/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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_10-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:53:18,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:53:18,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:53:18,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:53:18,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:53:18,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:53:18,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:53:18,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:53:18,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:53:18,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:53:18,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:53:18,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:53:18,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:53:18,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:53:18,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:53:18,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:53:18,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:53:18,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:53:18,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:53:18,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:53:18,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:53:18,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:53:18,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:53:18,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:53:18,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:53:18,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:53:18,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:53:18,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:53:18,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:53:18,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:53:18,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:53:18,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:53:18,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:53:18,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:53:18,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:53:18,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:53:18,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:53:18,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:53:18,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:53:18,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:53:18,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:53:18,633 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 08:53:18,679 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:53:18,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:53:18,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:53:18,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:53:18,682 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:53:18,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:53:18,682 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:53:18,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:53:18,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:53:18,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:53:18,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:53:18,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:53:18,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:53:18,685 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:53:18,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:53:18,685 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:53:18,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:53:18,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:53:18,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:53:18,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:53:18,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:53:18,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:53:18,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:53:18,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:53:18,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:53:18,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:53:18,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:53:18,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:53:18,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:53:18,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:53:19,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:53:19,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:53:19,147 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:53:19,148 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:53:19,149 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:53:19,150 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_10-1.c [2020-09-25 08:53:19,233 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0be2bf1b2/4e326e1563ba4ba0838500a28583bccf/FLAGe595dc1fd [2020-09-25 08:53:19,801 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:53:19,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_10-1.c [2020-09-25 08:53:19,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0be2bf1b2/4e326e1563ba4ba0838500a28583bccf/FLAGe595dc1fd [2020-09-25 08:53:20,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0be2bf1b2/4e326e1563ba4ba0838500a28583bccf [2020-09-25 08:53:20,118 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:53:20,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:53:20,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:53:20,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:53:20,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:53:20,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:53:20" (1/1) ... [2020-09-25 08:53:20,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d85ba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:20, skipping insertion in model container [2020-09-25 08:53:20,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:53:20" (1/1) ... [2020-09-25 08:53:20,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:53:20,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:53:20,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:53:20,376 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:53:20,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:53:20,408 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:53:20,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:20 WrapperNode [2020-09-25 08:53:20,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:53:20,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:53:20,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:53:20,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:53:20,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:20" (1/1) ... [2020-09-25 08:53:20,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:20" (1/1) ... [2020-09-25 08:53:20,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:20" (1/1) ... [2020-09-25 08:53:20,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:20" (1/1) ... [2020-09-25 08:53:20,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:20" (1/1) ... [2020-09-25 08:53:20,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:20" (1/1) ... [2020-09-25 08:53:20,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:20" (1/1) ... [2020-09-25 08:53:20,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:53:20,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:53:20,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:53:20,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:53:20,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:53:20,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:53:20,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:53:20,589 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 08:53:20,589 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 08:53:20,589 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:53:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:53:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:53:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 08:53:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 08:53:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:53:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:53:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:53:20,854 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:53:20,855 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 08:53:20,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:53:20 BoogieIcfgContainer [2020-09-25 08:53:20,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:53:20,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:53:20,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:53:20,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:53:20,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:53:20" (1/3) ... [2020-09-25 08:53:20,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8df82cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:53:20, skipping insertion in model container [2020-09-25 08:53:20,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:20" (2/3) ... [2020-09-25 08:53:20,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8df82cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:53:20, skipping insertion in model container [2020-09-25 08:53:20,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:53:20" (3/3) ... [2020-09-25 08:53:20,872 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_10-1.c [2020-09-25 08:53:20,897 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:53:20,907 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:53:20,927 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:53:20,958 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:53:20,958 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:53:20,958 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:53:20,959 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:53:20,959 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:53:20,959 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:53:20,959 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:53:20,959 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:53:20,980 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 08:53:20,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 08:53:20,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:20,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:20,989 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:20,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:20,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 08:53:21,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:21,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231681490] [2020-09-25 08:53:21,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:21,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:21,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:53:21,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:21,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 08:53:21,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:21,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:53:21,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:53:21,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:21,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:21,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:21,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:21,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:53:21,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:21,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:21,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:21,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:21,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:21,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:21,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:21,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:21,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:21,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:21,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 08:53:21,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:21,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:21,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:21,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:21,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:21,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:53:21,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231681490] [2020-09-25 08:53:21,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:53:21,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:53:21,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857342555] [2020-09-25 08:53:21,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:53:21,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:21,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:53:21,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:53:21,387 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 08:53:21,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:21,515 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 08:53:21,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:53:21,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 08:53:21,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:21,532 INFO L225 Difference]: With dead ends: 58 [2020-09-25 08:53:21,532 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 08:53:21,536 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 08:53:21,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 08:53:21,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 08:53:21,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 08:53:21,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 08:53:21,593 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 08:53:21,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:21,594 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 08:53:21,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:53:21,594 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 08:53:21,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 08:53:21,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:21,597 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 08:53:21,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:53:21,597 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:21,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:21,598 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 08:53:21,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:21,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958545562] [2020-09-25 08:53:21,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:21,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:21,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 08:53:21,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:21,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 08:53:21,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:21,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:21,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:21,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:21,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:21,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:21,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:21,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:21,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:21,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:21,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:53:21,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:21,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:21,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:21,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:21,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:53:21,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:21,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:21,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:21,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:21,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 08:53:21,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:21,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:21,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:21,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:21,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:21,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:53:21,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958545562] [2020-09-25 08:53:21,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:53:21,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:53:21,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462295300] [2020-09-25 08:53:21,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:53:21,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:21,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:53:21,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:53:21,833 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 08:53:21,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:21,932 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 08:53:21,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:53:21,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 08:53:21,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:21,935 INFO L225 Difference]: With dead ends: 50 [2020-09-25 08:53:21,935 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 08:53:21,937 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 08:53:21,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 08:53:21,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 08:53:21,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 08:53:21,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 08:53:21,946 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 08:53:21,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:21,947 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 08:53:21,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:53:21,947 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 08:53:21,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 08:53:21,949 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:21,949 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 08:53:21,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:53:21,950 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:21,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:21,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 08:53:21,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:21,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674294889] [2020-09-25 08:53:21,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:21,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:22,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 08:53:22,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:53:22,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-09-25 08:53:22,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:22,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:53:22,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:53:22,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:22,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:22,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:22,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:22,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:53:22,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:22,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:22,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:22,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:22,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:22,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:22,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:22,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:22,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:53:22,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:53:22,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-09-25 08:53:22,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:22,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:53:22,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:22,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:22,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:22,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:22,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:22,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:53:22,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:22,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:22,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:22,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:22,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:22,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:22,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:22,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:22,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:22,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:22,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:53:22,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:22,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:22,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:22,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:22,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:22,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:22,972 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 08:53:22,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674294889] [2020-09-25 08:53:22,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:53:22,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 08:53:22,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657053382] [2020-09-25 08:53:22,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:53:22,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:22,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:53:22,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:53:22,979 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 08:53:23,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:23,103 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 08:53:23,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:53:23,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 08:53:23,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:23,106 INFO L225 Difference]: With dead ends: 58 [2020-09-25 08:53:23,106 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 08:53:23,107 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 08:53:23,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 08:53:23,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 08:53:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 08:53:23,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 08:53:23,118 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 08:53:23,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:23,118 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 08:53:23,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:53:23,119 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 08:53:23,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 08:53:23,121 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:23,121 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 08:53:23,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:53:23,121 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:23,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:23,122 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 08:53:23,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:23,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622713095] [2020-09-25 08:53:23,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:23,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:23,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:53:23,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:53:23,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-09-25 08:53:23,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:23,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:23,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:23,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:23,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:53:23,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:23,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:23,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:23,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:23,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:23,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:53:23,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:23,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:23,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:23,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:23,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:23,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:53:23,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:23,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:24,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:24,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:53:24,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:53:24,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-09-25 08:53:24,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:24,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:24,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:24,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:24,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:53:24,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:24,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:24,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:24,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:24,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:24,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:24,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 08:53:24,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:24,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:24,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:24,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:24,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:53:24,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:24,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:24,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:24,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:24,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:24,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:24,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:53:24,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:24,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:24,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:24,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:24,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:24,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:24,172 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 08:53:24,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622713095] [2020-09-25 08:53:24,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:24,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:53:24,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888665139] [2020-09-25 08:53:24,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:53:24,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:24,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:53:24,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:53:24,175 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 08:53:24,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:24,288 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 08:53:24,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:53:24,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 08:53:24,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:24,291 INFO L225 Difference]: With dead ends: 110 [2020-09-25 08:53:24,291 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 08:53:24,293 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 08:53:24,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 08:53:24,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 08:53:24,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 08:53:24,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 08:53:24,305 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 08:53:24,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:24,305 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 08:53:24,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:53:24,305 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 08:53:24,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 08:53:24,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:24,310 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 08:53:24,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:53:24,310 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:24,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:24,311 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 08:53:24,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:24,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455822187] [2020-09-25 08:53:24,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:24,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:24,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:24,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:24,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:24,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:24,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:24,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:29,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:29,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 08:53:29,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:53:29,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 08:53:29,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:29,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:29,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 08:53:29,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:29,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:29,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:29,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:29,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:29,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:29,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:53:29,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:29,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:29,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:29,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:29,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:29,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:29,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:29,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:29,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:29,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:29,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:29,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:29,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:30,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:34,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:34,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 08:53:34,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:53:34,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 08:53:34,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:34,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:34,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 08:53:34,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:34,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:34,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:34,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:34,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:34,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:53:34,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:34,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 08:53:34,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:34,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:34,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:34,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:34,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:53:34,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:34,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:34,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:34,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:34,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:34,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:34,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:53:34,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:34,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:34,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:34,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:34,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:34,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:34,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:34,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:34,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:34,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:34,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:34,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:53:34,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:34,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:34,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:34,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:34,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 08:53:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:34,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:34,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:34,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:34,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:34,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 08:53:34,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:34,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:34,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:34,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:34,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:53:34,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:53:34,575 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 08:53:34,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455822187] [2020-09-25 08:53:34,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:34,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:53:34,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660701906] [2020-09-25 08:53:34,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:53:34,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:34,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:53:34,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:53:34,579 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 7 states. [2020-09-25 08:53:34,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:34,714 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2020-09-25 08:53:34,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:53:34,715 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 08:53:34,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:34,720 INFO L225 Difference]: With dead ends: 66 [2020-09-25 08:53:34,720 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 08:53:34,721 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 08:53:34,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 08:53:34,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 08:53:34,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 08:53:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 08:53:34,738 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 51 [2020-09-25 08:53:34,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:34,741 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 08:53:34,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:53:34,741 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 08:53:34,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 08:53:34,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:34,748 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 08:53:34,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:53:34,748 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:34,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:34,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 08:53:34,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:34,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972757662] [2020-09-25 08:53:34,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:34,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:34,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:34,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:34,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:39,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:39,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 08:53:39,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 08:53:39,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 08:53:39,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:39,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:39,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:39,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:39,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 08:53:39,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:39,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:39,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:39,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:39,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:39,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:39,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:39,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:39,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:39,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:39,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:39,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:39,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:39,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:39,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:39,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:39,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:40,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:40,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:44,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:44,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:44,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 08:53:44,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 08:53:44,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:53:44,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:44,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:44,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:44,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:44,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 08:53:44,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:44,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:44,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:44,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:44,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:44,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:53:44,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:44,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 08:53:44,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:44,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:44,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:44,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:44,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:53:44,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:44,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:44,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:44,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:44,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:44,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:44,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:53:44,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:44,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:44,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:44,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:44,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:44,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:44,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:44,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:44,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:44,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:53:44,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:44,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:44,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:44,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 08:53:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:44,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:44,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:45,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:45,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:53:45,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:45,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 08:53:45,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:45,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:45,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:45,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:45,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:53:45,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:45,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:45,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:45,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:45,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:45,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:45,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:53:45,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:45,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:45,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:45,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:45,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:45,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:45,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:45,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:45,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:53:45,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:45,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:45,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:45,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:45,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:45,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 08:53:45,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972757662] [2020-09-25 08:53:45,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:45,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 08:53:45,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173671472] [2020-09-25 08:53:45,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:53:45,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:45,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:53:45,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:53:45,058 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 8 states. [2020-09-25 08:53:45,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:45,206 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2020-09-25 08:53:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:53:45,207 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-09-25 08:53:45,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:45,210 INFO L225 Difference]: With dead ends: 84 [2020-09-25 08:53:45,210 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 08:53:45,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:53:45,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 08:53:45,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 64. [2020-09-25 08:53:45,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 08:53:45,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 85 transitions. [2020-09-25 08:53:45,230 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 85 transitions. Word has length 67 [2020-09-25 08:53:45,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:45,230 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 85 transitions. [2020-09-25 08:53:45,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:53:45,231 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 85 transitions. [2020-09-25 08:53:45,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 08:53:45,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:45,233 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:45,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:53:45,233 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:45,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:45,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1454118782, now seen corresponding path program 1 times [2020-09-25 08:53:45,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:45,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527371814] [2020-09-25 08:53:45,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:45,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:45,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:45,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:45,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:45,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:45,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:45,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:45,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:49,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:49,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:50,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:50,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 08:53:50,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 08:53:50,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:53:50,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:50,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 08:53:50,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:50,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:50,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:50,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:50,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:50,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:50,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:50,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:50,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:50,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:50,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:50,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:50,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:50,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:50,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:50,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:50,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:50,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:50,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:50,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:50,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:50,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:50,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:55,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 08:53:55,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 08:53:55,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:53:55,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:55,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:55,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:55,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:55,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 08:53:55,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:55,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:55,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:55,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:53:55,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:55,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 08:53:55,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:55,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:55,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:55,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:55,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:53:55,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:55,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:55,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:55,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:55,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:55,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:53:55,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:55,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:55,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:55,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:55,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:55,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:55,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:55,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:55,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:55,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:55,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:53:55,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:55,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:55,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:55,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:55,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:55,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:53:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:55,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:55,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:53:55,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:53:55,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 08:53:55,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:55,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:55,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:55,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:55,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:53:55,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:55,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:55,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:55,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:55,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:55,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:53:55,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:55,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:55,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:55,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:55,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:55,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:55,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:55,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:55,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:55,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:55,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:53:55,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:55,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:55,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:55,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:55,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:55,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 08:53:55,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527371814] [2020-09-25 08:53:55,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:55,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 08:53:55,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070889060] [2020-09-25 08:53:55,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:53:55,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:55,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:53:55,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:53:55,555 INFO L87 Difference]: Start difference. First operand 64 states and 85 transitions. Second operand 8 states. [2020-09-25 08:53:55,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:55,692 INFO L93 Difference]: Finished difference Result 84 states and 115 transitions. [2020-09-25 08:53:55,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:53:55,692 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-09-25 08:53:55,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:55,694 INFO L225 Difference]: With dead ends: 84 [2020-09-25 08:53:55,694 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 08:53:55,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:53:55,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 08:53:55,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 62. [2020-09-25 08:53:55,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 08:53:55,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2020-09-25 08:53:55,708 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 68 [2020-09-25 08:53:55,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:55,709 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2020-09-25 08:53:55,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:53:55,709 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2020-09-25 08:53:55,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 08:53:55,710 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:55,711 INFO L422 BasicCegarLoop]: trace histogram [5, 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] [2020-09-25 08:53:55,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:53:55,711 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:55,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:55,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-25 08:53:55,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:55,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055443497] [2020-09-25 08:53:55,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:55,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:56,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:56,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:00,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 08:54:00,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 08:54:00,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 08:54:00,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:00,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:00,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:54:00,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:54:00,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 08:54:00,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:00,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:00,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:00,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:00,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:00,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:00,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:00,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:00,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:00,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:00,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:01,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:01,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:01,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:01,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:02,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:02,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:05,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:05,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 08:54:05,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 08:54:05,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:54:05,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:05,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:05,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:54:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:54:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 08:54:05,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:05,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:05,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:05,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:05,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:05,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:06,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:54:06,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:54:06,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-09-25 08:54:06,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:06,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:06,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:06,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:06,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 08:54:06,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:06,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:06,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:06,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:06,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:06,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:54:06,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:06,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:06,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:06,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:06,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:54:06,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:06,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:06,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:06,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:06,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:06,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:54:06,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:06,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:06,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:06,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:06,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:06,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:06,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 08:54:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:06,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:06,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:54:06,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:54:06,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 08:54:06,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:06,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:54:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:54:06,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:06,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:06,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:06,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:06,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:54:06,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:06,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:06,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:06,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:06,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:06,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:54:06,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 08:54:06,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:06,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:06,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:06,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:06,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:54:06,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:06,417 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 25 proven. 23 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 08:54:06,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055443497] [2020-09-25 08:54:06,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:06,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 08:54:06,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232519567] [2020-09-25 08:54:06,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 08:54:06,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:06,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 08:54:06,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:54:06,419 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand 12 states. [2020-09-25 08:54:06,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:06,835 INFO L93 Difference]: Finished difference Result 145 states and 214 transitions. [2020-09-25 08:54:06,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:54:06,837 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-09-25 08:54:06,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:06,838 INFO L225 Difference]: With dead ends: 145 [2020-09-25 08:54:06,838 INFO L226 Difference]: Without dead ends: 89 [2020-09-25 08:54:06,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-09-25 08:54:06,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-25 08:54:06,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2020-09-25 08:54:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 08:54:06,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 106 transitions. [2020-09-25 08:54:06,864 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 106 transitions. Word has length 71 [2020-09-25 08:54:06,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:06,864 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 106 transitions. [2020-09-25 08:54:06,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 08:54:06,865 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 106 transitions. [2020-09-25 08:54:06,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-25 08:54:06,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:06,871 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:54:06,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:54:06,872 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:06,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:06,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1801853252, now seen corresponding path program 1 times [2020-09-25 08:54:06,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:06,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693170291] [2020-09-25 08:54:06,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:06,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:07,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:07,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:07,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:07,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:08,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:08,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:08,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:08,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:11,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:11,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 08:54:11,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 08:54:11,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 08:54:11,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:11,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:11,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:54:11,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:54:11,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 08:54:11,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:11,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:11,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:11,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:11,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:11,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:11,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:11,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:11,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:11,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:11,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:11,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:11,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:11,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:11,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:11,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:11,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:12,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:12,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:12,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:12,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:12,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:12,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:12,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:12,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking...