/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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_15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:59:33,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:59:33,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:59:33,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:59:33,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:59:33,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:59:33,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:59:33,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:59:33,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:59:33,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:59:33,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:59:33,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:59:33,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:59:33,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:59:33,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:59:33,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:59:33,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:59:33,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:59:33,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:59:33,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:59:33,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:59:33,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:59:33,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:59:33,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:59:33,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:59:33,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:59:33,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:59:33,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:59:33,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:59:33,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:59:33,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:59:33,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:59:33,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:59:33,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:59:33,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:59:33,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:59:33,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:59:33,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:59:33,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:59:33,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:59:33,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:59:33,153 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 09:59:33,185 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:59:33,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:59:33,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:59:33,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:59:33,189 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:59:33,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:59:33,190 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:59:33,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:59:33,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:59:33,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:59:33,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:59:33,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:59:33,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:59:33,192 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:59:33,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:59:33,192 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:59:33,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:59:33,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:59:33,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:59:33,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:59:33,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:59:33,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:59:33,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:59:33,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:59:33,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:59:33,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:59:33,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:59:33,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:59:33,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:59:33,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 09:59:33,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:59:33,693 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:59:33,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:59:33,700 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:59:33,700 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:59:33,701 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_15-2.c [2020-09-25 09:59:33,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d7d3e678/d7c35cc174804fb2ae978ffd6deb35f7/FLAGd5aa89003 [2020-09-25 09:59:34,370 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:59:34,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_15-2.c [2020-09-25 09:59:34,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d7d3e678/d7c35cc174804fb2ae978ffd6deb35f7/FLAGd5aa89003 [2020-09-25 09:59:34,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d7d3e678/d7c35cc174804fb2ae978ffd6deb35f7 [2020-09-25 09:59:34,724 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:59:34,731 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:59:34,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:59:34,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:59:34,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:59:34,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:59:34" (1/1) ... [2020-09-25 09:59:34,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d8eef18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:34, skipping insertion in model container [2020-09-25 09:59:34,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:59:34" (1/1) ... [2020-09-25 09:59:34,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:59:34,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:59:34,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:59:34,998 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:59:35,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:59:35,031 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:59:35,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:35 WrapperNode [2020-09-25 09:59:35,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:59:35,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:59:35,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:59:35,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:59:35,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:35" (1/1) ... [2020-09-25 09:59:35,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:35" (1/1) ... [2020-09-25 09:59:35,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:35" (1/1) ... [2020-09-25 09:59:35,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:35" (1/1) ... [2020-09-25 09:59:35,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:35" (1/1) ... [2020-09-25 09:59:35,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:35" (1/1) ... [2020-09-25 09:59:35,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:35" (1/1) ... [2020-09-25 09:59:35,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:59:35,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:59:35,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:59:35,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:59:35,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:35" (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 09:59:35,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:59:35,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:59:35,224 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 09:59:35,224 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:59:35,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:59:35,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:59:35,224 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 09:59:35,224 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:59:35,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:59:35,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:59:35,436 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:59:35,436 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 09:59:35,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:59:35 BoogieIcfgContainer [2020-09-25 09:59:35,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:59:35,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:59:35,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:59:35,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:59:35,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:59:34" (1/3) ... [2020-09-25 09:59:35,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121eebdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:59:35, skipping insertion in model container [2020-09-25 09:59:35,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:35" (2/3) ... [2020-09-25 09:59:35,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121eebdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:59:35, skipping insertion in model container [2020-09-25 09:59:35,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:59:35" (3/3) ... [2020-09-25 09:59:35,453 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_15-2.c [2020-09-25 09:59:35,466 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:59:35,477 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:59:35,531 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:59:35,602 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:59:35,603 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:59:35,603 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:59:35,603 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:59:35,603 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:59:35,603 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:59:35,604 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:59:35,604 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:59:35,626 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 09:59:35,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 09:59:35,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:35,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:35,637 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:35,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:35,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 09:59:35,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:35,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181126607] [2020-09-25 09:59:35,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:35,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:35,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:35,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:35,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:35,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:59:35,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-25 09:59:35,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:35,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:35,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:35,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 09:59:35,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:35,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:59:36,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:36,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:36,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:36,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:36,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:36,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:59:36,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:36,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:36,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:36,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:36,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:36,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:59:36,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 09:59:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:36,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:36,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:36,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:36,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:36,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:59:36,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:36,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:36,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:59:36,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:36,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:59:36,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:36,140 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 09:59:36,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181126607] [2020-09-25 09:59:36,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:59:36,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:59:36,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396960896] [2020-09-25 09:59:36,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:59:36,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:36,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:59:36,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:59:36,174 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 09:59:36,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:36,288 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 09:59:36,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:59:36,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 09:59:36,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:36,312 INFO L225 Difference]: With dead ends: 44 [2020-09-25 09:59:36,312 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 09:59:36,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:59:36,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 09:59:36,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 09:59:36,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 09:59:36,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 09:59:36,382 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 09:59:36,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:36,383 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 09:59:36,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:59:36,383 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 09:59:36,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 09:59:36,386 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:36,386 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 09:59:36,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:59:36,387 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:36,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:36,387 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 09:59:36,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:36,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701156144] [2020-09-25 09:59:36,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:36,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:36,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:36,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:36,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 09:59:36,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:59:36,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 09:59:36,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:36,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:59:36,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:36,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:36,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:36,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:36,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:36,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:36,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:36,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:59:36,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:36,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:36,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:36,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 09:59:36,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 09:59:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:36,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:36,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:36,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:36,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:36,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 09:59:36,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:36,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:36,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:36,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:59:36,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:59:36,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:36,715 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 09:59:36,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701156144] [2020-09-25 09:59:36,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:59:36,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:59:36,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674828880] [2020-09-25 09:59:36,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:59:36,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:36,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:59:36,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:59:36,728 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 09:59:36,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:36,802 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 09:59:36,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:59:36,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 09:59:36,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:36,805 INFO L225 Difference]: With dead ends: 36 [2020-09-25 09:59:36,805 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 09:59:36,806 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 09:59:36,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 09:59:36,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 09:59:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 09:59:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 09:59:36,815 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 09:59:36,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:36,816 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 09:59:36,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:59:36,816 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 09:59:36,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 09:59:36,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:36,818 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:36,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:59:36,819 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:36,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:36,819 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 09:59:36,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:36,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350286008] [2020-09-25 09:59:36,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:36,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:36,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:36,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:37,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:38,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:38,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 09:59:38,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:59:38,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2015 [2020-09-25 09:59:38,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:38,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:38,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:59:38,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:59:38,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 09:59:38,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:38,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:38,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:38,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:38,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:38,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:38,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:38,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:38,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:38,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:38,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:38,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:38,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:38,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 09:59:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:38,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:38,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:38,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:39,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:39,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 09:59:39,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:59:39,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 09:59:39,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:39,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:39,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:59:39,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:59:39,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:59:39,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:39,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:39,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:39,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:39,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:39,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:39,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:59:39,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:39,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:39,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:39,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:39,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:39,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:39,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:59:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:39,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:39,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:39,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:39,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:39,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:59:39,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:39,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:59:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:59:39,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:39,183 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 09:59:39,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350286008] [2020-09-25 09:59:39,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:39,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:59:39,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068286182] [2020-09-25 09:59:39,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:59:39,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:39,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:59:39,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:59:39,187 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 09:59:39,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:39,288 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-25 09:59:39,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:59:39,288 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 09:59:39,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:39,291 INFO L225 Difference]: With dead ends: 44 [2020-09-25 09:59:39,291 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 09:59:39,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:59:39,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 09:59:39,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-25 09:59:39,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 09:59:39,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-25 09:59:39,303 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-25 09:59:39,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:39,303 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-25 09:59:39,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:59:39,304 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-25 09:59:39,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 09:59:39,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:39,306 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:39,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:59:39,307 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:39,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:39,307 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 09:59:39,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:39,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635096549] [2020-09-25 09:59:39,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:39,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:39,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:39,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:39,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:39,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:41,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:41,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 09:59:41,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:59:41,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1812 [2020-09-25 09:59:41,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:41,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:41,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:59:41,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:59:41,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 09:59:41,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:41,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:41,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:41,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:41,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:41,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:41,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:59:41,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:41,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:41,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:41,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:41,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:41,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:41,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 09:59:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:41,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:41,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:41,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:41,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:41,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:41,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:59:41,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:59:41,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-09-25 09:59:41,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:41,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:41,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:59:41,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:59:41,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:59:41,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:41,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:41,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:41,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:41,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:41,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:41,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:59:41,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:41,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:59:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:59:41,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:41,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:59:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:41,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:41,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:41,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:41,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:41,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:59:41,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:41,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:41,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:41,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:41,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:59:41,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 09:59:41,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635096549] [2020-09-25 09:59:41,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:41,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:59:41,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674527398] [2020-09-25 09:59:41,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:59:41,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:41,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:59:41,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:59:41,762 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 7 states. [2020-09-25 09:59:41,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:41,920 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-09-25 09:59:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:59:41,921 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 09:59:41,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:41,924 INFO L225 Difference]: With dead ends: 52 [2020-09-25 09:59:41,924 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 09:59:41,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:59:41,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 09:59:41,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2020-09-25 09:59:41,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 09:59:41,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-25 09:59:41,936 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 35 [2020-09-25 09:59:41,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:41,937 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-25 09:59:41,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:59:41,937 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-25 09:59:41,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 09:59:41,941 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:41,941 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:41,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:59:41,942 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:41,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:41,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1767822624, now seen corresponding path program 2 times [2020-09-25 09:59:41,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:41,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097408208] [2020-09-25 09:59:41,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:41,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:41,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:42,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:42,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:42,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:42,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:42,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:42,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:46,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:46,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-25 09:59:46,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:59:46,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 09:59:46,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:46,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:46,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:59:46,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:59:46,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 09:59:46,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:46,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:46,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:46,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:46,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:46,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:46,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:46,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:46,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:46,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:46,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:46,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 09:59:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:47,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:47,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:47,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:47,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:47,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:47,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:48,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:48,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:52,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:52,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 09:59:52,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 09:59:52,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 09:59:52,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:52,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:52,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 09:59:52,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 09:59:52,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 09:59:52,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:52,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:52,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:52,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:52,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:52,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 09:59:52,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:59:52,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 09:59:52,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:52,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:52,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:59:52,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:52,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 09:59:52,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:52,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:52,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:52,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:52,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:52,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:52,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:59:52,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:52,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:52,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:52,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:52,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:52,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:52,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:59:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:52,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:52,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:52,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:52,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:52,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:59:52,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:52,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:52,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:52,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:52,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:52,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:52,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 09:59:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:52,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:52,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:52,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:52,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:52,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:52,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:53,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:53,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 09:59:53,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:59:53,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1078 [2020-09-25 09:59:53,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:53,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:53,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:59:53,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:59:53,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 09:59:53,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:53,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:53,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:53,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:53,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:53,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:53,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 09:59:53,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:59:53,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 09:59:53,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:53,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:53,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:59:53,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:53,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 09:59:53,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:53,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:53,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:53,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:53,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:53,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:53,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:59:53,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:53,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:53,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:53,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:59:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:53,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:53,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:53,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:53,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:53,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:59:53,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:53,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:53,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:53,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 09:59:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:53,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:53,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:53,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:53,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:53,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:59:53,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:53,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:59:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:59:53,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 90 proven. 46 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-09-25 09:59:53,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097408208] [2020-09-25 09:59:53,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:53,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 09:59:53,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527301154] [2020-09-25 09:59:53,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 09:59:53,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:53,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 09:59:53,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:59:53,849 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 13 states. [2020-09-25 09:59:54,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:54,041 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2020-09-25 09:59:54,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:59:54,041 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 84 [2020-09-25 09:59:54,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:54,043 INFO L225 Difference]: With dead ends: 74 [2020-09-25 09:59:54,043 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 09:59:54,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:59:54,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 09:59:54,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-09-25 09:59:54,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 09:59:54,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-09-25 09:59:54,053 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 84 [2020-09-25 09:59:54,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:54,054 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-09-25 09:59:54,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 09:59:54,054 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-09-25 09:59:54,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 09:59:54,056 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:54,056 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:54,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:59:54,057 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:54,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:54,057 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 1 times [2020-09-25 09:59:54,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:54,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180321611] [2020-09-25 09:59:54,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:54,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:54,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:54,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:54,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:54,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:54,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:54,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:54,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:57,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:57,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:59,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:59,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 09:59:59,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:59:59,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:59:59,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:59,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:59,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:59:59,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:59:59,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 09:59:59,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:59,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:59,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:59,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:59,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:59,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:59,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:59,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:59,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:59,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:59,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:59,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:59,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:59,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 09:59:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:59,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:59,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:59,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:59,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:59,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:59,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:59,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:59,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:59,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:00,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:00,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:00,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:01,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:01,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:01,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:04,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:04,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 10:00:04,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 10:00:04,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:00:04,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:04,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:04,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:00:04,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:00:04,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 10:00:04,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:04,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:04,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:04,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:04,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:04,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:00:04,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:04,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 10:00:04,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:04,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:04,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:04,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:04,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:00:04,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:04,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:04,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:04,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:04,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:04,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:04,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:00:04,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:04,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:04,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:04,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:04,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:00:04,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:04,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:00:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:04,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:04,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:04,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:04,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:04,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:00:04,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:04,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:04,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:04,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:04,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:04,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:04,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:00:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:04,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:04,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:04,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:04,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:04,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:04,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:07,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:07,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 10:00:07,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:00:07,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3051 [2020-09-25 10:00:07,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:07,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:07,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:07,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:07,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 10:00:07,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:07,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:07,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:07,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:07,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:00:07,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:07,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:00:07,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:07,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:07,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:07,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:07,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:00:07,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:07,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:07,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:07,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:07,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:07,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:07,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:00:07,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:07,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:07,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:07,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:07,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:00:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:07,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:07,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:07,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:07,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:07,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:07,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:07,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:07,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:07,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:07,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:07,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:00:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:07,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:07,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:07,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:07,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:07,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:00:07,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:07,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:07,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:07,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:07,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:07,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 60 proven. 70 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-09-25 10:00:07,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180321611] [2020-09-25 10:00:07,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:00:07,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:00:07,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611669492] [2020-09-25 10:00:07,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:00:07,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:07,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:00:07,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:00:07,595 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 9 states. [2020-09-25 10:00:07,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:07,801 INFO L93 Difference]: Finished difference Result 85 states and 118 transitions. [2020-09-25 10:00:07,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:00:07,802 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-25 10:00:07,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:07,803 INFO L225 Difference]: With dead ends: 85 [2020-09-25 10:00:07,803 INFO L226 Difference]: Without dead ends: 49 [2020-09-25 10:00:07,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:00:07,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-25 10:00:07,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-09-25 10:00:07,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 10:00:07,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-09-25 10:00:07,813 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 87 [2020-09-25 10:00:07,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:07,814 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-09-25 10:00:07,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:00:07,814 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-09-25 10:00:07,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 10:00:07,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:07,816 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:00:07,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:00:07,817 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:07,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:07,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 2 times [2020-09-25 10:00:07,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:07,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076215862] [2020-09-25 10:00:07,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:07,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:07,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:07,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:08,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:08,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:08,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:08,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:08,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:08,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:09,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:09,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:12,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:12,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 10:00:12,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 10:00:12,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:00:12,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:12,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:00:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:00:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 10:00:12,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:12,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:12,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:12,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:12,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:12,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:12,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:00:12,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:12,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:12,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:12,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:12,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:12,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:12,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:13,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:13,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:13,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:14,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:14,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:14,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:14,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:14,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:14,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:14,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:14,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:14,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:15,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:15,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:15,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:15,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:17,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:17,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 10:00:17,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-25 10:00:17,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 10:00:17,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:17,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:17,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:00:17,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:00:17,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 10:00:17,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:17,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:17,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:17,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:17,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:19,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:19,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 10:00:19,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:00:19,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1137 [2020-09-25 10:00:19,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:19,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:19,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:19,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:19,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 10:00:19,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:19,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:19,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:19,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:19,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:00:19,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:19,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:00:19,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:19,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:00:19,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:19,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:19,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:19,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:19,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:19,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:19,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:00:19,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:19,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:19,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:19,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:00:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:19,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:19,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:19,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:19,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:19,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:19,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:19,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:19,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:19,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:19,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:19,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:19,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:00:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:19,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:19,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:19,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:19,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:19,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:00:19,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:19,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:19,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:19,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:19,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:00:19,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:19,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 10:00:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:19,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:19,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:19,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:19,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:19,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:20,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:20,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:20,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:20,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:21,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:24,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:24,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 10:00:24,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 10:00:24,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:00:24,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:24,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:24,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:24,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:24,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 10:00:24,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:24,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:24,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:24,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:24,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 10:00:24,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:24,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:00:24,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:24,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 10:00:24,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:24,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:24,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:24,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:24,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:00:24,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:24,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:00:24,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:24,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:24,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:24,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:24,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:24,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:24,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:24,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:24,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:24,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:24,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:24,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:24,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:24,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:24,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:24,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:24,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:00:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:24,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:24,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:24,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:24,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:24,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:24,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:24,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:24,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:24,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:24,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:24,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:24,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:00:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:24,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:24,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:24,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:24,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:24,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:24,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:24,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:24,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:24,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 10:00:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:24,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:24,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:24,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:24,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:24,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:24,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:00:24,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:24,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:24,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:24,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:24,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:00:24,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:24,333 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 157 proven. 106 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-09-25 10:00:24,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076215862] [2020-09-25 10:00:24,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:00:24,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:00:24,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286478760] [2020-09-25 10:00:24,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:00:24,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:24,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:00:24,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:00:24,336 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 10 states. [2020-09-25 10:00:24,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:24,694 INFO L93 Difference]: Finished difference Result 110 states and 147 transitions. [2020-09-25 10:00:24,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:00:24,695 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 123 [2020-09-25 10:00:24,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:24,700 INFO L225 Difference]: With dead ends: 110 [2020-09-25 10:00:24,700 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 10:00:24,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:00:24,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 10:00:24,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2020-09-25 10:00:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 10:00:24,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 72 transitions. [2020-09-25 10:00:24,722 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 72 transitions. Word has length 123 [2020-09-25 10:00:24,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:24,723 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 72 transitions. [2020-09-25 10:00:24,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:00:24,723 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2020-09-25 10:00:24,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 10:00:24,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:24,733 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:00:24,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:00:24,733 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:24,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:24,734 INFO L82 PathProgramCache]: Analyzing trace with hash 866676589, now seen corresponding path program 3 times [2020-09-25 10:00:24,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:24,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32173390] [2020-09-25 10:00:24,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:24,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:24,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:24,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:24,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:27,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking...