09-25 13:23:22,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:23:22,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:22,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:23:22,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:23:22,699 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 13:23:22,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:22,806 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 13:23:22,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:23:22,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 13:23:22,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:22,822 INFO L225 Difference]: With dead ends: 58 [2020-09-25 13:23:22,822 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 13:23:22,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:23:22,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 13:23:22,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 13:23:22,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 13:23:22,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 13:23:22,886 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 13:23:22,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:22,887 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 13:23:22,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:23:22,887 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 13:23:22,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 13:23:22,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:22,890 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 13:23:22,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:23:22,891 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:22,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:22,891 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 13:23:22,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:22,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127154658] [2020-09-25 13:23:22,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:22,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:22,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:23,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:23,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:23:23,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:23,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 13:23:23,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:23,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:23,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:23,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:23:23,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:23,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:23,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:23,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:23,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:23,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:23:23,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:23,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:23,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:23,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:23,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:23,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:23,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:23,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:23,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:23,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:23,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:23,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 13:23:23,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:23,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:23,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:23,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:23,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:23,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:23,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:23:23,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127154658] [2020-09-25 13:23:23,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:23:23,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:23:23,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964945715] [2020-09-25 13:23:23,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:23:23,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:23,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:23:23,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:23:23,160 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 13:23:23,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:23,228 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 13:23:23,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:23:23,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 13:23:23,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:23,231 INFO L225 Difference]: With dead ends: 50 [2020-09-25 13:23:23,231 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 13:23:23,233 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 13:23:23,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 13:23:23,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 13:23:23,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 13:23:23,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 13:23:23,244 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 13:23:23,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:23,244 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 13:23:23,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:23:23,245 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 13:23:23,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 13:23:23,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:23,247 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 13:23:23,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:23:23,248 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:23,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:23,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 13:23:23,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:23,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283409520] [2020-09-25 13:23:23,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:23,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:23,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:23,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:23,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:25,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 13:23:25,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:23:25,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2002 [2020-09-25 13:23:25,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:25,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:25,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:25,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:25,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:23:25,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:25,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:25,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:25,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:25,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:25,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:25,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:25,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:25,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:25,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:25,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:25,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:25,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:25,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:25,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:25,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-25 13:23:25,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:25,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:25,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:25,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:25,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:25,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:25,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:25,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:23:25,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:25,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:25,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:25,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:25,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:25,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:25,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:25,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:25,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:25,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:25,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:23:25,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:25,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:25,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:25,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:25,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:25,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:25,605 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 13:23:25,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283409520] [2020-09-25 13:23:25,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:23:25,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:23:25,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862210172] [2020-09-25 13:23:25,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:23:25,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:25,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:23:25,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:23:25,609 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 13:23:25,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:25,820 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 13:23:25,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:23:25,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 13:23:25,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:25,828 INFO L225 Difference]: With dead ends: 58 [2020-09-25 13:23:25,828 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 13:23:25,831 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 13:23:25,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 13:23:25,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 13:23:25,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 13:23:25,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 13:23:25,858 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 13:23:25,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:25,859 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 13:23:25,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:23:25,859 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 13:23:25,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 13:23:25,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:25,865 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 13:23:25,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:23:25,865 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:25,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:25,867 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 13:23:25,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:25,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959069253] [2020-09-25 13:23:25,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:25,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:27,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 13:23:27,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:23:27,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1831 [2020-09-25 13:23:27,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:27,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:27,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:27,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:23:27,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:23:27,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:27,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:27,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:27,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:27,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:27,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:23:27,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:27,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:27,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:27,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:27,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:23:27,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:27,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:27,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:23:27,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:27,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 13:23:27,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:27,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:27,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:27,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:23:27,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:23:27,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:27,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:27,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:27,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:27,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:27,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:23:27,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:27,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:27,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:27,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:27,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:27,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:23:27,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:27,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:27,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:27,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:27,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 13:23:27,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:27,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:27,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:27,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:27,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:27,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:23:28,033 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 13:23:28,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959069253] [2020-09-25 13:23:28,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:28,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:23:28,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270414314] [2020-09-25 13:23:28,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:23:28,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:28,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:23:28,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:23:28,046 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 13:23:28,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:28,202 INFO L93 Difference]: Finished difference Result 104 states and 138 transitions. [2020-09-25 13:23:28,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:23:28,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 13:23:28,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:28,210 INFO L225 Difference]: With dead ends: 104 [2020-09-25 13:23:28,211 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 13:23:28,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:28,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 13:23:28,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 13:23:28,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:23:28,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-09-25 13:23:28,237 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 35 [2020-09-25 13:23:28,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:28,238 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-09-25 13:23:28,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:23:28,240 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-09-25 13:23:28,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 13:23:28,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:28,253 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 13:23:28,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:23:28,253 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:28,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:28,254 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 13:23:28,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:28,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918147600] [2020-09-25 13:23:28,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:28,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:31,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:33,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:33,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 13:23:33,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:23:33,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:23:33,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:33,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:33,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:33,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:33,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 13:23:33,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:33,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:33,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:33,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:33,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:33,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:33,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:33,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:33,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:33,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:33,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:33,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:33,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:33,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:33,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:33,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:33,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:33,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:34,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:36,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:23:36,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:23:36,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3175 [2020-09-25 13:23:36,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:36,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:36,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:36,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:36,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:23:36,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:36,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:36,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:36,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:36,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:36,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 13:23:36,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:36,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:36,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:36,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:36,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:36,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:36,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:36,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:36,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:36,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:36,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:36,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:36,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:36,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:36,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:36,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:36,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:36,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:36,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:36,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:36,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:36,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:36,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:36,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:36,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:36,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:36,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:23:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:36,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:36,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:36,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:36,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:23:36,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:36,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:36,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:36,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:36,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:36,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:36,713 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 13:23:36,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918147600] [2020-09-25 13:23:36,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:36,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:23:36,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152083499] [2020-09-25 13:23:36,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:23:36,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:36,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:23:36,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:23:36,716 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 7 states. [2020-09-25 13:23:36,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:36,855 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2020-09-25 13:23:36,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:23:36,856 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 13:23:36,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:36,858 INFO L225 Difference]: With dead ends: 72 [2020-09-25 13:23:36,858 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 13:23:36,859 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 13:23:36,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 13:23:36,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 13:23:36,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:23:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-09-25 13:23:36,869 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 51 [2020-09-25 13:23:36,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:36,870 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-09-25 13:23:36,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:23:36,870 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-09-25 13:23:36,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 13:23:36,872 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:36,872 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 13:23:36,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:23:36,873 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:36,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:36,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 13:23:36,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:36,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680804619] [2020-09-25 13:23:36,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:36,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:37,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:37,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:37,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:37,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:37,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:37,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:41,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:23:41,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:23:41,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 13:23:41,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:41,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 13:23:41,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:41,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:41,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:41,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:41,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:41,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:41,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:41,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:41,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:41,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:41,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:41,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:41,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:41,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:42,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:46,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 13:23:46,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:23:46,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:23:46,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:46,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 13:23:46,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:46,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:46,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:47,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:47,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:47,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 13:23:47,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:47,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:47,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:23:47,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:47,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:23:47,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:47,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:47,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:47,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:47,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:47,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:23:47,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:47,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:47,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:47,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:47,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:47,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:47,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:47,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:47,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:47,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:47,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:23:47,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:47,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:47,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:47,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:47,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:47,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:47,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:23:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:47,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:47,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:47,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:47,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 13:23:47,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:47,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:47,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:47,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:47,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:47,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:47,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:47,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:47,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:47,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:47,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:47,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:47,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:47,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:47,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:47,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:47,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:47,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:47,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:47,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:47,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:47,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:47,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:47,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:47,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:47,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:47,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:47,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 13:23:47,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680804619] [2020-09-25 13:23:47,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:47,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:23:47,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313225558] [2020-09-25 13:23:47,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:23:47,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:47,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:23:47,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:47,377 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 9 states. [2020-09-25 13:23:47,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:47,613 INFO L93 Difference]: Finished difference Result 78 states and 103 transitions. [2020-09-25 13:23:47,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:23:47,614 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-09-25 13:23:47,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:47,616 INFO L225 Difference]: With dead ends: 78 [2020-09-25 13:23:47,616 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 13:23:47,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:23:47,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 13:23:47,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2020-09-25 13:23:47,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 13:23:47,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2020-09-25 13:23:47,646 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 67 [2020-09-25 13:23:47,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:47,647 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2020-09-25 13:23:47,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:23:47,648 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2020-09-25 13:23:47,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 13:23:47,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:47,652 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 13:23:47,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:23:47,653 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:47,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:47,653 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 13:23:47,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:47,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49433158] [2020-09-25 13:23:47,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:47,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:48,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:48,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:49,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:50,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:52,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 13:23:52,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:23:52,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:23:52,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:52,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:52,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:52,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:52,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 13:23:52,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:52,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:52,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:52,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:52,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:52,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:52,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:52,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:52,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:52,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:52,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:53,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:57,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:23:57,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:23:57,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:23:57,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:57,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:57,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:57,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:23:57,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 13:23:57,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:57,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:57,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:58,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:23:58,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:58,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-09-25 13:23:58,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:58,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:58,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:58,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:58,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:23:58,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:58,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:58,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:58,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:58,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:58,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:23:58,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:58,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:58,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:58,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:58,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:58,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:58,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:58,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:58,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:58,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:58,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:23:58,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:58,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:58,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:58,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:58,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:58,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:58,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:23:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:58,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:58,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:23:58,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:58,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 13:23:58,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:58,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:58,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:58,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:58,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:23:58,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:58,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:58,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:58,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:58,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:58,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:23:58,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:58,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:58,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:58,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:58,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:58,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:58,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:58,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:58,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:58,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:58,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:23:58,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:58,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:58,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:58,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:58,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:58,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:58,453 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-25 13:23:58,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49433158] [2020-09-25 13:23:58,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:58,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:23:58,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383859356] [2020-09-25 13:23:58,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:23:58,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:58,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:23:58,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:23:58,459 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand 10 states. [2020-09-25 13:23:58,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:58,701 INFO L93 Difference]: Finished difference Result 140 states and 210 transitions. [2020-09-25 13:23:58,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:23:58,703 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-09-25 13:23:58,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:58,706 INFO L225 Difference]: With dead ends: 140 [2020-09-25 13:23:58,706 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 13:23:58,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:23:58,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 13:23:58,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-09-25 13:23:58,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-25 13:23:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 111 transitions. [2020-09-25 13:23:58,720 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 111 transitions. Word has length 69 [2020-09-25 13:23:58,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:58,721 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 111 transitions. [2020-09-25 13:23:58,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:23:58,721 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 111 transitions. [2020-09-25 13:23:58,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 13:23:58,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:58,723 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:58,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:23:58,723 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:58,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:58,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1523115787, now seen corresponding path program 1 times [2020-09-25 13:23:58,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:58,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143499845] [2020-09-25 13:23:58,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:58,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:01,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:01,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:01,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:03,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 13:24:03,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 13:24:03,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:24:03,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:03,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:03,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:24:03,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:24:03,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 13:24:03,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:03,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:03,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:03,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:03,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:03,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:24:03,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:03,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:03,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:03,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:03,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:03,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:03,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:24:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:03,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:04,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:05,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:05,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:08,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 13:24:08,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:24:08,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:24:08,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:08,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:08,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:24:08,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:24:08,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 13:24:08,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:08,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:24:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:08,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:09,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:09,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:09,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:09,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 13:24:09,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:24:09,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 944 [2020-09-25 13:24:09,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:09,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:09,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:24:09,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:09,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:24:09,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:09,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:24:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:09,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:09,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:09,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:09,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:24:09,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:24:09,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 13:24:09,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:09,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:09,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:24:09,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:09,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:24:09,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:09,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:24:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:09,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:09,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:09,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:09,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:09,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:24:09,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:09,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:09,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:09,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:09,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:09,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:24:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:09,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:09,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:09,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:09,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:09,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:24:09,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:09,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:09,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:09,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:24:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:09,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:09,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:09,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:09,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:09,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:24:09,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:09,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:24:09,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:09,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:24:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:09,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:09,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:09,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:10,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:10,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:24:10,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:24:10,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 13:24:10,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:10,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:24:10,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:24:10,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:10,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:24:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:10,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:10,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:10,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:24:10,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:24:10,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:10,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:24:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:24:10,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:10,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:24:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:10,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:10,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:10,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:10,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:10,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:24:10,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:10,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:24:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:24:10,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:10,200 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 30 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 13:24:10,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143499845] [2020-09-25 13:24:10,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:24:10,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:24:10,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74270344] [2020-09-25 13:24:10,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:24:10,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:10,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:24:10,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:24:10,202 INFO L87 Difference]: Start difference. First operand 82 states and 111 transitions. Second operand 11 states. [2020-09-25 13:24:10,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:10,570 INFO L93 Difference]: Finished difference Result 213 states and 339 transitions. [2020-09-25 13:24:10,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:24:10,572 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2020-09-25 13:24:10,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:10,574 INFO L225 Difference]: With dead ends: 213 [2020-09-25 13:24:10,574 INFO L226 Difference]: Without dead ends: 105 [2020-09-25 13:24:10,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:24:10,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-25 13:24:10,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2020-09-25 13:24:10,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 13:24:10,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 114 transitions. [2020-09-25 13:24:10,595 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 114 transitions. Word has length 85 [2020-09-25 13:24:10,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:10,595 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 114 transitions. [2020-09-25 13:24:10,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:24:10,596 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 114 transitions. [2020-09-25 13:24:10,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 13:24:10,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:10,597 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:10,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:24:10,598 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:10,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:10,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1641825993, now seen corresponding path program 1 times [2020-09-25 13:24:10,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:10,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782490221] [2020-09-25 13:24:10,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:10,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:10,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:10,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:10,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:10,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:10,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:10,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:11,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:11,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:11,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:11,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:11,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:11,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:12,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:12,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:13,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:15,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:15,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 13:24:15,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 13:24:15,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 13:24:15,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:15,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:24:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:24:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 13:24:15,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:15,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:15,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:15,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:15,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:15,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:15,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:24:15,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:15,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:15,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:15,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:15,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:24:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:15,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:15,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:15,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:15,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:15,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:15,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:15,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:16,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:16,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:17,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:17,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:17,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking...