/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 SequenceOfStatements --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/standard_two_index_09.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:07:43,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:07:43,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:07:43,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:07:43,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:07:43,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:07:43,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:07:43,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:07:43,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:07:43,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:07:43,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:07:43,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:07:43,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:07:43,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:07:43,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:07:43,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:07:43,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:07:43,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:07:43,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:07:43,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:07:43,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:07:43,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:07:43,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:07:43,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:07:43,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:07:43,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:07:43,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:07:43,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:07:43,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:07:43,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:07:43,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:07:43,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:07:43,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:07:43,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:07:43,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:07:43,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:07:43,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:07:43,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:07:43,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:07:43,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:07:43,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:07:43,252 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 [2020-10-14 18:07:43,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:07:43,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:07:43,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:07:43,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:07:43,275 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:07:43,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:07:43,275 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:07:43,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:07:43,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:07:43,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:07:43,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:07:43,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:07:43,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:07:43,277 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:07:43,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:07:43,277 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:07:43,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:07:43,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:07:43,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:07:43,278 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:07:43,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:07:43,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:07:43,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:07:43,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:07:43,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:07:43,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:07:43,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:07:43,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:07:43,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:07:43,280 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 -> SequenceOfStatements 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:07:43,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:07:43,613 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:07:43,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:07:43,618 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:07:43,618 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:07:43,619 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_two_index_09.i [2020-10-14 18:07:43,696 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6df7a3f34/c942e611fa664f529e59b241d445fcad/FLAGf01225beb [2020-10-14 18:07:44,157 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:07:44,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_two_index_09.i [2020-10-14 18:07:44,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6df7a3f34/c942e611fa664f529e59b241d445fcad/FLAGf01225beb [2020-10-14 18:07:44,537 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6df7a3f34/c942e611fa664f529e59b241d445fcad [2020-10-14 18:07:44,545 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:07:44,547 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:07:44,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:07:44,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:07:44,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:07:44,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:07:44" (1/1) ... [2020-10-14 18:07:44,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:07:44, skipping insertion in model container [2020-10-14 18:07:44,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:07:44" (1/1) ... [2020-10-14 18:07:44,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:07:44,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:07:44,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:07:44,768 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:07:44,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:07:44,815 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:07:44,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:07:44 WrapperNode [2020-10-14 18:07:44,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:07:44,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:07:44,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:07:44,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:07:44,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:07:44" (1/1) ... [2020-10-14 18:07:44,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:07:44" (1/1) ... [2020-10-14 18:07:44,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:07:44" (1/1) ... [2020-10-14 18:07:44,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:07:44" (1/1) ... [2020-10-14 18:07:45,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:07:44" (1/1) ... [2020-10-14 18:07:45,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:07:44" (1/1) ... [2020-10-14 18:07:45,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:07:44" (1/1) ... [2020-10-14 18:07:45,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:07:45,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:07:45,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:07:45,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:07:45,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:07:44" (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 [2020-10-14 18:07:45,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:07:45,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:07:45,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:07:45,078 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:07:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:07:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:07:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:07:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:07:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 18:07:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:07:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:07:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:07:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:07:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:07:45,309 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:07:45,309 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 18:07:45,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:07:45 BoogieIcfgContainer [2020-10-14 18:07:45,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:07:45,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:07:45,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:07:45,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:07:45,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:07:44" (1/3) ... [2020-10-14 18:07:45,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3ab515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:07:45, skipping insertion in model container [2020-10-14 18:07:45,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:07:44" (2/3) ... [2020-10-14 18:07:45,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3ab515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:07:45, skipping insertion in model container [2020-10-14 18:07:45,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:07:45" (3/3) ... [2020-10-14 18:07:45,322 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_two_index_09.i [2020-10-14 18:07:45,335 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:07:45,342 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:07:45,361 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:07:45,404 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:07:45,404 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:07:45,404 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:07:45,405 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:07:45,406 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:07:45,406 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:07:45,406 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:07:45,406 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:07:45,453 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-14 18:07:45,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 18:07:45,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:45,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:45,472 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:45,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:45,480 INFO L82 PathProgramCache]: Analyzing trace with hash -2029643862, now seen corresponding path program 1 times [2020-10-14 18:07:45,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:45,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786031564] [2020-10-14 18:07:45,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 18:07:45,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:07:45,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-14 18:07:45,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:07:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 18:07:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 18:07:45,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 18:07:45,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:45,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:07:45,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:07:45,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786031564] [2020-10-14 18:07:45,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:07:45,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 18:07:45,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885085336] [2020-10-14 18:07:45,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 18:07:45,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:46,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 18:07:46,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:07:46,015 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-10-14 18:07:46,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:46,145 INFO L93 Difference]: Finished difference Result 46 states and 65 transitions. [2020-10-14 18:07:46,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 18:07:46,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-14 18:07:46,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:46,158 INFO L225 Difference]: With dead ends: 46 [2020-10-14 18:07:46,158 INFO L226 Difference]: Without dead ends: 24 [2020-10-14 18:07:46,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:07:46,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-14 18:07:46,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2020-10-14 18:07:46,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 18:07:46,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-14 18:07:46,207 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 15 [2020-10-14 18:07:46,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:46,208 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-14 18:07:46,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 18:07:46,208 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-14 18:07:46,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 18:07:46,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:46,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:46,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:07:46,210 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:46,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:46,211 INFO L82 PathProgramCache]: Analyzing trace with hash -59429947, now seen corresponding path program 1 times [2020-10-14 18:07:46,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:46,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478851561] [2020-10-14 18:07:46,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:46,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:46,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:46,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:46,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:46,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 18:07:46,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:07:46,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-10-14 18:07:46,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:46,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:46,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:07:46,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:07:46,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 18:07:46,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:47,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:47,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:47,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:47,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:47,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:47,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:07:47,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:47,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:47,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:47,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:47,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:47,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:47,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 18:07:47,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478851561] [2020-10-14 18:07:47,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:47,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:07:47,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367045551] [2020-10-14 18:07:47,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:07:47,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:47,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:07:47,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:07:47,134 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 10 states. [2020-10-14 18:07:47,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:47,375 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-10-14 18:07:47,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 18:07:47,377 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-14 18:07:47,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:47,379 INFO L225 Difference]: With dead ends: 35 [2020-10-14 18:07:47,379 INFO L226 Difference]: Without dead ends: 33 [2020-10-14 18:07:47,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:07:47,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-14 18:07:47,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2020-10-14 18:07:47,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 18:07:47,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-14 18:07:47,400 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 17 [2020-10-14 18:07:47,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:47,401 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-14 18:07:47,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:07:47,401 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-14 18:07:47,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 18:07:47,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:47,403 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:47,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:07:47,405 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:47,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:47,405 INFO L82 PathProgramCache]: Analyzing trace with hash 334778154, now seen corresponding path program 2 times [2020-10-14 18:07:47,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:47,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492048397] [2020-10-14 18:07:47,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:47,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:47,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:47,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:47,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:47,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 18:07:47,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:07:47,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-10-14 18:07:47,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:47,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:07:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:07:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 18:07:47,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:48,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:48,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:48,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:48,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:48,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:48,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:07:48,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:48,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:48,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:48,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:48,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:48,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 18:07:48,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492048397] [2020-10-14 18:07:48,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:48,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:07:48,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597920304] [2020-10-14 18:07:48,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:07:48,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:48,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:07:48,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:07:48,054 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 11 states. [2020-10-14 18:07:48,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:48,362 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-10-14 18:07:48,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:07:48,363 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-10-14 18:07:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:48,364 INFO L225 Difference]: With dead ends: 47 [2020-10-14 18:07:48,364 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 18:07:48,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:07:48,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 18:07:48,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30. [2020-10-14 18:07:48,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 18:07:48,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-14 18:07:48,374 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2020-10-14 18:07:48,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:48,374 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-14 18:07:48,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:07:48,375 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-14 18:07:48,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 18:07:48,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:48,376 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:48,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:07:48,376 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:48,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:48,377 INFO L82 PathProgramCache]: Analyzing trace with hash -329672603, now seen corresponding path program 3 times [2020-10-14 18:07:48,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:48,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777736292] [2020-10-14 18:07:48,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:48,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:48,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:48,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:48,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:48,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 18:07:48,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:07:48,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-14 18:07:48,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:48,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:48,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:07:48,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:07:48,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 18:07:48,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:48,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:48,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:48,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:48,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:48,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:48,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:48,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:48,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:48,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:48,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:48,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:48,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:48,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 18:07:48,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777736292] [2020-10-14 18:07:48,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:48,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:07:48,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474189859] [2020-10-14 18:07:48,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:07:48,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:48,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:07:48,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:07:48,887 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 12 states. [2020-10-14 18:07:49,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:49,125 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-10-14 18:07:49,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 18:07:49,125 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-14 18:07:49,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:49,128 INFO L225 Difference]: With dead ends: 39 [2020-10-14 18:07:49,128 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 18:07:49,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:07:49,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 18:07:49,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2020-10-14 18:07:49,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 18:07:49,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-14 18:07:49,136 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2020-10-14 18:07:49,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:49,136 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-14 18:07:49,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:07:49,137 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-14 18:07:49,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 18:07:49,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:49,138 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:49,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 18:07:49,138 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:49,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:49,138 INFO L82 PathProgramCache]: Analyzing trace with hash 956525676, now seen corresponding path program 1 times [2020-10-14 18:07:49,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:49,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966981200] [2020-10-14 18:07:49,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:49,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:49,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:49,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:49,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 18:07:49,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:07:49,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 18:07:49,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:49,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:49,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:07:49,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 18:07:49,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 18:07:49,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:49,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:49,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:49,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:49,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:49,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:49,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:49,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:49,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:49,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:49,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:49,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:49,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:49,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 18:07:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:49,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:49,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:49,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:49,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:49,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:49,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:49,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:49,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:49,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:49,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:49,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:49,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 18:07:49,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966981200] [2020-10-14 18:07:49,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:49,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 18:07:49,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751925259] [2020-10-14 18:07:49,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:07:49,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:49,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:07:49,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:07:49,322 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2020-10-14 18:07:49,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:49,389 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-10-14 18:07:49,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:07:49,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-14 18:07:49,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:49,391 INFO L225 Difference]: With dead ends: 52 [2020-10-14 18:07:49,391 INFO L226 Difference]: Without dead ends: 33 [2020-10-14 18:07:49,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:07:49,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-14 18:07:49,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2020-10-14 18:07:49,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 18:07:49,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-14 18:07:49,399 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 24 [2020-10-14 18:07:49,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:49,399 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-14 18:07:49,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:07:49,399 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-14 18:07:49,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 18:07:49,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:49,400 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:49,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 18:07:49,401 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:49,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:49,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1983526027, now seen corresponding path program 2 times [2020-10-14 18:07:49,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:49,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653279378] [2020-10-14 18:07:49,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:49,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:49,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:49,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:50,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:50,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 18:07:50,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:07:50,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-14 18:07:50,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:50,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:50,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:07:50,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:07:50,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 18:07:50,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:07:50,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:50,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:50,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:50,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:50,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:50,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:07:50,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:50,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:50,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:50,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:50,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:50,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:50,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 18:07:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:50,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:50,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:50,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:50,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:50,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:07:50,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:50,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:50,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:07:50,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:50,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:07:50,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:50,336 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 18:07:50,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653279378] [2020-10-14 18:07:50,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:50,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:07:50,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521752279] [2020-10-14 18:07:50,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:07:50,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:50,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:07:50,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:07:50,341 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 12 states. [2020-10-14 18:07:50,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:50,666 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-10-14 18:07:50,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 18:07:50,667 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-10-14 18:07:50,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:50,669 INFO L225 Difference]: With dead ends: 46 [2020-10-14 18:07:50,669 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 18:07:50,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:07:50,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 18:07:50,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-14 18:07:50,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 18:07:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-14 18:07:50,686 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 26 [2020-10-14 18:07:50,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:50,686 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-14 18:07:50,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:07:50,687 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-14 18:07:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 18:07:50,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:50,690 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:50,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 18:07:50,691 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:50,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:50,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1287661272, now seen corresponding path program 3 times [2020-10-14 18:07:50,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:50,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722005042] [2020-10-14 18:07:50,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:50,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:50,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:51,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:51,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:51,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 18:07:51,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:07:51,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 899 [2020-10-14 18:07:51,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:51,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:07:51,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:07:51,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 18:07:51,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:51,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:51,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:51,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:51,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:51,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:51,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:07:51,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:51,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:51,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:51,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 18:07:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:51,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:51,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:51,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:51,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:51,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:07:51,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:51,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:51,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:07:51,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:51,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:07:51,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:51,835 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 18:07:51,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722005042] [2020-10-14 18:07:51,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:51,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:07:51,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585630224] [2020-10-14 18:07:51,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:07:51,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:51,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:07:51,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:07:51,840 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 13 states. [2020-10-14 18:07:52,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:52,270 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-14 18:07:52,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:07:52,271 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-10-14 18:07:52,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:52,273 INFO L225 Difference]: With dead ends: 60 [2020-10-14 18:07:52,273 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 18:07:52,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:07:52,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 18:07:52,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 41. [2020-10-14 18:07:52,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 18:07:52,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-10-14 18:07:52,292 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 27 [2020-10-14 18:07:52,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:52,294 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-10-14 18:07:52,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:07:52,295 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-10-14 18:07:52,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 18:07:52,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:52,296 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:52,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 18:07:52,297 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:52,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:52,298 INFO L82 PathProgramCache]: Analyzing trace with hash 384747563, now seen corresponding path program 4 times [2020-10-14 18:07:52,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:52,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205489668] [2020-10-14 18:07:52,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:52,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:52,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:52,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:53,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:53,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 18:07:53,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:07:53,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 850 [2020-10-14 18:07:53,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:53,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:53,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:07:53,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:07:53,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 18:07:53,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:53,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:53,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:53,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:53,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:53,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:53,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:07:53,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:53,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:53,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:53,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:53,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:53,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:53,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 18:07:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:53,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:53,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:53,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:53,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:53,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:07:53,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:53,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:53,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:07:53,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:53,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:07:53,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:53,379 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 18:07:53,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205489668] [2020-10-14 18:07:53,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:53,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:07:53,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502213140] [2020-10-14 18:07:53,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:07:53,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:53,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:07:53,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:07:53,382 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 14 states. [2020-10-14 18:07:53,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:53,666 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-14 18:07:53,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:07:53,667 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2020-10-14 18:07:53,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:53,668 INFO L225 Difference]: With dead ends: 51 [2020-10-14 18:07:53,668 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 18:07:53,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:07:53,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 18:07:53,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 36. [2020-10-14 18:07:53,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 18:07:53,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-10-14 18:07:53,676 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 28 [2020-10-14 18:07:53,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:53,676 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-10-14 18:07:53,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:07:53,677 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-10-14 18:07:53,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 18:07:53,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:53,678 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:53,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 18:07:53,678 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:53,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:53,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1993467674, now seen corresponding path program 5 times [2020-10-14 18:07:53,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:53,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563889390] [2020-10-14 18:07:53,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:53,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:53,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:54,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:54,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 18:07:54,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:07:54,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-14 18:07:54,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:54,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:07:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 18:07:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 18:07:54,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:54,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:54,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:54,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:54,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:54,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:54,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:54,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:54,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:54,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:54,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:54,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:54,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:54,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 18:07:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:54,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:54,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:54,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:54,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:54,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:07:54,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:54,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:54,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:54,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:54,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:54,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:54,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 18:07:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:54,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:54,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:54,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:54,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:54,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:54,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:54,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:54,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:54,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:54,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:54,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:54,067 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 18:07:54,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563889390] [2020-10-14 18:07:54,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:54,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 18:07:54,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792964836] [2020-10-14 18:07:54,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:07:54,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:54,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:07:54,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:07:54,075 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 6 states. [2020-10-14 18:07:54,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:54,160 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2020-10-14 18:07:54,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:07:54,161 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-14 18:07:54,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:54,162 INFO L225 Difference]: With dead ends: 69 [2020-10-14 18:07:54,163 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 18:07:54,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:07:54,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 18:07:54,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2020-10-14 18:07:54,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-14 18:07:54,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-10-14 18:07:54,175 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 33 [2020-10-14 18:07:54,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:54,175 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-10-14 18:07:54,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:07:54,176 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-10-14 18:07:54,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 18:07:54,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:54,179 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:54,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 18:07:54,179 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:54,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:54,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1901177605, now seen corresponding path program 6 times [2020-10-14 18:07:54,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:54,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534177805] [2020-10-14 18:07:54,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:54,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:54,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:54,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:55,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:55,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 18:07:55,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:07:55,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-10-14 18:07:55,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:55,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:55,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:07:55,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:07:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 18:07:55,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:55,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:55,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:55,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:55,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:55,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:55,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:07:55,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:55,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:55,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:55,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:55,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:55,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:55,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 18:07:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:55,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:55,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:55,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:55,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:55,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:07:55,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:55,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:07:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:55,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:07:55,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:55,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 18:07:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:55,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:55,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:55,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:55,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:55,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:07:55,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:55,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:55,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:07:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:07:55,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:55,517 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 18:07:55,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534177805] [2020-10-14 18:07:55,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:55,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:07:55,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485096288] [2020-10-14 18:07:55,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:07:55,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:55,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:07:55,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:07:55,520 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 14 states. [2020-10-14 18:07:55,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:55,974 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2020-10-14 18:07:55,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 18:07:55,975 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-10-14 18:07:55,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:55,976 INFO L225 Difference]: With dead ends: 58 [2020-10-14 18:07:55,977 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 18:07:55,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:07:55,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 18:07:55,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-10-14 18:07:55,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 18:07:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-10-14 18:07:55,995 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 35 [2020-10-14 18:07:55,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:55,995 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-10-14 18:07:55,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:07:55,996 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-10-14 18:07:56,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 18:07:56,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:56,002 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:56,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 18:07:56,002 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:56,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:56,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1632687254, now seen corresponding path program 7 times [2020-10-14 18:07:56,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:56,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965742384] [2020-10-14 18:07:56,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:56,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:56,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:56,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:57,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:57,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 18:07:57,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:07:57,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1414 [2020-10-14 18:07:57,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:57,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:07:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:07:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 18:07:57,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:57,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:57,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:57,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:57,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:57,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:57,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:57,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:57,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:57,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:57,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:57,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:57,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:57,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 18:07:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:57,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:57,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:57,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:57,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:57,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:07:57,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:57,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:57,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:07:57,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:57,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:07:57,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:57,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:07:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:57,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:57,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:57,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:57,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:57,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:07:57,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:57,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:57,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:07:57,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:57,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:07:57,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:57,679 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 18:07:57,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965742384] [2020-10-14 18:07:57,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:57,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:07:57,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394596915] [2020-10-14 18:07:57,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:07:57,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:57,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:07:57,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:07:57,684 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 15 states. [2020-10-14 18:07:58,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:58,333 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-14 18:07:58,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:07:58,334 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2020-10-14 18:07:58,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:58,335 INFO L225 Difference]: With dead ends: 76 [2020-10-14 18:07:58,335 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 18:07:58,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:07:58,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 18:07:58,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 53. [2020-10-14 18:07:58,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 18:07:58,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-10-14 18:07:58,354 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 36 [2020-10-14 18:07:58,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:58,355 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-10-14 18:07:58,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:07:58,355 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-10-14 18:07:58,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 18:07:58,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:58,360 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:58,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 18:07:58,361 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:58,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:58,361 INFO L82 PathProgramCache]: Analyzing trace with hash 486651813, now seen corresponding path program 8 times [2020-10-14 18:07:58,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:58,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303643124] [2020-10-14 18:07:58,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:58,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:58,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:58,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:59,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:59,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 18:07:59,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:07:59,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1378 [2020-10-14 18:07:59,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:59,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:59,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:07:59,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:07:59,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 18:07:59,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:00,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:00,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:00,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:00,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:00,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:00,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:00,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:00,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:00,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:00,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 18:08:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:00,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:00,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:00,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:00,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:00,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:08:00,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:00,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:00,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:00,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:00,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:00,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:00,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 18:08:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:00,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:00,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:00,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:00,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:00,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:08:00,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:00,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:00,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:00,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:00,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:00,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:00,056 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 18:08:00,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303643124] [2020-10-14 18:08:00,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:00,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:08:00,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891607] [2020-10-14 18:08:00,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:08:00,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:00,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:08:00,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:08:00,058 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 16 states. [2020-10-14 18:08:00,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:00,557 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-10-14 18:08:00,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 18:08:00,558 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-10-14 18:08:00,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:00,559 INFO L225 Difference]: With dead ends: 63 [2020-10-14 18:08:00,559 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 18:08:00,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:08:00,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 18:08:00,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 45. [2020-10-14 18:08:00,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 18:08:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-10-14 18:08:00,572 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 37 [2020-10-14 18:08:00,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:00,573 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-10-14 18:08:00,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:08:00,573 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-10-14 18:08:00,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 18:08:00,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:00,575 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:00,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 18:08:00,576 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:00,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:00,576 INFO L82 PathProgramCache]: Analyzing trace with hash -2110438100, now seen corresponding path program 9 times [2020-10-14 18:08:00,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:00,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013330309] [2020-10-14 18:08:00,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:00,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:00,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:01,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:01,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 18:08:01,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:08:01,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-10-14 18:08:01,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:01,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:01,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:08:01,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 18:08:01,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 18:08:01,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:01,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:01,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:01,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:01,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:01,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:01,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:01,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:01,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:01,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:01,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:01,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:01,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:01,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 18:08:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:01,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:01,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:01,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:01,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:01,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:01,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:01,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:01,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:01,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:01,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:01,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:01,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 18:08:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:01,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:01,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:01,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:01,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:01,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:01,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:01,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:01,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:01,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:01,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:01,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:01,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 18:08:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:01,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:01,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:01,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:01,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:01,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:01,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:01,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:01,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-14 18:08:01,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013330309] [2020-10-14 18:08:01,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:01,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 18:08:01,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185442892] [2020-10-14 18:08:01,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 18:08:01,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:01,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 18:08:01,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:08:01,132 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 7 states. [2020-10-14 18:08:01,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:01,226 INFO L93 Difference]: Finished difference Result 86 states and 92 transitions. [2020-10-14 18:08:01,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 18:08:01,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-14 18:08:01,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:01,227 INFO L225 Difference]: With dead ends: 86 [2020-10-14 18:08:01,227 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 18:08:01,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:08:01,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 18:08:01,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2020-10-14 18:08:01,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 18:08:01,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-10-14 18:08:01,239 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 42 [2020-10-14 18:08:01,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:01,239 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-10-14 18:08:01,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 18:08:01,240 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-10-14 18:08:01,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 18:08:01,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:01,241 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:01,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 18:08:01,241 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:01,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:01,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1111945397, now seen corresponding path program 10 times [2020-10-14 18:08:01,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:01,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084812569] [2020-10-14 18:08:01,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:01,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:01,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:01,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:02,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:02,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 18:08:02,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:08:02,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1360 [2020-10-14 18:08:02,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:02,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:08:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:08:02,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 18:08:02,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:02,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:02,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:02,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:02,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:02,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:02,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:02,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:02,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:02,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:02,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:02,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:02,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:02,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 18:08:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:02,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:02,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:02,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:02,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:02,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:08:02,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:02,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:02,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:02,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 18:08:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:02,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:02,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:02,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:02,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:02,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:08:02,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:02,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:02,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:02,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:02,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:02,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:02,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 18:08:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:02,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:02,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:02,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:02,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:02,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:08:02,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:02,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:02,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:02,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:02,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:02,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 18:08:02,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084812569] [2020-10-14 18:08:02,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:02,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:08:02,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805502846] [2020-10-14 18:08:02,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:08:02,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:02,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:08:02,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:08:02,933 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 16 states. [2020-10-14 18:08:03,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:03,561 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2020-10-14 18:08:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 18:08:03,562 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-10-14 18:08:03,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:03,563 INFO L225 Difference]: With dead ends: 70 [2020-10-14 18:08:03,563 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 18:08:03,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:08:03,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 18:08:03,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2020-10-14 18:08:03,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 18:08:03,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2020-10-14 18:08:03,587 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 44 [2020-10-14 18:08:03,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:03,588 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2020-10-14 18:08:03,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:08:03,588 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2020-10-14 18:08:03,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 18:08:03,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:03,589 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:03,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 18:08:03,590 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:03,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:03,590 INFO L82 PathProgramCache]: Analyzing trace with hash -915148056, now seen corresponding path program 11 times [2020-10-14 18:08:03,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:03,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108567751] [2020-10-14 18:08:03,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:03,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:03,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:04,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:05,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:05,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 18:08:05,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:08:05,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1583 [2020-10-14 18:08:05,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:05,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:05,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:08:05,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:08:05,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 18:08:05,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:05,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:05,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:05,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:05,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:05,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:05,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:05,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:05,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:05,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:05,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:05,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:05,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:05,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 18:08:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:05,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:05,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:05,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:05,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:05,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:08:05,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:05,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:05,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:05,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:05,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:05,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:05,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 18:08:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:05,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:05,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:05,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:05,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:05,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:08:05,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:05,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:05,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:05,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:05,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:05,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:05,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:08:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:05,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:05,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:05,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:05,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:05,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:05,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:05,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:05,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:05,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:05,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:05,501 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 18:08:05,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108567751] [2020-10-14 18:08:05,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:05,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:08:05,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035636719] [2020-10-14 18:08:05,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:08:05,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:05,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:08:05,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:08:05,504 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand 17 states. [2020-10-14 18:08:06,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:06,220 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2020-10-14 18:08:06,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 18:08:06,220 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2020-10-14 18:08:06,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:06,221 INFO L225 Difference]: With dead ends: 91 [2020-10-14 18:08:06,222 INFO L226 Difference]: Without dead ends: 89 [2020-10-14 18:08:06,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2020-10-14 18:08:06,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-14 18:08:06,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 65. [2020-10-14 18:08:06,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 18:08:06,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-10-14 18:08:06,242 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 45 [2020-10-14 18:08:06,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:06,243 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-10-14 18:08:06,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:08:06,243 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-10-14 18:08:06,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 18:08:06,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:06,244 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:06,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 18:08:06,244 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:06,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:06,245 INFO L82 PathProgramCache]: Analyzing trace with hash 890602219, now seen corresponding path program 12 times [2020-10-14 18:08:06,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:06,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15308982] [2020-10-14 18:08:06,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:06,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:06,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:06,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:08,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:08,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 18:08:08,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:08:08,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1829 [2020-10-14 18:08:08,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:08,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:08,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 18:08:08,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:08:08,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 18:08:08,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:08,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:08,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:08,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:08,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:08,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:08,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:08,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:08,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:08,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:08,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:08,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:08,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 18:08:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:08,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:08,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:08,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:08,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:08,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:08:08,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:08,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:08,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:08,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:08,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:08,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:08,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 18:08:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:08,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:08,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:08,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:08,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:08,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:08:08,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:08,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:08,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:08,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:08,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:08,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:08,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 18:08:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:08,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:08,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:08,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:08,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:08,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:08:08,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:08,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:08,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:08,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:08,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:08,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:08,439 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 18:08:08,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15308982] [2020-10-14 18:08:08,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:08,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 18:08:08,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251693294] [2020-10-14 18:08:08,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 18:08:08,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:08,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 18:08:08,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:08:08,443 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 18 states. [2020-10-14 18:08:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:09,036 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-10-14 18:08:09,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 18:08:09,039 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2020-10-14 18:08:09,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:09,040 INFO L225 Difference]: With dead ends: 75 [2020-10-14 18:08:09,041 INFO L226 Difference]: Without dead ends: 73 [2020-10-14 18:08:09,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:08:09,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-14 18:08:09,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2020-10-14 18:08:09,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 18:08:09,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-10-14 18:08:09,052 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 46 [2020-10-14 18:08:09,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:09,053 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-10-14 18:08:09,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 18:08:09,053 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-10-14 18:08:09,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 18:08:09,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:09,054 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:09,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 18:08:09,055 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:09,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:09,056 INFO L82 PathProgramCache]: Analyzing trace with hash 554149414, now seen corresponding path program 13 times [2020-10-14 18:08:09,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:09,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123506762] [2020-10-14 18:08:09,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:09,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:09,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:09,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:09,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 18:08:09,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:08:09,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-10-14 18:08:09,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:09,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:09,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 18:08:09,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 18:08:09,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:09,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:09,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:09,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:09,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:09,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:09,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:09,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:09,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:09,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:09,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:09,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:09,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:09,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:09,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 18:08:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:09,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:09,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:09,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:09,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:09,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:09,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:09,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:09,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:09,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 18:08:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:09,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:09,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:09,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:09,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:09,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:09,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:09,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:09,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:09,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:09,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:09,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:09,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 18:08:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:09,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:09,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:09,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:09,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:09,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:09,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:09,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:09,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:09,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 18:08:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:09,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:09,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:09,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:09,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:09,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:09,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:09,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:09,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:09,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:09,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:09,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:09,818 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 18:08:09,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123506762] [2020-10-14 18:08:09,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:09,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 18:08:09,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461351275] [2020-10-14 18:08:09,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 18:08:09,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:09,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 18:08:09,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:08:09,820 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 8 states. [2020-10-14 18:08:09,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:09,942 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2020-10-14 18:08:09,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 18:08:09,942 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-10-14 18:08:09,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:09,943 INFO L225 Difference]: With dead ends: 103 [2020-10-14 18:08:09,943 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 18:08:09,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:08:09,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 18:08:09,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2020-10-14 18:08:09,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-14 18:08:09,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-10-14 18:08:09,953 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 51 [2020-10-14 18:08:09,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:09,954 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-10-14 18:08:09,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 18:08:09,954 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-10-14 18:08:09,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 18:08:09,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:09,955 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:09,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 18:08:09,955 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:09,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:09,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1433273787, now seen corresponding path program 14 times [2020-10-14 18:08:09,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:09,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718413651] [2020-10-14 18:08:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:09,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:09,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:10,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:12,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:12,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 18:08:12,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:08:12,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2340 [2020-10-14 18:08:12,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:12,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:12,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 18:08:12,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:08:12,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 18:08:12,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:12,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:12,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:12,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:12,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:12,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:12,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:12,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:12,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:12,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:12,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 18:08:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:12,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:12,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:12,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:12,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:12,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:12,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:12,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:12,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:12,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:12,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:12,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:12,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 18:08:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:12,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:12,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:12,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:12,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:12,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:12,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:12,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:12,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:12,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:12,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:12,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:12,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 18:08:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:12,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:12,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:12,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:12,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:12,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:12,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:12,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:12,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:12,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:12,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:12,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:12,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:08:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:12,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:12,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:12,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:12,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:12,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:12,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:12,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:12,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:12,598 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 18:08:12,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718413651] [2020-10-14 18:08:12,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:12,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 18:08:12,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711919581] [2020-10-14 18:08:12,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 18:08:12,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:12,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 18:08:12,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:08:12,603 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 18 states. [2020-10-14 18:08:13,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:13,249 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2020-10-14 18:08:13,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:08:13,250 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 53 [2020-10-14 18:08:13,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:13,251 INFO L225 Difference]: With dead ends: 82 [2020-10-14 18:08:13,251 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 18:08:13,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:08:13,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 18:08:13,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2020-10-14 18:08:13,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-14 18:08:13,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2020-10-14 18:08:13,270 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 53 [2020-10-14 18:08:13,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:13,271 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2020-10-14 18:08:13,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 18:08:13,271 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2020-10-14 18:08:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 18:08:13,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:13,274 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:13,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 18:08:13,274 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:13,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:13,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1471158186, now seen corresponding path program 15 times [2020-10-14 18:08:13,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:13,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304430446] [2020-10-14 18:08:13,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:13,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:13,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:14,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:15,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:15,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 18:08:15,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:08:15,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2010 [2020-10-14 18:08:15,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:15,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:15,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:08:15,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:08:15,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 18:08:15,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:15,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:15,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:15,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:15,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:15,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:15,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:08:15,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:15,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:15,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:15,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 18:08:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:15,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:15,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:15,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:15,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:15,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:15,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:15,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:15,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:15,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:15,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:15,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:15,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 18:08:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:15,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:15,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:15,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:15,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:15,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:15,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:15,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:15,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:15,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:15,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:15,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:15,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:08:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:15,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:15,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:15,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:15,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:15,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:08:15,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:15,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:15,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:15,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:15,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:15,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:15,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:08:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:15,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:15,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:15,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:15,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:15,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:15,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:15,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:15,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 47 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 18:08:15,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304430446] [2020-10-14 18:08:15,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:15,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:08:15,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852297187] [2020-10-14 18:08:15,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:08:15,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:15,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:08:15,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:08:15,701 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand 19 states. [2020-10-14 18:08:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:16,495 INFO L93 Difference]: Finished difference Result 105 states and 119 transitions. [2020-10-14 18:08:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:08:16,496 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 54 [2020-10-14 18:08:16,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:16,497 INFO L225 Difference]: With dead ends: 105 [2020-10-14 18:08:16,497 INFO L226 Difference]: Without dead ends: 103 [2020-10-14 18:08:16,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:08:16,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-14 18:08:16,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 77. [2020-10-14 18:08:16,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 18:08:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-10-14 18:08:16,519 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 54 [2020-10-14 18:08:16,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:16,519 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-10-14 18:08:16,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:08:16,519 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-10-14 18:08:16,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 18:08:16,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:16,520 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:16,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 18:08:16,521 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:16,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:16,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1314236133, now seen corresponding path program 16 times [2020-10-14 18:08:16,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:16,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599171804] [2020-10-14 18:08:16,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:16,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:16,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:17,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:18,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:18,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 18:08:18,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:08:18,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2354 [2020-10-14 18:08:18,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:18,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:18,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 18:08:18,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:08:18,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 18:08:18,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:19,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:19,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:19,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:19,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:19,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:19,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:19,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:19,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:19,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:19,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:08:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:19,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:19,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:19,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:19,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:19,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:19,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:19,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:19,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:19,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:19,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:19,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:19,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:08:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:19,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:19,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:19,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:19,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:19,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:19,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:19,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:19,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:19,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:19,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:19,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:19,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 18:08:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:19,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:19,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:19,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:19,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:19,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:19,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:19,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:19,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:19,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:19,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:19,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:19,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:08:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:19,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:19,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:19,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:19,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:19,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:19,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:19,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:19,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:19,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:19,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:19,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:19,298 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 8 proven. 54 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 18:08:19,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599171804] [2020-10-14 18:08:19,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:19,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:08:19,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491957663] [2020-10-14 18:08:19,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:08:19,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:19,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:08:19,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:08:19,300 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 20 states. [2020-10-14 18:08:20,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:20,179 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-10-14 18:08:20,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:08:20,189 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 55 [2020-10-14 18:08:20,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:20,190 INFO L225 Difference]: With dead ends: 87 [2020-10-14 18:08:20,190 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 18:08:20,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:08:20,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 18:08:20,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 63. [2020-10-14 18:08:20,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 18:08:20,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2020-10-14 18:08:20,218 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 55 [2020-10-14 18:08:20,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:20,219 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2020-10-14 18:08:20,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:08:20,219 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2020-10-14 18:08:20,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 18:08:20,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:20,223 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:20,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 18:08:20,224 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:20,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:20,226 INFO L82 PathProgramCache]: Analyzing trace with hash -702984724, now seen corresponding path program 17 times [2020-10-14 18:08:20,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:20,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605815125] [2020-10-14 18:08:20,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:20,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:20,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:21,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:21,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 18:08:21,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:08:21,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 842 [2020-10-14 18:08:21,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:21,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:21,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:08:21,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 18:08:21,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:08:21,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:21,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:21,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:21,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:21,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:21,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:21,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:21,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:21,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:21,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:21,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:21,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:21,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:21,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 18:08:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:21,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:21,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:21,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:21,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:21,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:21,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:21,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:21,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:21,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:21,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:21,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:21,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 18:08:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:21,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:21,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:21,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:21,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:21,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:21,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:21,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:21,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:21,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:21,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:21,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:21,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 18:08:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:21,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:21,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:21,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:21,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:21,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:21,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:21,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:21,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:21,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:21,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:21,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:21,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:08:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:21,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:21,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:21,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:21,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:21,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:21,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:21,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:21,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 18:08:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:21,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:21,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:21,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:21,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:21,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:21,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:21,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:21,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:21,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:21,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:21,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-14 18:08:21,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605815125] [2020-10-14 18:08:21,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:21,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 18:08:21,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643202621] [2020-10-14 18:08:21,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 18:08:21,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:21,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 18:08:21,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:08:21,179 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 9 states. [2020-10-14 18:08:21,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:21,366 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2020-10-14 18:08:21,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 18:08:21,367 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-14 18:08:21,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:21,369 INFO L225 Difference]: With dead ends: 120 [2020-10-14 18:08:21,369 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 18:08:21,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:08:21,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 18:08:21,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-10-14 18:08:21,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 18:08:21,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2020-10-14 18:08:21,391 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 60 [2020-10-14 18:08:21,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:21,392 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2020-10-14 18:08:21,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 18:08:21,392 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2020-10-14 18:08:21,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 18:08:21,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:21,402 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:21,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 18:08:21,403 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:21,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:21,404 INFO L82 PathProgramCache]: Analyzing trace with hash 421403147, now seen corresponding path program 18 times [2020-10-14 18:08:21,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:21,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400633347] [2020-10-14 18:08:21,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:21,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:21,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:22,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:24,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:24,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 18:08:24,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:08:24,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3015 [2020-10-14 18:08:24,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:24,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 18:08:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:08:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 18:08:24,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:24,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:24,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:24,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:24,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:24,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:24,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:24,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:24,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:24,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:24,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:24,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:24,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:24,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:08:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:24,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:24,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:24,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:24,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:24,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 18:08:24,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:24,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:24,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:24,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:24,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:24,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:24,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:08:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:24,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:24,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:24,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:24,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:24,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:08:24,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:24,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:24,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:24,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:24,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:24,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:24,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 18:08:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:24,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:24,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:24,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:24,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:24,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:08:24,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:24,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:24,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:24,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:25,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:08:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:25,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:25,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:25,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:25,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:25,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:08:25,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:25,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:25,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:25,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:25,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:25,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:25,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:08:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:25,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:25,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:25,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:25,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:25,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:08:25,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:25,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:25,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:25,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:25,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:25,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 10 proven. 61 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-14 18:08:25,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400633347] [2020-10-14 18:08:25,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:25,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:08:25,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733040054] [2020-10-14 18:08:25,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:08:25,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:25,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:08:25,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:08:25,042 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 20 states. [2020-10-14 18:08:26,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:26,036 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2020-10-14 18:08:26,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 18:08:26,037 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 62 [2020-10-14 18:08:26,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:26,039 INFO L225 Difference]: With dead ends: 94 [2020-10-14 18:08:26,039 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 18:08:26,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2020-10-14 18:08:26,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 18:08:26,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2020-10-14 18:08:26,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 18:08:26,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2020-10-14 18:08:26,066 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 62 [2020-10-14 18:08:26,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:26,067 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2020-10-14 18:08:26,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:08:26,067 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2020-10-14 18:08:26,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 18:08:26,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:26,068 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:26,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 18:08:26,068 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:26,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:26,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1723595944, now seen corresponding path program 19 times [2020-10-14 18:08:26,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:26,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884040250] [2020-10-14 18:08:26,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:26,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:26,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:26,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:28,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:28,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 18:08:28,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:08:28,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2161 [2020-10-14 18:08:28,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:28,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:28,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:08:28,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:08:28,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 18:08:28,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:28,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:28,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:28,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:28,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:28,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:28,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:28,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:28,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:28,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:28,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:28,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:28,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:28,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 18:08:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:28,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:28,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:28,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:28,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:28,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:08:28,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:28,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:28,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:28,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:28,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 18:08:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:28,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:28,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:28,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:28,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:28,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:28,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:28,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:28,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:28,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:28,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:28,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:28,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:08:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:28,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:28,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:28,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:28,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:28,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:28,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:28,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:28,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:28,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:28,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:28,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:28,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:08:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:28,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:28,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:28,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:28,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:28,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:28,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:28,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:28,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:28,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:28,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:28,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:28,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:08:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:28,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:28,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:28,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:28,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:28,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:08:28,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:28,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:28,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:28,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:28,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 10 proven. 68 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-14 18:08:28,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884040250] [2020-10-14 18:08:28,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:28,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:08:28,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190860494] [2020-10-14 18:08:28,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:08:28,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:28,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:08:28,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:08:28,759 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand 21 states. [2020-10-14 18:08:30,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:30,110 INFO L93 Difference]: Finished difference Result 121 states and 137 transitions. [2020-10-14 18:08:30,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 18:08:30,111 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 63 [2020-10-14 18:08:30,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:30,112 INFO L225 Difference]: With dead ends: 121 [2020-10-14 18:08:30,113 INFO L226 Difference]: Without dead ends: 119 [2020-10-14 18:08:30,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=1269, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 18:08:30,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-14 18:08:30,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 89. [2020-10-14 18:08:30,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 18:08:30,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2020-10-14 18:08:30,131 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 63 [2020-10-14 18:08:30,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:30,131 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2020-10-14 18:08:30,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:08:30,131 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2020-10-14 18:08:30,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 18:08:30,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:30,132 INFO L422 BasicCegarLoop]: trace histogram [8, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:30,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 18:08:30,133 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:30,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:30,133 INFO L82 PathProgramCache]: Analyzing trace with hash -858100309, now seen corresponding path program 20 times [2020-10-14 18:08:30,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:30,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37302657] [2020-10-14 18:08:30,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:30,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:30,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:30,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:32,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:32,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 18:08:32,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:08:32,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2526 [2020-10-14 18:08:32,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:32,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:32,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 18:08:32,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:08:32,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 18:08:32,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:33,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:33,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:33,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:33,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:33,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:33,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:33,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:33,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:33,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:33,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:08:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:33,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:33,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:33,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:33,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:33,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:33,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:33,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:33,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:33,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:33,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:33,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:33,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:08:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:33,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:33,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:33,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:33,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:33,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:33,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:33,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:33,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:33,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:08:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:33,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:33,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:33,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:33,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:33,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:33,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:33,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:33,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:33,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:33,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:33,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:33,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:08:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:33,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:33,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:33,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:33,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:33,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:33,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:33,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:33,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:33,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:08:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:33,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:33,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:33,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:33,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:33,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:33,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:33,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:33,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:33,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:33,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:33,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 10 proven. 76 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-14 18:08:33,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37302657] [2020-10-14 18:08:33,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:33,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:08:33,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229571760] [2020-10-14 18:08:33,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:08:33,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:33,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:08:33,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:08:33,150 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 22 states. [2020-10-14 18:08:34,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:34,207 INFO L93 Difference]: Finished difference Result 99 states and 108 transitions. [2020-10-14 18:08:34,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:08:34,207 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 64 [2020-10-14 18:08:34,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:34,208 INFO L225 Difference]: With dead ends: 99 [2020-10-14 18:08:34,209 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 18:08:34,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2020-10-14 18:08:34,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 18:08:34,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 72. [2020-10-14 18:08:34,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 18:08:34,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2020-10-14 18:08:34,221 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 64 [2020-10-14 18:08:34,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:34,222 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2020-10-14 18:08:34,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:08:34,222 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2020-10-14 18:08:34,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 18:08:34,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:34,223 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:34,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 18:08:34,223 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:34,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:34,224 INFO L82 PathProgramCache]: Analyzing trace with hash -828046490, now seen corresponding path program 21 times [2020-10-14 18:08:34,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:34,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756384556] [2020-10-14 18:08:34,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:34,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:34,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:35,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:35,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 18:08:35,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:08:35,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1047 [2020-10-14 18:08:35,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:35,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:35,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:08:35,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:08:35,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:08:35,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:35,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:35,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:35,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:35,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:35,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:35,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:35,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:35,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:35,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:35,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:35,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:35,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:35,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:08:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:35,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:35,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:35,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:35,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:35,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:35,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:35,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:35,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:35,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:35,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:35,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:35,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:08:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:35,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:35,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:35,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:35,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:35,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:35,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:35,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:35,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:35,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:35,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:35,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:35,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 18:08:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:35,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:35,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:35,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:35,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:35,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:35,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:35,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:35,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:35,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:35,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:35,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:35,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:08:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:35,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:35,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:35,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:35,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:35,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:35,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:35,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:35,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:35,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:35,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:35,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:35,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:08:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:35,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:35,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:35,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:35,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:35,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:35,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:35,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:35,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:35,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:35,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:08:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:35,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:35,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:35,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:35,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:35,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:35,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:35,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:35,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:35,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:35,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:35,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:35,367 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-10-14 18:08:35,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756384556] [2020-10-14 18:08:35,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:35,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:08:35,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745043007] [2020-10-14 18:08:35,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:08:35,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:35,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:08:35,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:08:35,369 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 10 states. [2020-10-14 18:08:35,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:35,476 INFO L93 Difference]: Finished difference Result 132 states and 136 transitions. [2020-10-14 18:08:35,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 18:08:35,476 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-10-14 18:08:35,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:35,478 INFO L225 Difference]: With dead ends: 132 [2020-10-14 18:08:35,478 INFO L226 Difference]: Without dead ends: 73 [2020-10-14 18:08:35,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:08:35,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-14 18:08:35,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-14 18:08:35,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 18:08:35,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2020-10-14 18:08:35,488 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 69 [2020-10-14 18:08:35,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:35,488 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2020-10-14 18:08:35,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:08:35,488 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2020-10-14 18:08:35,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 18:08:35,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:35,489 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:35,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 18:08:35,490 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:35,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:35,490 INFO L82 PathProgramCache]: Analyzing trace with hash 311850122, now seen corresponding path program 22 times [2020-10-14 18:08:35,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:35,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341117670] [2020-10-14 18:08:35,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:35,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:35,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:36,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:36,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 18:08:36,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:08:36,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1239 [2020-10-14 18:08:36,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:36,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:36,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:08:36,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:08:36,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:08:36,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:36,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:36,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:36,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:36,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:36,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:36,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:36,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:36,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:36,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:36,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:36,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:36,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:36,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 18:08:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:36,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:36,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:36,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:36,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:36,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:36,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:36,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:36,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:36,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:36,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:36,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:36,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 18:08:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:36,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:36,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:36,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:36,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:36,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:36,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:36,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:36,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:36,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:36,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:36,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:36,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:08:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:36,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:36,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:36,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:36,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:36,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:36,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:36,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:36,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:36,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:36,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:36,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:36,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:08:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:36,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:36,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:36,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:36,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:36,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:36,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:36,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:36,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:36,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:08:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:36,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:36,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:36,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:36,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:36,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:36,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:36,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:36,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:36,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:36,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:36,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:36,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:08:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:36,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:36,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:36,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:36,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:36,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:36,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:36,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:36,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:36,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:36,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:36,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:36,830 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-14 18:08:36,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341117670] [2020-10-14 18:08:36,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:36,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:08:36,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520616773] [2020-10-14 18:08:36,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:08:36,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:36,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:08:36,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:08:36,832 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 10 states. [2020-10-14 18:08:37,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:37,007 INFO L93 Difference]: Finished difference Result 129 states and 133 transitions. [2020-10-14 18:08:37,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 18:08:37,008 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-14 18:08:37,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:37,009 INFO L225 Difference]: With dead ends: 129 [2020-10-14 18:08:37,010 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 18:08:37,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:08:37,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 18:08:37,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2020-10-14 18:08:37,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 18:08:37,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2020-10-14 18:08:37,022 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 70 [2020-10-14 18:08:37,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:37,022 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2020-10-14 18:08:37,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:08:37,022 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2020-10-14 18:08:37,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 18:08:37,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:37,023 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:37,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 18:08:37,024 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:37,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:37,024 INFO L82 PathProgramCache]: Analyzing trace with hash 525998469, now seen corresponding path program 23 times [2020-10-14 18:08:37,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:37,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320471209] [2020-10-14 18:08:37,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:37,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:37,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:37,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:39,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:39,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 18:08:39,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:08:39,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2468 [2020-10-14 18:08:39,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:39,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:39,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 18:08:39,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:08:39,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 18:08:39,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:39,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:39,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:39,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:39,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:39,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:39,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:39,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:39,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:39,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:39,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:39,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:08:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:39,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:39,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:39,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:39,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:39,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:39,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:39,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:39,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:39,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:39,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:39,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:39,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:08:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:39,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:39,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:39,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:39,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:39,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:39,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:39,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:39,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:39,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:08:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:39,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:39,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:39,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:39,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:39,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:39,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:39,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:39,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:39,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:08:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:39,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:39,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:39,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:39,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:39,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:39,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:39,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:39,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:39,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:39,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:39,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:08:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:39,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:39,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:39,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:39,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:39,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:39,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:39,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:39,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:39,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:39,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:39,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:39,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 18:08:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:39,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:39,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:39,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:39,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:39,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:39,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:39,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:39,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:39,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:39,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:39,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:39,988 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 12 proven. 85 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 18:08:39,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320471209] [2020-10-14 18:08:39,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:39,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:08:39,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614298386] [2020-10-14 18:08:39,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:08:39,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:39,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:08:39,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:08:39,990 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand 22 states. [2020-10-14 18:08:40,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:40,948 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2020-10-14 18:08:40,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 18:08:40,949 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 71 [2020-10-14 18:08:40,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:40,950 INFO L225 Difference]: With dead ends: 106 [2020-10-14 18:08:40,950 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 18:08:40,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=965, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 18:08:40,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 18:08:40,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2020-10-14 18:08:40,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 18:08:40,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2020-10-14 18:08:40,968 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 71 [2020-10-14 18:08:40,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:40,969 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions. [2020-10-14 18:08:40,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:08:40,969 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions. [2020-10-14 18:08:40,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 18:08:40,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:40,970 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:40,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 18:08:40,971 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:40,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:40,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1425337366, now seen corresponding path program 24 times [2020-10-14 18:08:40,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:40,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188206211] [2020-10-14 18:08:40,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:40,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:41,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:41,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:44,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:44,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 18:08:44,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:08:44,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3284 [2020-10-14 18:08:44,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:44,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:44,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:08:44,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:08:44,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 18:08:44,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:44,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:44,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:44,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:44,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:44,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:44,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:44,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:44,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:44,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:44,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:44,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:44,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:44,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 18:08:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:44,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:44,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:44,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:44,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:44,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:44,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:44,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:44,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:44,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:44,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:44,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:44,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 18:08:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:44,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:44,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:44,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:44,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:44,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:44,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:44,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:44,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:44,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 18:08:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:44,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:44,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:44,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:44,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:44,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:44,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:44,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:44,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:44,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:44,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:44,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:44,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:08:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:44,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:44,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:44,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:44,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:44,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:44,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:44,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:44,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:44,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:44,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:44,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:44,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:08:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:44,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:44,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:44,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:44,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:44,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:44,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:44,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:44,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:44,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:44,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:44,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:44,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 18:08:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:44,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:44,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:44,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:44,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:44,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:44,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:44,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:44,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:44,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:44,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:44,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:44,837 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 12 proven. 93 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 18:08:44,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188206211] [2020-10-14 18:08:44,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:44,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 18:08:44,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910902588] [2020-10-14 18:08:44,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 18:08:44,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:44,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 18:08:44,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:08:44,839 INFO L87 Difference]: Start difference. First operand 100 states and 109 transitions. Second operand 23 states. [2020-10-14 18:08:46,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:46,069 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2020-10-14 18:08:46,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 18:08:46,070 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 72 [2020-10-14 18:08:46,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:46,071 INFO L225 Difference]: With dead ends: 135 [2020-10-14 18:08:46,072 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 18:08:46,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=109, Invalid=1013, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 18:08:46,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 18:08:46,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 101. [2020-10-14 18:08:46,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 18:08:46,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2020-10-14 18:08:46,092 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 72 [2020-10-14 18:08:46,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:46,093 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2020-10-14 18:08:46,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 18:08:46,093 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2020-10-14 18:08:46,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 18:08:46,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:46,094 INFO L422 BasicCegarLoop]: trace histogram [9, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:46,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 18:08:46,094 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:46,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:46,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1787206107, now seen corresponding path program 25 times [2020-10-14 18:08:46,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:46,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736589950] [2020-10-14 18:08:46,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:46,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:46,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:47,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:49,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:49,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 18:08:49,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:08:49,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3159 [2020-10-14 18:08:49,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:49,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:49,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 18:08:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:08:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 18:08:49,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:49,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:49,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:49,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:49,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:49,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:49,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:49,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:49,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:49,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:49,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:49,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:49,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:49,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 18:08:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:49,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:49,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:49,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:49,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:49,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:49,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:49,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:49,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:49,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:49,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:49,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:49,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:08:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:49,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:49,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:49,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:49,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:49,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:49,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:49,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:49,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:49,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:49,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:49,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:49,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:08:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:49,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:49,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:49,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:49,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:49,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:49,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:49,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:49,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:49,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:49,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:49,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:49,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:08:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:49,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:49,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:49,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:49,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:49,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:49,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:49,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:49,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:49,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:49,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:49,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:49,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:08:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:49,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:49,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:49,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:49,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:49,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:49,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:49,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:49,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:49,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:49,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:08:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:49,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:49,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:49,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:49,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:49,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:49,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:49,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:49,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 12 proven. 102 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 18:08:49,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736589950] [2020-10-14 18:08:49,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:49,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 18:08:49,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640992998] [2020-10-14 18:08:49,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 18:08:49,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:49,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 18:08:49,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:08:49,814 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand 24 states. [2020-10-14 18:08:51,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:51,008 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2020-10-14 18:08:51,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 18:08:51,009 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 73 [2020-10-14 18:08:51,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:51,010 INFO L225 Difference]: With dead ends: 111 [2020-10-14 18:08:51,010 INFO L226 Difference]: Without dead ends: 109 [2020-10-14 18:08:51,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=108, Invalid=1014, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 18:08:51,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-14 18:08:51,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 81. [2020-10-14 18:08:51,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 18:08:51,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2020-10-14 18:08:51,022 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 73 [2020-10-14 18:08:51,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:51,022 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2020-10-14 18:08:51,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 18:08:51,022 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2020-10-14 18:08:51,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 18:08:51,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:51,023 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:51,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 18:08:51,023 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:51,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:51,024 INFO L82 PathProgramCache]: Analyzing trace with hash 755730092, now seen corresponding path program 26 times [2020-10-14 18:08:51,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:51,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654121920] [2020-10-14 18:08:51,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:51,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:51,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:52,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:52,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 18:08:52,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:08:52,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1493 [2020-10-14 18:08:52,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:52,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:08:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:08:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 18:08:52,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:52,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:52,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:52,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:52,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:52,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:52,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:52,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:52,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:52,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:52,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:52,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:52,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:52,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:08:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:52,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:52,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:52,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:52,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:52,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:52,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:52,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:52,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:52,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:52,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:52,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:52,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:08:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:52,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:52,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:52,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:52,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:52,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:52,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:52,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:52,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:52,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:52,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:52,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:52,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:08:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:52,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:52,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:52,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:52,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:52,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:52,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:52,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:52,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:52,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:52,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:52,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:52,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:08:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:52,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:52,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:52,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:52,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:52,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:52,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:52,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:52,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:52,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:52,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:52,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:52,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:08:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:52,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:52,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:52,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:52,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:52,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:52,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:52,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:52,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:52,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:52,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:52,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:52,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 18:08:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:52,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:52,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:52,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:52,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:52,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:52,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:52,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:52,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:52,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:08:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:52,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:52,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:52,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:52,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:52,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:52,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:52,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:52,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:52,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:52,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:52,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-14 18:08:52,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654121920] [2020-10-14 18:08:52,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:52,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:08:52,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106667312] [2020-10-14 18:08:52,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:08:52,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:52,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:08:52,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:08:52,631 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 11 states. [2020-10-14 18:08:52,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:52,828 INFO L93 Difference]: Finished difference Result 154 states and 160 transitions. [2020-10-14 18:08:52,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 18:08:52,829 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-10-14 18:08:52,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:52,830 INFO L225 Difference]: With dead ends: 154 [2020-10-14 18:08:52,830 INFO L226 Difference]: Without dead ends: 87 [2020-10-14 18:08:52,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:08:52,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-14 18:08:52,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2020-10-14 18:08:52,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 18:08:52,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-10-14 18:08:52,851 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 78 [2020-10-14 18:08:52,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:52,851 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-10-14 18:08:52,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:08:52,851 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-10-14 18:08:52,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 18:08:52,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:52,852 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:52,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 18:08:52,853 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:52,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:52,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1429908277, now seen corresponding path program 27 times [2020-10-14 18:08:52,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:52,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918592249] [2020-10-14 18:08:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:52,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:52,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:53,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:56,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:56,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 18:08:56,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:08:56,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3768 [2020-10-14 18:08:56,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:56,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 18:08:56,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:08:56,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 18:08:56,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:57,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:57,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:57,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:57,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:57,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:57,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:57,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:57,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:57,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:57,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:57,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:57,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:57,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 18:08:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:57,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:57,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:57,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:57,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:57,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:57,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:57,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:57,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:57,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:57,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:57,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:57,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:08:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:57,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:57,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:57,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:57,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:57,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:57,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:57,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:57,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:57,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:57,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:57,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:57,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:08:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:57,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:57,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:57,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:57,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:57,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:57,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:57,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:57,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:57,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:57,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:57,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:57,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:08:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:57,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:57,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:57,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:57,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:57,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:57,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:57,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:57,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:57,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:08:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:57,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:57,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:57,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:57,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:57,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:57,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:57,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:57,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:57,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:57,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:57,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:57,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:08:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:57,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:57,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:57,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:57,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:57,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:57,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:57,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:57,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:57,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:57,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:57,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:57,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 18:08:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:57,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:57,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:57,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:57,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:57,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:57,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:57,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:57,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:57,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:57,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:57,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 14 proven. 113 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-14 18:08:57,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918592249] [2020-10-14 18:08:57,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:57,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 18:08:57,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333774384] [2020-10-14 18:08:57,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 18:08:57,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:57,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 18:08:57,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:08:57,258 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 24 states. [2020-10-14 18:08:58,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:58,575 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2020-10-14 18:08:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 18:08:58,575 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 80 [2020-10-14 18:08:58,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:58,577 INFO L225 Difference]: With dead ends: 118 [2020-10-14 18:08:58,577 INFO L226 Difference]: Without dead ends: 116 [2020-10-14 18:08:58,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=104, Invalid=1086, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 18:08:58,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-14 18:08:58,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2020-10-14 18:08:58,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-14 18:08:58,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2020-10-14 18:08:58,599 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 80 [2020-10-14 18:08:58,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:58,599 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions. [2020-10-14 18:08:58,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 18:08:58,600 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions. [2020-10-14 18:08:58,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 18:08:58,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:58,601 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:58,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 18:08:58,601 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:58,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:58,602 INFO L82 PathProgramCache]: Analyzing trace with hash 914617960, now seen corresponding path program 28 times [2020-10-14 18:08:58,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:58,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14116999] [2020-10-14 18:08:58,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:58,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:58,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:00,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:02,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:02,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 18:09:02,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:09:02,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3717 [2020-10-14 18:09:02,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:02,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:02,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:09:02,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:09:02,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 18:09:02,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:02,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:09:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:02,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:02,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:02,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:09:02,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:02,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:02,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:02,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:02,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:02,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 18:09:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:02,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:02,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:02,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:02,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:02,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:09:02,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:02,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:02,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:02,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:02,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:02,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:02,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 18:09:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:02,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:02,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:02,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:02,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:02,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:02,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:02,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:02,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:02,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:02,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:02,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:02,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:09:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:02,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:02,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:02,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:02,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:02,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:02,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:02,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:02,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:02,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:02,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:02,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:02,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 18:09:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:02,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:02,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:02,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:02,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:02,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:02,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:02,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:02,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:02,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 18:09:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:02,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:02,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:02,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:02,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:02,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:02,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:02,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:02,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:02,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:02,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:09:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:02,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:02,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:02,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:02,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:02,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:09:02,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:02,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:02,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:02,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:02,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:02,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:02,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:09:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:02,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:02,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:02,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:02,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:02,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:02,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:02,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:02,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:02,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:02,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:02,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 14 proven. 122 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-14 18:09:02,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14116999] [2020-10-14 18:09:02,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:09:02,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 18:09:02,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606871936] [2020-10-14 18:09:02,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 18:09:02,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:09:02,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 18:09:02,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=551, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:09:02,976 INFO L87 Difference]: Start difference. First operand 112 states and 122 transitions. Second operand 25 states. [2020-10-14 18:09:04,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:09:04,409 INFO L93 Difference]: Finished difference Result 150 states and 170 transitions. [2020-10-14 18:09:04,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 18:09:04,409 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 81 [2020-10-14 18:09:04,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:09:04,411 INFO L225 Difference]: With dead ends: 150 [2020-10-14 18:09:04,411 INFO L226 Difference]: Without dead ends: 148 [2020-10-14 18:09:04,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=119, Invalid=1213, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 18:09:04,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-14 18:09:04,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 113. [2020-10-14 18:09:04,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 18:09:04,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 124 transitions. [2020-10-14 18:09:04,435 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 124 transitions. Word has length 81 [2020-10-14 18:09:04,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:09:04,435 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 124 transitions. [2020-10-14 18:09:04,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 18:09:04,436 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 124 transitions. [2020-10-14 18:09:04,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 18:09:04,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:09:04,437 INFO L422 BasicCegarLoop]: trace histogram [10, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:09:04,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 18:09:04,437 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:09:04,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:09:04,438 INFO L82 PathProgramCache]: Analyzing trace with hash 580487275, now seen corresponding path program 29 times [2020-10-14 18:09:04,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:09:04,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985699950] [2020-10-14 18:09:04,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:09:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:04,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:04,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:06,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:09,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:09,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 18:09:09,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:09:09,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4593 [2020-10-14 18:09:09,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:09,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:09,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 18:09:09,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:09:09,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 18:09:09,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:09,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:09:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:09,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:09,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:09,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:09:09,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:09,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:09,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:09,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:09,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:09,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 18:09:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:09,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:09,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:09,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:09,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:09,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:09:09,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:09,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:09,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:09,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:09,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:09,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:09,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:09:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:09,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:09,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:09,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:09,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:09,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:09,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:09,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:09,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:09,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:09,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:09,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:09:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:09,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:09,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:09,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:09,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:09,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:09,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:09,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:09,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:09,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:09,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:09,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:09,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:09:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:09,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:09,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:09,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:09,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:09,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:09,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:09,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:09,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:09,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:09,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:09,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:09,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:09:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:09,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:09,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:09,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:09,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:09,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:09,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:09,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:09,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:09,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 18:09:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:09,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:09,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:09,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:09,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:09,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:09,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:09,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:09,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:09,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:09,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:09,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:09,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:09:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:09,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:09,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:09,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:09,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:09,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:09,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:09,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:09,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:09,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:09,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:09,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 14 proven. 132 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-14 18:09:09,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985699950] [2020-10-14 18:09:09,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:09:09,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 18:09:09,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308741699] [2020-10-14 18:09:09,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 18:09:09,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:09:09,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 18:09:09,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:09:09,732 INFO L87 Difference]: Start difference. First operand 113 states and 124 transitions. Second operand 26 states. [2020-10-14 18:09:11,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:09:11,224 INFO L93 Difference]: Finished difference Result 123 states and 134 transitions. [2020-10-14 18:09:11,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 18:09:11,225 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 82 [2020-10-14 18:09:11,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:09:11,227 INFO L225 Difference]: With dead ends: 123 [2020-10-14 18:09:11,227 INFO L226 Difference]: Without dead ends: 121 [2020-10-14 18:09:11,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=123, Invalid=1283, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 18:09:11,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-14 18:09:11,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 90. [2020-10-14 18:09:11,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-14 18:09:11,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2020-10-14 18:09:11,269 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 82 [2020-10-14 18:09:11,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:09:11,269 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2020-10-14 18:09:11,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 18:09:11,270 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2020-10-14 18:09:11,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 18:09:11,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:09:11,272 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:09:11,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 18:09:11,272 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:09:11,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:09:11,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1344942246, now seen corresponding path program 30 times [2020-10-14 18:09:11,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:09:11,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852246394] [2020-10-14 18:09:11,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:09:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:11,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:11,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:13,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:13,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 18:09:13,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:09:13,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2207 [2020-10-14 18:09:13,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:13,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:13,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:09:13,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:09:13,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 18:09:13,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:13,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:09:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:13,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:13,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:13,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:09:13,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:13,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:13,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:13,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:13,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:13,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 18:09:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:13,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:13,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:13,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:13,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:13,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:13,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:13,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:13,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:13,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:13,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:13,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:13,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:09:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:13,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:13,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:13,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:13,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:13,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:13,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:13,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:13,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:13,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:13,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:13,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:13,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:09:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:13,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:13,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:13,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:13,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:13,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:13,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:13,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:13,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:13,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:13,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:13,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:13,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:09:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:13,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:13,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:13,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:13,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:13,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:13,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:13,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:13,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:13,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:13,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:13,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:13,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:09:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:13,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:13,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:13,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:13,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:13,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:13,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:13,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:13,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:13,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:09:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:13,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:13,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:13,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:13,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:13,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:13,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:13,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:13,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:13,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:13,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:13,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:13,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 18:09:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:13,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:13,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:13,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:13,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:13,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:13,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:13,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:13,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:13,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:13,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:13,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:13,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 18:09:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:13,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:13,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:13,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:13,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:13,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:13,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:13,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:13,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:13,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:13,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:13,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:13,614 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2020-10-14 18:09:13,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852246394] [2020-10-14 18:09:13,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:09:13,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:09:13,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956222783] [2020-10-14 18:09:13,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:09:13,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:09:13,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:09:13,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:09:13,616 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 12 states. [2020-10-14 18:09:13,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:09:13,733 INFO L93 Difference]: Finished difference Result 166 states and 170 transitions. [2020-10-14 18:09:13,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:09:13,733 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 87 [2020-10-14 18:09:13,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:09:13,735 INFO L225 Difference]: With dead ends: 166 [2020-10-14 18:09:13,735 INFO L226 Difference]: Without dead ends: 91 [2020-10-14 18:09:13,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:09:13,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-14 18:09:13,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-10-14 18:09:13,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 18:09:13,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2020-10-14 18:09:13,749 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 87 [2020-10-14 18:09:13,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:09:13,749 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2020-10-14 18:09:13,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:09:13,749 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2020-10-14 18:09:13,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 18:09:13,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:09:13,751 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:09:13,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 18:09:13,751 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:09:13,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:09:13,751 INFO L82 PathProgramCache]: Analyzing trace with hash -84467510, now seen corresponding path program 31 times [2020-10-14 18:09:13,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:09:13,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270054561] [2020-10-14 18:09:13,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:09:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:13,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:13,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:16,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:16,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 18:09:16,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:09:16,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2581 [2020-10-14 18:09:16,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:16,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:09:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 18:09:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 18:09:16,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:16,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:09:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:16,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:16,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:16,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:09:16,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:16,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:16,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:16,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:16,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:16,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:16,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:16,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:16,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 18:09:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:16,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:16,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:16,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:16,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:16,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:16,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:16,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:16,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:16,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 18:09:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:16,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:16,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:16,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:16,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:16,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:16,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:16,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:16,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:16,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:16,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:16,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:16,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:09:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:16,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:16,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:16,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:16,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:16,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:16,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:16,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:16,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:16,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:16,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:16,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:16,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 18:09:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:16,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:16,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:16,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:16,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:16,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:16,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:16,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:16,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:16,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:16,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:16,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:16,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 18:09:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:16,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:16,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:16,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:16,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:16,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:16,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:16,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:16,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:16,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:16,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:16,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:16,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:09:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:16,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:16,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:16,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:16,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:16,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:16,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:16,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:16,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:16,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:16,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:16,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:16,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:09:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:16,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:16,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:16,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:16,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:16,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:16,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:16,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:16,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:16,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:16,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:16,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:16,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:09:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:16,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:16,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:16,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:16,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:16,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:16,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:16,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:16,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:16,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:16,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:16,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:16,456 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2020-10-14 18:09:16,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270054561] [2020-10-14 18:09:16,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:09:16,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:09:16,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666287171] [2020-10-14 18:09:16,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:09:16,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:09:16,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:09:16,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:09:16,458 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 12 states. [2020-10-14 18:09:16,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:09:16,651 INFO L93 Difference]: Finished difference Result 161 states and 165 transitions. [2020-10-14 18:09:16,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:09:16,652 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-10-14 18:09:16,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:09:16,653 INFO L225 Difference]: With dead ends: 161 [2020-10-14 18:09:16,654 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 18:09:16,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:09:16,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 18:09:16,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2020-10-14 18:09:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-14 18:09:16,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2020-10-14 18:09:16,666 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 88 [2020-10-14 18:09:16,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:09:16,666 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2020-10-14 18:09:16,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:09:16,666 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2020-10-14 18:09:16,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 18:09:16,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:09:16,667 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:09:16,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 18:09:16,667 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:09:16,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:09:16,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1278342971, now seen corresponding path program 32 times [2020-10-14 18:09:16,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:09:16,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383504737] [2020-10-14 18:09:16,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:09:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:16,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:16,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:18,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:21,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:21,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 18:09:21,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:09:21,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 18:09:21,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:21,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:21,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 18:09:21,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:09:21,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 18:09:21,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:22,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:09:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:22,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:22,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:22,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:09:22,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:22,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:22,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:22,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:22,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 18:09:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:22,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:22,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:22,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:22,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:22,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:09:22,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:22,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:22,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:09:22,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:09:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:22,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:22,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:22,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:22,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:22,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:09:22,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:22,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:22,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:22,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:22,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:22,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:22,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:09:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:22,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:22,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:22,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:22,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:22,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:09:22,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:22,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:22,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:22,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:22,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:22,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:22,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:09:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:22,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:22,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:22,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:22,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:22,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:22,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:22,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:22,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:22,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:22,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:22,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:22,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:09:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:22,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:22,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:22,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:22,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:22,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:09:22,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:22,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:22,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:22,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:22,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:22,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:22,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 18:09:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:22,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:22,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:22,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:22,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:22,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:22,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:22,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:22,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:22,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:09:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:22,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:22,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:22,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:22,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:22,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:22,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:22,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:22,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:22,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:22,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:22,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:22,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:09:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:22,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:22,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:22,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:22,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:22,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:09:22,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:22,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:22,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:22,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:22,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:22,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:09:22,430 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 16 proven. 145 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-14 18:09:22,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383504737] [2020-10-14 18:09:22,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:09:22,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 18:09:22,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487252251] [2020-10-14 18:09:22,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 18:09:22,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:09:22,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 18:09:22,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:09:22,432 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand 26 states. [2020-10-14 18:09:24,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:09:24,053 INFO L93 Difference]: Finished difference Result 130 states and 142 transitions. [2020-10-14 18:09:24,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 18:09:24,055 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 89 [2020-10-14 18:09:24,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:09:24,056 INFO L225 Difference]: With dead ends: 130 [2020-10-14 18:09:24,056 INFO L226 Difference]: Without dead ends: 128 [2020-10-14 18:09:24,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=118, Invalid=1364, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 18:09:24,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-14 18:09:24,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2020-10-14 18:09:24,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-14 18:09:24,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 135 transitions. [2020-10-14 18:09:24,078 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 135 transitions. Word has length 89 [2020-10-14 18:09:24,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:09:24,078 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 135 transitions. [2020-10-14 18:09:24,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 18:09:24,078 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 135 transitions. [2020-10-14 18:09:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 18:09:24,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:09:24,080 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:09:24,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 18:09:24,080 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:09:24,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:09:24,080 INFO L82 PathProgramCache]: Analyzing trace with hash 366223402, now seen corresponding path program 33 times [2020-10-14 18:09:24,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:09:24,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581097880] [2020-10-14 18:09:24,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:09:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:24,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:24,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:26,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:29,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:29,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 18:09:29,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:09:29,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 18:09:29,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:29,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 18:09:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:09:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 18:09:29,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:29,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:09:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:29,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:29,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:29,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:09:29,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:29,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:29,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:29,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:29,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:29,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:09:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:29,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:29,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:29,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:29,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:29,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:29,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:29,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:29,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:29,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:29,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:29,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:29,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 18:09:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:29,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:29,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:29,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:29,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:29,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:29,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:29,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:29,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:29,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:29,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:29,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:29,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:09:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:29,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:29,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:29,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:29,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:29,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:29,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:29,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:29,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:29,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:29,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:29,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:29,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:09:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:29,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:29,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:29,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:29,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:29,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:29,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:29,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:29,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:29,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:29,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:29,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:29,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:09:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:29,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:29,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:29,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:29,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:29,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:29,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:29,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:29,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:29,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:29,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:29,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:29,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 18:09:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:29,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:29,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:29,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:29,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:29,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:29,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:29,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:29,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:29,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:29,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:29,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:29,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:09:29,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:29,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:29,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:29,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:29,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:29,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:29,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:29,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:29,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:29,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:29,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:29,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:29,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:09:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:29,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:29,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:29,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:29,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:29,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:29,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:29,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:29,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:29,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:29,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:29,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 16 proven. 155 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-14 18:09:29,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581097880] [2020-10-14 18:09:29,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:09:29,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 18:09:29,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311222749] [2020-10-14 18:09:29,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 18:09:29,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:09:29,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 18:09:29,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=649, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:09:29,864 INFO L87 Difference]: Start difference. First operand 124 states and 135 transitions. Second operand 27 states. [2020-10-14 18:09:31,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:09:31,569 INFO L93 Difference]: Finished difference Result 165 states and 187 transitions. [2020-10-14 18:09:31,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 18:09:31,570 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 90 [2020-10-14 18:09:31,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:09:31,572 INFO L225 Difference]: With dead ends: 165 [2020-10-14 18:09:31,572 INFO L226 Difference]: Without dead ends: 163 [2020-10-14 18:09:31,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=129, Invalid=1431, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 18:09:31,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-14 18:09:31,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 125. [2020-10-14 18:09:31,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-14 18:09:31,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2020-10-14 18:09:31,592 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 90 [2020-10-14 18:09:31,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:09:31,592 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2020-10-14 18:09:31,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 18:09:31,592 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2020-10-14 18:09:31,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 18:09:31,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:09:31,594 INFO L422 BasicCegarLoop]: trace histogram [11, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:09:31,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 18:09:31,594 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:09:31,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:09:31,594 INFO L82 PathProgramCache]: Analyzing trace with hash -191826587, now seen corresponding path program 34 times [2020-10-14 18:09:31,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:09:31,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469724034] [2020-10-14 18:09:31,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:09:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:31,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:31,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:33,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:36,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:36,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 18:09:36,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:09:36,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 18:09:36,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:36,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 18:09:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:09:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 18:09:36,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:37,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:09:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:37,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:37,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:37,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:09:37,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:37,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:37,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:37,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:37,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:37,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:37,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:37,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:37,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 18:09:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:37,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:37,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:37,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:37,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:37,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:37,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:37,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:37,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:37,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:37,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:37,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:37,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:09:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:37,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:37,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:37,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:37,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:37,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:09:37,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:37,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:37,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:37,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:37,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:37,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:37,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:09:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:37,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:37,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:37,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:37,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:37,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:37,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:37,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:37,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:37,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:09:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:37,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:37,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:37,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:37,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:37,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:37,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:37,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:37,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:37,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:09:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:37,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:37,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:37,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:37,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:37,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:37,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:37,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:37,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:37,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:37,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:37,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:37,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:09:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:37,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:37,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:37,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:37,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:37,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:37,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:37,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:37,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:37,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 18:09:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:37,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:37,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:37,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:37,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:37,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:37,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:37,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:37,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:37,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:37,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:37,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:37,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 18:09:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:37,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:37,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:37,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:37,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:37,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:09:37,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:37,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:37,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:37,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:37,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:37,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 16 proven. 166 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-14 18:09:37,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469724034] [2020-10-14 18:09:37,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:09:37,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 18:09:37,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364146467] [2020-10-14 18:09:37,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 18:09:37,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:09:37,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 18:09:37,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=699, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:09:37,388 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand 28 states. [2020-10-14 18:09:39,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:09:39,132 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2020-10-14 18:09:39,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 18:09:39,132 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 91 [2020-10-14 18:09:39,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:09:39,134 INFO L225 Difference]: With dead ends: 135 [2020-10-14 18:09:39,134 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 18:09:39,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=133, Invalid=1507, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 18:09:39,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 18:09:39,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 99. [2020-10-14 18:09:39,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 18:09:39,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2020-10-14 18:09:39,148 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 91 [2020-10-14 18:09:39,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:09:39,148 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2020-10-14 18:09:39,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 18:09:39,148 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2020-10-14 18:09:39,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 18:09:39,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:09:39,149 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:09:39,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 18:09:39,150 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:09:39,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:09:39,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1919414124, now seen corresponding path program 35 times [2020-10-14 18:09:39,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:09:39,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334827072] [2020-10-14 18:09:39,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:09:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:39,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:39,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:42,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:42,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 18:09:42,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:09:42,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3026 [2020-10-14 18:09:42,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:42,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:42,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:09:42,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:09:42,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 18:09:42,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:42,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:09:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:42,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:42,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:42,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:09:42,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:42,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:42,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:42,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:42,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:42,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:42,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:42,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:42,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 18:09:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:42,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:42,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:42,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:42,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:42,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:42,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:42,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:42,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:42,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:42,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:42,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:42,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:09:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:42,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:42,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:42,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:42,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:42,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:42,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:42,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:42,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:42,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:42,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:42,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:42,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:09:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:42,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:42,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:42,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:42,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:42,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:42,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:42,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:42,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:42,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:09:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:42,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:42,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:42,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:42,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:42,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:42,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:42,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:42,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:42,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:09:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:42,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:42,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:42,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:42,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:42,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:42,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:42,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:42,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:42,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 18:09:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:42,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:42,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:42,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:42,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:42,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:42,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:42,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:42,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:42,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:42,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:42,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:42,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:09:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:42,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:42,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:42,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:42,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:42,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:42,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:42,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:42,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:42,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:42,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:42,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:42,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:09:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:42,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:42,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:42,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:42,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:42,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:42,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:42,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:42,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:42,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 18:09:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:42,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:42,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:42,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:42,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:42,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:42,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:42,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:42,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:42,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:42,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:42,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:09:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 18 proven. 45 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-14 18:09:42,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334827072] [2020-10-14 18:09:42,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:09:42,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:09:42,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830641050] [2020-10-14 18:09:42,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:09:42,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:09:42,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:09:42,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:09:42,317 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 13 states. [2020-10-14 18:09:42,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:09:42,442 INFO L93 Difference]: Finished difference Result 183 states and 187 transitions. [2020-10-14 18:09:42,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 18:09:42,443 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 96 [2020-10-14 18:09:42,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:09:42,444 INFO L225 Difference]: With dead ends: 183 [2020-10-14 18:09:42,444 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 18:09:42,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:09:42,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 18:09:42,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-10-14 18:09:42,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 18:09:42,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2020-10-14 18:09:42,461 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 96 [2020-10-14 18:09:42,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:09:42,461 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2020-10-14 18:09:42,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:09:42,461 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2020-10-14 18:09:42,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 18:09:42,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:09:42,462 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:09:42,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 18:09:42,463 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:09:42,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:09:42,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1635575752, now seen corresponding path program 36 times [2020-10-14 18:09:42,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:09:42,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918248082] [2020-10-14 18:09:42,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:09:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:42,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:42,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:46,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:46,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 18:09:46,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:09:46,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3554 [2020-10-14 18:09:46,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:46,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:09:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 18:09:46,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 18:09:46,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:46,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:09:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:46,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:46,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:46,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:09:46,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:46,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:46,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:46,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:46,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:46,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:46,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:46,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:46,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:09:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:46,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:46,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:46,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:46,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:46,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:46,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:46,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:46,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:46,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:46,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:46,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:46,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 18:09:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:46,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:46,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:46,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:46,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:46,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:46,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:46,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:46,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:46,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:09:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:46,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:46,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:46,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:46,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:46,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:46,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:46,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:46,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:46,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:46,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:46,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:09:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:46,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:46,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:46,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:46,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:46,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:46,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:46,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:46,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:46,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:09:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:46,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:46,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:46,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:46,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:46,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:46,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:46,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:46,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:46,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:46,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:46,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:46,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 18:09:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:46,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:46,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:46,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:46,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:46,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:46,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:46,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:46,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:46,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:09:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:46,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:46,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:46,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:46,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:46,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:46,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:46,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:46,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:46,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:46,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:46,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:46,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:09:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:46,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:46,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:46,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:46,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:46,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:46,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:46,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:46,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:46,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:09:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:46,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:46,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:46,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:46,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:46,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:09:46,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:46,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:46,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:46,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:09:46,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:46,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 18 proven. 45 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2020-10-14 18:09:46,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918248082] [2020-10-14 18:09:46,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:09:46,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:09:46,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400007575] [2020-10-14 18:09:46,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:09:46,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:09:46,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:09:46,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:09:46,163 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand 13 states. [2020-10-14 18:09:46,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:09:46,379 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2020-10-14 18:09:46,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 18:09:46,380 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 97 [2020-10-14 18:09:46,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:09:46,381 INFO L225 Difference]: With dead ends: 177 [2020-10-14 18:09:46,382 INFO L226 Difference]: Without dead ends: 105 [2020-10-14 18:09:46,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:09:46,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-14 18:09:46,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2020-10-14 18:09:46,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 18:09:46,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2020-10-14 18:09:46,399 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 97 [2020-10-14 18:09:46,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:09:46,400 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2020-10-14 18:09:46,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:09:46,400 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2020-10-14 18:09:46,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 18:09:46,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:09:46,401 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:09:46,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 18:09:46,401 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:09:46,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:09:46,402 INFO L82 PathProgramCache]: Analyzing trace with hash 134922123, now seen corresponding path program 37 times [2020-10-14 18:09:46,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:09:46,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779959727] [2020-10-14 18:09:46,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:09:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:46,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:46,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:48,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:51,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:51,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 18:09:51,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:09:51,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 18:09:51,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:51,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:51,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 18:09:51,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:09:51,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 18:09:51,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:52,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:09:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:52,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:52,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:52,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:09:52,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:52,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:52,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:52,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:52,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:52,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:52,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:52,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:52,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 18:09:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:52,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:52,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:52,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:52,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:09:52,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:52,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:52,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:52,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:09:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:52,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:52,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:52,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:52,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:52,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:09:52,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:52,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:52,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:52,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:09:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:52,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:52,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:52,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:52,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:52,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:09:52,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:52,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:52,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:52,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:52,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:09:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:52,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:52,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:52,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:52,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:52,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:09:52,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:52,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:52,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:52,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:52,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:52,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:52,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:09:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:52,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:52,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:52,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:52,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:52,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:09:52,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:52,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:52,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:52,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:52,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:52,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:52,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:09:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:52,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:52,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:52,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:52,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:52,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:09:52,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:52,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:52,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:52,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 18:09:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:52,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:52,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:52,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:52,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:52,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:09:52,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:52,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:52,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:52,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:52,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:52,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:52,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 18:09:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:52,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:52,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:52,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:52,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:52,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:09:52,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:52,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:52,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:52,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:52,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:52,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:52,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 18:09:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:52,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:52,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:52,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:52,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:52,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:09:52,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:52,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:52,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:52,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:52,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:09:52,189 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 18 proven. 181 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-14 18:09:52,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779959727] [2020-10-14 18:09:52,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:09:52,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 18:09:52,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693493503] [2020-10-14 18:09:52,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 18:09:52,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:09:52,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 18:09:52,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:09:52,191 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 28 states. [2020-10-14 18:09:53,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:09:53,709 INFO L93 Difference]: Finished difference Result 142 states and 155 transitions. [2020-10-14 18:09:53,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 18:09:53,710 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 98 [2020-10-14 18:09:53,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:09:53,711 INFO L225 Difference]: With dead ends: 142 [2020-10-14 18:09:53,711 INFO L226 Difference]: Without dead ends: 140 [2020-10-14 18:09:53,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=112, Invalid=1528, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 18:09:53,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-14 18:09:53,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2020-10-14 18:09:53,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-14 18:09:53,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 148 transitions. [2020-10-14 18:09:53,737 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 148 transitions. Word has length 98 [2020-10-14 18:09:53,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:09:53,738 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 148 transitions. [2020-10-14 18:09:53,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 18:09:53,738 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 148 transitions. [2020-10-14 18:09:53,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 18:09:53,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:09:53,739 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:09:53,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 18:09:53,740 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:09:53,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:09:53,740 INFO L82 PathProgramCache]: Analyzing trace with hash 859299880, now seen corresponding path program 38 times [2020-10-14 18:09:53,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:09:53,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526734600] [2020-10-14 18:09:53,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:09:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:53,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:53,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:56,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:58,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:58,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 18:09:58,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:09:58,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 18:09:58,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:58,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:58,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 18:09:58,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:09:58,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 18:09:58,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:09:59,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:09:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:59,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:59,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:59,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:09:59,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:59,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:09:59,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:59,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:09:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:09:59,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:09:59,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:09:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:59,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:59,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:59,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:59,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:59,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:09:59,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:59,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:59,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:59,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:59,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:59,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:09:59,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:09:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:59,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:59,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:59,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:59,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:59,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:09:59,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:59,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:59,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:59,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:09:59,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:09:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:59,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:59,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:59,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:59,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:59,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:09:59,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:59,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:59,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:59,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:59,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:59,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:09:59,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:09:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:59,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:59,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:59,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:59,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:59,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:09:59,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:59,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:59,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:59,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:59,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:59,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:09:59,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 18:09:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:59,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:59,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:59,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:59,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:59,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:09:59,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:59,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:59,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:09:59,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:09:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:59,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:59,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:59,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:59,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:59,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:09:59,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:59,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:59,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:09:59,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:09:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:59,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:59,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:59,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:59,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:59,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:09:59,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:59,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:59,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:09:59,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:09:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:59,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:59,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:59,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:59,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:59,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:09:59,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:59,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:59,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:59,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:09:59,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 18:09:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:09:59,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:09:59,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:09:59,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:09:59,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:09:59,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:09:59,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:09:59,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:09:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:09:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:09:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:09:59,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:09:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 18 proven. 192 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-14 18:09:59,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526734600] [2020-10-14 18:09:59,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:09:59,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 18:09:59,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621824870] [2020-10-14 18:09:59,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 18:09:59,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:09:59,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 18:09:59,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=755, Unknown=0, NotChecked=0, Total=812 [2020-10-14 18:09:59,998 INFO L87 Difference]: Start difference. First operand 136 states and 148 transitions. Second operand 29 states. [2020-10-14 18:10:02,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:10:02,475 INFO L93 Difference]: Finished difference Result 180 states and 204 transitions. [2020-10-14 18:10:02,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 18:10:02,476 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 99 [2020-10-14 18:10:02,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:10:02,477 INFO L225 Difference]: With dead ends: 180 [2020-10-14 18:10:02,477 INFO L226 Difference]: Without dead ends: 178 [2020-10-14 18:10:02,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=139, Invalid=1667, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 18:10:02,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-14 18:10:02,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 137. [2020-10-14 18:10:02,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-14 18:10:02,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 150 transitions. [2020-10-14 18:10:02,499 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 150 transitions. Word has length 99 [2020-10-14 18:10:02,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:10:02,499 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 150 transitions. [2020-10-14 18:10:02,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 18:10:02,499 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 150 transitions. [2020-10-14 18:10:02,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 18:10:02,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:10:02,500 INFO L422 BasicCegarLoop]: trace histogram [12, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:10:02,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 18:10:02,501 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:10:02,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:10:02,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1840173867, now seen corresponding path program 39 times [2020-10-14 18:10:02,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:10:02,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998904066] [2020-10-14 18:10:02,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:10:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:02,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:02,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:05,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:07,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:07,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 18:10:07,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:10:07,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 18:10:07,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:07,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:07,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 18:10:07,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:10:07,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 18:10:07,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:08,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:10:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:08,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:08,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:08,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:10:08,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:08,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:10:08,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:08,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:08,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:08,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:08,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:08,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:08,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 18:10:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:08,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:08,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:08,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:08,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:08,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:10:08,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:08,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:08,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:08,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:08,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:08,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:08,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 18:10:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:08,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:08,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:08,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:08,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:08,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:10:08,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:08,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:08,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:08,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:08,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:08,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:10:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:08,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:08,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:08,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:08,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:08,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:10:08,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:08,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:08,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:08,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:08,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:08,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:08,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:10:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:08,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:08,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:08,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:08,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:08,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:10:08,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:08,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:08,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:08,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:08,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 18:10:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:08,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:08,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:08,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:08,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:08,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:10:08,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:08,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:08,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:08,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:08,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:10:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:08,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:08,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:08,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:08,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:08,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:10:08,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:08,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:08,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:08,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:08,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:08,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:08,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:10:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:08,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:08,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:08,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:08,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:08,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:10:08,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:08,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:08,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:08,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:10:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:08,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:08,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:08,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:08,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:08,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:10:08,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:08,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:08,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:08,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:08,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:08,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:08,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 18:10:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:08,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:08,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:08,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:08,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:08,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:10:08,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:08,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:08,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:08,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:08,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:08,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:08,797 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 18 proven. 204 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-14 18:10:08,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998904066] [2020-10-14 18:10:08,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:10:08,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 18:10:08,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971520688] [2020-10-14 18:10:08,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 18:10:08,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:10:08,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 18:10:08,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=806, Unknown=0, NotChecked=0, Total=870 [2020-10-14 18:10:08,803 INFO L87 Difference]: Start difference. First operand 137 states and 150 transitions. Second operand 30 states. [2020-10-14 18:10:10,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:10:10,764 INFO L93 Difference]: Finished difference Result 147 states and 160 transitions. [2020-10-14 18:10:10,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 18:10:10,764 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 100 [2020-10-14 18:10:10,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:10:10,765 INFO L225 Difference]: With dead ends: 147 [2020-10-14 18:10:10,765 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 18:10:10,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=146, Invalid=1746, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 18:10:10,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 18:10:10,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 108. [2020-10-14 18:10:10,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-14 18:10:10,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2020-10-14 18:10:10,781 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 100 [2020-10-14 18:10:10,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:10:10,781 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2020-10-14 18:10:10,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 18:10:10,781 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2020-10-14 18:10:10,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 18:10:10,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:10:10,782 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:10:10,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 18:10:10,783 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:10:10,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:10:10,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1866781210, now seen corresponding path program 40 times [2020-10-14 18:10:10,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:10:10,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550569018] [2020-10-14 18:10:10,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:10:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:10,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:10,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:15,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:15,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 18:10:15,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:10:15,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4867 [2020-10-14 18:10:15,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:15,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:15,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:10:15,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:10:15,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 18:10:15,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:15,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:10:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:15,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:15,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:15,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:10:15,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:15,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:15,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:15,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:15,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:15,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 18:10:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:15,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:15,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:15,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:15,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:15,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:10:15,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:15,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:15,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:15,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:15,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:15,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:15,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:10:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:15,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:15,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:15,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:15,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:15,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:10:15,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:15,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:15,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:15,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:10:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:15,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:15,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:15,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:15,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:15,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:10:15,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:15,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:15,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:15,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:10:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:15,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:15,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:15,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:15,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:15,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:10:15,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:15,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:15,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:15,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:15,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:15,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:15,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:10:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:15,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:15,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:15,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:15,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:15,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:10:15,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:15,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:15,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:15,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:10:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:15,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:15,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:15,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:15,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:15,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:10:15,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:15,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:15,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:15,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:15,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:15,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:15,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 18:10:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:15,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:15,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:15,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:15,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:15,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:10:15,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:15,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:15,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:15,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:15,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:15,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:15,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 18:10:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:15,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:15,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:15,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:15,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:15,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:10:15,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:15,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:15,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:15,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:15,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:15,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:15,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 18:10:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:15,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:15,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:15,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:15,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:15,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:15,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:15,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:15,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:15,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:15,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:15,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:15,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:10:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:15,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:15,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:15,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:15,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:15,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:15,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:15,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:15,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:15,814 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 20 proven. 55 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2020-10-14 18:10:15,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550569018] [2020-10-14 18:10:15,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:10:15,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:10:15,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799512681] [2020-10-14 18:10:15,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:10:15,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:10:15,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:10:15,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:10:15,816 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand 14 states. [2020-10-14 18:10:15,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:10:15,915 INFO L93 Difference]: Finished difference Result 200 states and 204 transitions. [2020-10-14 18:10:15,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:10:15,915 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 105 [2020-10-14 18:10:15,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:10:15,916 INFO L225 Difference]: With dead ends: 200 [2020-10-14 18:10:15,916 INFO L226 Difference]: Without dead ends: 109 [2020-10-14 18:10:15,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:10:15,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-14 18:10:15,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-14 18:10:15,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 18:10:15,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2020-10-14 18:10:15,936 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 105 [2020-10-14 18:10:15,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:10:15,937 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2020-10-14 18:10:15,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:10:15,937 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2020-10-14 18:10:15,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 18:10:15,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:10:15,938 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:10:15,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 18:10:15,938 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:10:15,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:10:15,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1210178826, now seen corresponding path program 41 times [2020-10-14 18:10:15,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:10:15,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988269149] [2020-10-14 18:10:15,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:10:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:15,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:16,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:20,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:20,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 18:10:20,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:10:20,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 18:10:20,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:20,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:20,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:10:20,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 18:10:20,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 18:10:20,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:21,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:10:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:21,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:21,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:21,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:10:21,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:21,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:21,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:21,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:21,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:21,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:10:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:21,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:21,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:21,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:21,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:21,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:10:21,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:21,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:21,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:21,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:21,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:21,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:21,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:10:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:21,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:21,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:21,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:21,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:21,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:10:21,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:21,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:21,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:21,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:21,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:21,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:21,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:10:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:21,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:21,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:21,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:21,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:21,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:21,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:21,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:21,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:21,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:21,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:21,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:21,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:10:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:21,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:21,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:21,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:21,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:21,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:21,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:21,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:21,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:21,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:21,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:21,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 18:10:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:21,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:21,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:21,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:21,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:21,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:21,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:21,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:21,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:21,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:21,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:21,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:21,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:10:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:21,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:21,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:21,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:21,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:21,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:21,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:21,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:21,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:21,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:21,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:21,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:21,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:10:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:21,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:21,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:21,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:21,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:21,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:21,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:21,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:21,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:21,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:21,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:21,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:21,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:10:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:21,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:21,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:21,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:21,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:21,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:21,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:21,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:21,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:21,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:21,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:21,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:21,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 18:10:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:21,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:21,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:21,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:21,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:21,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:21,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:21,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:21,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:21,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:21,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:21,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:21,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:10:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:21,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:21,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:21,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:21,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:21,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:21,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:21,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:21,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:21,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:21,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:21,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:21,131 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 20 proven. 55 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2020-10-14 18:10:21,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988269149] [2020-10-14 18:10:21,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:10:21,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:10:21,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540780582] [2020-10-14 18:10:21,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:10:21,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:10:21,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:10:21,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:10:21,134 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 14 states. [2020-10-14 18:10:21,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:10:21,407 INFO L93 Difference]: Finished difference Result 193 states and 197 transitions. [2020-10-14 18:10:21,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:10:21,408 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 106 [2020-10-14 18:10:21,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:10:21,409 INFO L225 Difference]: With dead ends: 193 [2020-10-14 18:10:21,409 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 18:10:21,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:10:21,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 18:10:21,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 110. [2020-10-14 18:10:21,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-14 18:10:21,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2020-10-14 18:10:21,434 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 106 [2020-10-14 18:10:21,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:10:21,434 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2020-10-14 18:10:21,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:10:21,435 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2020-10-14 18:10:21,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 18:10:21,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:10:21,435 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:10:21,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 18:10:21,436 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:10:21,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:10:21,436 INFO L82 PathProgramCache]: Analyzing trace with hash -116275195, now seen corresponding path program 42 times [2020-10-14 18:10:21,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:10:21,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725765776] [2020-10-14 18:10:21,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:10:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:21,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:21,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:25,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:26,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:26,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 18:10:26,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:10:26,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 18:10:26,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:26,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:26,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 18:10:26,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:10:26,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 18:10:26,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:27,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:10:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:27,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:27,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:27,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:10:27,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:27,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:27,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:27,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:27,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:27,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:27,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:27,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:27,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 18:10:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:27,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:27,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:27,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:27,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:27,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:27,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:27,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:27,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:27,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:27,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:27,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:27,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 18:10:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:27,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:27,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:27,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:27,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:27,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:27,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:27,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:27,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:27,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:27,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:27,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:27,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:10:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:27,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:27,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:27,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:27,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:27,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:27,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:27,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:27,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:27,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:27,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:27,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:10:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:27,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:27,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:27,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:27,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:27,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:10:27,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:27,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:27,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:27,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:27,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:27,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:27,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 18:10:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:27,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:27,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:27,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:27,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:27,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:27,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:27,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:27,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:27,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:10:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:27,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:27,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:27,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:27,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:27,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:27,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:27,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:27,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:27,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:10:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:27,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:27,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:27,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:27,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:27,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:27,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:27,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:27,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:27,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:27,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:27,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:27,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:10:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:27,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:27,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:27,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:27,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:27,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:10:27,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:27,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:27,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:27,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:27,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:27,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:27,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 18:10:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:27,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:27,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:27,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:27,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:27,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:27,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:27,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:27,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:27,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:27,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:27,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:27,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 18:10:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:27,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:27,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:27,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:27,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:27,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:10:27,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:27,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:27,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 20 proven. 221 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-14 18:10:27,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725765776] [2020-10-14 18:10:27,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:10:27,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 18:10:27,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442261207] [2020-10-14 18:10:27,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 18:10:27,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:10:27,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 18:10:27,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=812, Unknown=0, NotChecked=0, Total=870 [2020-10-14 18:10:27,394 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand 30 states. [2020-10-14 18:10:29,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:10:29,287 INFO L93 Difference]: Finished difference Result 154 states and 168 transitions. [2020-10-14 18:10:29,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 18:10:29,288 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 107 [2020-10-14 18:10:29,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:10:29,289 INFO L225 Difference]: With dead ends: 154 [2020-10-14 18:10:29,289 INFO L226 Difference]: Without dead ends: 152 [2020-10-14 18:10:29,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=118, Invalid=1774, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 18:10:29,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-14 18:10:29,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 148. [2020-10-14 18:10:29,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-14 18:10:29,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 161 transitions. [2020-10-14 18:10:29,321 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 161 transitions. Word has length 107 [2020-10-14 18:10:29,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:10:29,321 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 161 transitions. [2020-10-14 18:10:29,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 18:10:29,321 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 161 transitions. [2020-10-14 18:10:29,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 18:10:29,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:10:29,323 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:10:29,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 18:10:29,323 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:10:29,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:10:29,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1713323114, now seen corresponding path program 43 times [2020-10-14 18:10:29,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:10:29,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051418378] [2020-10-14 18:10:29,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:10:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:29,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:29,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:33,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:34,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:34,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 18:10:34,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:10:34,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 18:10:34,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:34,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:34,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 18:10:34,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:10:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 18:10:34,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:35,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:10:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:35,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:35,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:35,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:10:35,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:35,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:35,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:35,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:35,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:35,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:35,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:35,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:35,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:10:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:35,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:35,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:35,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:35,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:35,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:10:35,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:35,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:35,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:35,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:35,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:35,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:35,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:10:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:35,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:35,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:35,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:35,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:35,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:10:35,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:35,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:35,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:35,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:35,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:35,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:35,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:10:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:35,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:35,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:35,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:35,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:35,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:10:35,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:35,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:35,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:35,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:35,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:35,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:35,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:10:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:35,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:35,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:35,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:35,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:35,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:10:35,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:35,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:35,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:35,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:10:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:35,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:35,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:35,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:35,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:35,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:10:35,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:35,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:35,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:35,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 18:10:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:35,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:35,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:35,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:35,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:35,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:10:35,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:35,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:35,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:35,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 18:10:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:35,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:35,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:35,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:35,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:35,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:10:35,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:35,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:35,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:35,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:35,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:35,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:35,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 18:10:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:35,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:35,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:35,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:35,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:35,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:10:35,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:35,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:35,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:35,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:35,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:35,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:35,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:10:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:35,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:35,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:35,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:35,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:35,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:10:35,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:35,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:35,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:35,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:35,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:35,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:35,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 18:10:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:35,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:35,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:35,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:35,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:35,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:10:35,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:35,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:35,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:35,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:35,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:35,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 20 proven. 233 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-14 18:10:35,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051418378] [2020-10-14 18:10:35,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:10:35,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 18:10:35,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83903517] [2020-10-14 18:10:35,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 18:10:35,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:10:35,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 18:10:35,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=869, Unknown=0, NotChecked=0, Total=930 [2020-10-14 18:10:35,477 INFO L87 Difference]: Start difference. First operand 148 states and 161 transitions. Second operand 31 states. [2020-10-14 18:10:37,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:10:37,607 INFO L93 Difference]: Finished difference Result 192 states and 217 transitions. [2020-10-14 18:10:37,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 18:10:37,608 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 108 [2020-10-14 18:10:37,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:10:37,610 INFO L225 Difference]: With dead ends: 192 [2020-10-14 18:10:37,610 INFO L226 Difference]: Without dead ends: 190 [2020-10-14 18:10:37,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=132, Invalid=2030, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 18:10:37,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-14 18:10:37,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 149. [2020-10-14 18:10:37,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-14 18:10:37,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2020-10-14 18:10:37,636 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 108 [2020-10-14 18:10:37,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:10:37,636 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2020-10-14 18:10:37,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 18:10:37,637 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2020-10-14 18:10:37,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 18:10:37,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:10:37,637 INFO L422 BasicCegarLoop]: trace histogram [13, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:10:37,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 18:10:37,638 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:10:37,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:10:37,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1698671451, now seen corresponding path program 44 times [2020-10-14 18:10:37,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:10:37,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207318087] [2020-10-14 18:10:37,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:10:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:37,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:37,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:42,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:42,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:42,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 18:10:42,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:10:42,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-14 18:10:42,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:42,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:42,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 18:10:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:10:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 18:10:42,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:43,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:10:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:43,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:43,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:43,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:10:43,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:43,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:43,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:43,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:43,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:43,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:43,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:43,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:43,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 18:10:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:43,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:43,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:43,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:43,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:43,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:10:43,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:43,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:43,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:43,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:43,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:43,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:43,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:10:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:43,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:43,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:43,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:43,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:43,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:43,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:43,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:43,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:43,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:43,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:43,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:43,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 18:10:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:43,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:43,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:43,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:43,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:43,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:10:43,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:43,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:43,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:43,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:43,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:43,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:43,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 18:10:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:43,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:43,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:43,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:43,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:43,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:43,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:43,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:43,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:43,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:43,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:43,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:43,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:10:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:43,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:43,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:43,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:43,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:43,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:43,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:43,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:43,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:43,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:43,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:43,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:43,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:10:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:43,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:43,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:43,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:43,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:43,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:43,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:43,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:43,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:43,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:43,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:43,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:43,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:10:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:43,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:43,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:43,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:43,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:43,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:43,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:43,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:43,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:43,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:43,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:43,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:43,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 18:10:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:43,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:43,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:43,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:43,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:43,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:10:43,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:43,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:43,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:43,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:43,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:43,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:43,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 18:10:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:43,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:43,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:43,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:43,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:43,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:43,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:43,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:43,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:43,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:43,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:43,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:43,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:10:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:43,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:43,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:43,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:43,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:43,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:43,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:43,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:10:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:10:43,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:43,881 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 20 proven. 246 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-14 18:10:43,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207318087] [2020-10-14 18:10:43,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:10:43,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 18:10:43,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848181284] [2020-10-14 18:10:43,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 18:10:43,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:10:43,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 18:10:43,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=927, Unknown=0, NotChecked=0, Total=992 [2020-10-14 18:10:43,883 INFO L87 Difference]: Start difference. First operand 149 states and 163 transitions. Second operand 32 states. [2020-10-14 18:10:46,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:10:46,502 INFO L93 Difference]: Finished difference Result 159 states and 173 transitions. [2020-10-14 18:10:46,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 18:10:46,503 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 109 [2020-10-14 18:10:46,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:10:46,505 INFO L225 Difference]: With dead ends: 159 [2020-10-14 18:10:46,505 INFO L226 Difference]: Without dead ends: 157 [2020-10-14 18:10:46,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=148, Invalid=1922, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 18:10:46,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-14 18:10:46,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 117. [2020-10-14 18:10:46,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 18:10:46,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2020-10-14 18:10:46,529 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 109 [2020-10-14 18:10:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:10:46,530 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2020-10-14 18:10:46,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 18:10:46,530 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2020-10-14 18:10:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 18:10:46,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:10:46,531 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:10:46,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 18:10:46,531 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:10:46,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:10:46,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1149929516, now seen corresponding path program 45 times [2020-10-14 18:10:46,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:10:46,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710017291] [2020-10-14 18:10:46,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:10:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:46,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:46,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:51,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:51,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 18:10:51,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:10:51,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:10:51,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:51,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:10:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 18:10:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 18:10:51,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:51,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:10:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:51,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:51,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:51,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:10:51,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:51,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:51,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:51,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:51,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:51,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:51,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:51,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 18:10:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:51,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:51,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:51,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:51,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:51,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:51,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:51,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:51,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:51,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:51,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:51,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:51,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 18:10:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:51,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:51,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:51,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:51,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:51,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:51,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:51,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:51,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:51,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:51,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:51,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:51,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:10:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:51,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:51,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:51,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:51,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:51,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:51,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:51,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:51,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:51,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:10:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:51,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:51,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:51,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:51,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:51,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:51,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:51,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:51,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:51,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 18:10:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:51,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:51,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:51,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:51,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:51,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:51,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:51,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:51,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:51,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:51,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:51,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:51,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:10:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:51,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:51,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:51,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:51,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:51,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:51,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:51,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:51,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:51,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:51,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:10:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:51,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:51,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:51,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:51,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:51,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:51,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:51,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:51,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:51,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:51,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:51,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:51,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:10:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:51,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:51,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:51,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:51,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:51,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:51,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:51,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:51,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:51,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 18:10:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:51,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:51,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:51,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:51,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:51,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:51,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:51,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:51,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:51,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:51,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:51,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:51,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 18:10:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:51,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:51,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:51,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:51,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:51,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:10:51,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:51,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:51,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:51,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:51,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:51,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:10:51,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 18:10:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:51,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:51,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:51,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:51,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:51,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:51,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:51,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:51,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:51,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:51,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:51,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:51,811 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 22 proven. 66 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2020-10-14 18:10:51,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710017291] [2020-10-14 18:10:51,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:10:51,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:10:51,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663659384] [2020-10-14 18:10:51,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:10:51,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:10:51,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:10:51,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:10:51,813 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand 15 states. [2020-10-14 18:10:52,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:10:52,177 INFO L93 Difference]: Finished difference Result 222 states and 228 transitions. [2020-10-14 18:10:52,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 18:10:52,179 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 114 [2020-10-14 18:10:52,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:10:52,180 INFO L225 Difference]: With dead ends: 222 [2020-10-14 18:10:52,180 INFO L226 Difference]: Without dead ends: 123 [2020-10-14 18:10:52,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:10:52,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-14 18:10:52,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2020-10-14 18:10:52,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-14 18:10:52,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2020-10-14 18:10:52,202 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 114 [2020-10-14 18:10:52,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:10:52,203 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2020-10-14 18:10:52,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:10:52,203 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2020-10-14 18:10:52,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 18:10:52,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:10:52,204 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:10:52,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 18:10:52,204 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:10:52,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:10:52,205 INFO L82 PathProgramCache]: Analyzing trace with hash -112567733, now seen corresponding path program 46 times [2020-10-14 18:10:52,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:10:52,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975221461] [2020-10-14 18:10:52,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:10:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:52,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:52,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:57,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:57,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 18:10:57,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:10:57,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 18:10:57,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:57,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:57,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:10:57,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 18:10:57,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 18:10:57,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:57,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:10:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:57,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:57,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:57,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:10:57,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:57,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:57,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:57,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:10:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:57,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:57,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 18:10:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:57,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:57,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:57,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:57,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:57,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:10:57,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:57,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:57,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:57,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:10:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:57,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:57,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:57,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:57,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:57,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:10:57,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:57,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:57,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:57,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:57,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:57,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:57,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 18:10:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:57,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:57,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:57,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:57,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:57,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:10:57,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:57,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:57,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:57,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:57,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:57,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:57,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 18:10:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:57,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:57,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:57,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:57,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:57,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:10:57,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:57,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:57,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:57,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:57,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:57,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:57,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:10:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:57,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:57,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:57,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:57,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:57,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:10:57,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:57,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:57,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:57,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:10:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:57,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:57,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:57,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:57,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:57,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:10:57,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:57,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:57,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:57,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:10:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:57,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:57,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:57,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:57,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:57,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:57,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:57,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:57,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:57,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:57,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:57,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:57,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 18:10:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:57,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:57,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:57,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:57,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:57,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:57,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:57,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:57,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:57,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:57,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 18:10:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:57,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:57,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:57,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:57,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:57,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:10:57,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:57,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:57,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:57,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:57,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:57,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:57,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:10:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:57,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:57,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:57,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:57,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:57,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:10:57,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:57,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:57,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:57,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:57,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:57,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:57,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 18:10:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:57,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:57,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:10:57,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:10:57,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:10:57,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:10:57,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:10:57,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:10:57,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:10:57,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:10:57,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:10:57,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:10:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 22 proven. 78 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2020-10-14 18:10:57,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975221461] [2020-10-14 18:10:57,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:10:57,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:10:57,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847822157] [2020-10-14 18:10:57,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:10:57,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:10:57,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:10:57,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:10:57,454 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 16 states. [2020-10-14 18:10:57,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:10:57,832 INFO L93 Difference]: Finished difference Result 228 states and 235 transitions. [2020-10-14 18:10:57,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 18:10:57,833 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 116 [2020-10-14 18:10:57,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:10:57,834 INFO L225 Difference]: With dead ends: 228 [2020-10-14 18:10:57,834 INFO L226 Difference]: Without dead ends: 128 [2020-10-14 18:10:57,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:10:57,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-14 18:10:57,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 121. [2020-10-14 18:10:57,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 18:10:57,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2020-10-14 18:10:57,852 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 116 [2020-10-14 18:10:57,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:10:57,852 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2020-10-14 18:10:57,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:10:57,852 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2020-10-14 18:10:57,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 18:10:57,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:10:57,853 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:10:57,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 18:10:57,853 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:10:57,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:10:57,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1351144204, now seen corresponding path program 47 times [2020-10-14 18:10:57,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:10:57,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884280885] [2020-10-14 18:10:57,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:10:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:10:57,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:10:57,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:02,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:02,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 18:11:02,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:11:02,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 18:11:02,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:02,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:02,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:11:02,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 18:11:02,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 18:11:02,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:03,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:11:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:03,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:03,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:03,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:11:03,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:03,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:03,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:03,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:03,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:03,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:11:03,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:03,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:03,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 18:11:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:03,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:03,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:03,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:03,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:03,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:03,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:03,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:03,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:03,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:03,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:03,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:03,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:11:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:03,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:03,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:03,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:03,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:03,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:03,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:03,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:03,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:03,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:03,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:03,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:03,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:11:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:03,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:03,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:03,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:03,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:03,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:03,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:03,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:03,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:03,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:03,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:11:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:03,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:03,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:03,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:03,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:03,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:03,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:03,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:03,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:03,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:03,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:03,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:03,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 18:11:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:03,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:03,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:03,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:03,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:03,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:03,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:03,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:03,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:03,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:11:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:03,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:03,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:03,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:03,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:03,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:03,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:03,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:03,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:03,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:03,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:03,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:03,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:11:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:03,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:03,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:03,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:03,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:03,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:11:03,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:03,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:03,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:03,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:03,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:03,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:03,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:11:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:03,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:03,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:03,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:03,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:03,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:03,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:03,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:03,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:03,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 18:11:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:03,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:03,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:03,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:03,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:03,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:03,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:03,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:03,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:03,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:03,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:03,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:03,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 18:11:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:03,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:03,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:03,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:03,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:03,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:03,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:03,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:03,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:03,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:03,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:03,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:03,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 18:11:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:03,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:03,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:03,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:03,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:03,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:03,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:03,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:03,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:03,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:03,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:03,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:03,098 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2020-10-14 18:11:03,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884280885] [2020-10-14 18:11:03,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:11:03,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:11:03,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911485802] [2020-10-14 18:11:03,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:11:03,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:11:03,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:11:03,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:11:03,100 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand 17 states. [2020-10-14 18:11:03,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:11:03,480 INFO L93 Difference]: Finished difference Result 234 states and 242 transitions. [2020-10-14 18:11:03,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 18:11:03,481 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 118 [2020-10-14 18:11:03,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:11:03,483 INFO L225 Difference]: With dead ends: 234 [2020-10-14 18:11:03,483 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 18:11:03,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:11:03,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 18:11:03,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 123. [2020-10-14 18:11:03,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-14 18:11:03,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2020-10-14 18:11:03,503 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 118 [2020-10-14 18:11:03,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:11:03,503 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2020-10-14 18:11:03,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:11:03,504 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2020-10-14 18:11:03,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 18:11:03,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:11:03,505 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:11:03,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 18:11:03,505 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:11:03,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:11:03,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1681373547, now seen corresponding path program 48 times [2020-10-14 18:11:03,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:11:03,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181732002] [2020-10-14 18:11:03,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:11:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:03,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:03,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:08,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:08,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 18:11:08,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:11:08,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 18:11:08,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:08,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 18:11:08,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 18:11:08,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 18:11:08,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:08,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:11:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:08,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:08,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:08,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:11:08,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:08,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:08,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:08,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:08,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:08,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:11:08,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:08,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:11:08,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:11:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:08,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:08,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:08,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:08,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:08,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:08,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:08,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:08,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:08,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:08,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:11:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:08,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:08,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:08,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:08,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:08,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:08,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:08,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:08,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:08,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:08,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:08,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:08,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:11:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:08,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:08,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:08,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:08,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:08,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:08,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:08,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:08,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:08,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:08,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:08,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:08,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 18:11:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:08,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:08,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:08,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:08,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:08,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:08,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:08,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:08,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:08,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:08,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:08,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:08,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:11:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:08,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:08,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:08,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:08,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:08,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:08,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:08,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:08,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:08,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:08,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:08,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:08,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:11:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:08,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:08,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:08,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:08,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:08,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:08,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:08,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:08,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:08,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:11:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:08,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:08,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:08,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:08,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:08,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:08,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:08,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:08,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:08,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 18:11:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:08,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:08,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:08,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:08,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:08,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:08,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:08,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:08,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:08,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:08,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:08,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:08,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:11:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:08,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:08,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:08,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:08,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:08,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:08,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:08,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:08,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:08,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:08,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:08,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:08,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:11:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:08,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:08,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:08,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:08,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:08,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:08,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:08,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:08,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:08,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:08,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:08,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:08,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 18:11:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:08,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:08,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:08,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:08,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:08,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:08,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:08,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:08,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:08,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:08,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:08,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:08,811 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 22 proven. 105 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2020-10-14 18:11:08,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181732002] [2020-10-14 18:11:08,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:11:08,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 18:11:08,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820879203] [2020-10-14 18:11:08,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 18:11:08,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:11:08,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 18:11:08,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:11:08,812 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 18 states. [2020-10-14 18:11:09,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:11:09,194 INFO L93 Difference]: Finished difference Result 240 states and 249 transitions. [2020-10-14 18:11:09,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:11:09,195 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 120 [2020-10-14 18:11:09,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:11:09,197 INFO L225 Difference]: With dead ends: 240 [2020-10-14 18:11:09,197 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 18:11:09,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:11:09,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 18:11:09,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 125. [2020-10-14 18:11:09,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-14 18:11:09,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2020-10-14 18:11:09,215 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 120 [2020-10-14 18:11:09,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:11:09,215 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2020-10-14 18:11:09,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 18:11:09,215 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2020-10-14 18:11:09,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 18:11:09,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:11:09,216 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:11:09,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 18:11:09,217 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:11:09,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:11:09,217 INFO L82 PathProgramCache]: Analyzing trace with hash -82958868, now seen corresponding path program 49 times [2020-10-14 18:11:09,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:11:09,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426976450] [2020-10-14 18:11:09,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:11:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:09,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:09,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:14,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:14,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 18:11:14,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:11:14,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:11:14,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:14,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:14,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:11:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:11:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 18:11:14,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:14,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:11:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:14,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:14,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:14,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:11:14,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:14,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:14,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:14,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:14,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:14,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:11:14,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:14,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:14,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:11:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:14,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:14,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:14,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:14,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:14,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:14,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:14,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:14,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:14,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:14,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:14,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:14,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:11:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:14,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:14,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:14,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:14,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:14,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:14,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:14,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:14,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:14,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:14,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:14,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:14,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:11:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:14,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:14,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:14,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:14,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:14,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:14,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:14,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:14,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:14,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:14,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:14,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:14,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:11:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:14,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:14,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:14,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:14,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:14,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:14,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:14,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:14,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:14,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:14,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:14,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:14,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 18:11:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:14,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:14,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:14,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:14,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:14,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:14,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:14,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:14,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:14,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:14,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:14,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:14,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 18:11:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:14,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:14,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:14,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:14,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:14,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:14,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:14,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:14,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:14,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:14,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:14,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:14,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 18:11:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:14,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:14,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:14,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:14,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:14,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:14,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:14,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:14,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:14,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:11:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:14,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:14,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:14,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:14,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:14,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:14,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:14,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:14,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:14,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:14,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:14,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:14,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 18:11:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:14,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:14,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:14,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:14,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:14,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:14,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:14,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:14,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:14,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 18:11:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:14,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:14,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:14,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:14,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:14,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:14,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:14,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:14,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:14,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:14,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 18:11:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:14,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:14,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:14,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:14,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:14,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:14,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:14,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:14,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:14,477 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 22 proven. 120 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2020-10-14 18:11:14,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426976450] [2020-10-14 18:11:14,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:11:14,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:11:14,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276526672] [2020-10-14 18:11:14,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:11:14,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:11:14,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:11:14,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:11:14,479 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 19 states. [2020-10-14 18:11:14,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:11:14,673 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2020-10-14 18:11:14,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:11:14,674 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-14 18:11:14,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:11:14,675 INFO L225 Difference]: With dead ends: 229 [2020-10-14 18:11:14,675 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 18:11:14,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:11:14,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 18:11:14,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-10-14 18:11:14,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-14 18:11:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions. [2020-10-14 18:11:14,694 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 122 [2020-10-14 18:11:14,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:11:14,695 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 128 transitions. [2020-10-14 18:11:14,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:11:14,695 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 128 transitions. [2020-10-14 18:11:14,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 18:11:14,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:11:14,695 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:11:14,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 18:11:14,696 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:11:14,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:11:14,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1702943928, now seen corresponding path program 50 times [2020-10-14 18:11:14,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:11:14,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285558919] [2020-10-14 18:11:14,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:11:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:14,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:14,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:19,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:19,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 18:11:19,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:11:19,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 18:11:19,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:19,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:19,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:11:19,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 18:11:19,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 18:11:19,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:20,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:11:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:20,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:20,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:20,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:11:20,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:20,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:20,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:20,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:20,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:20,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:11:20,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:20,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:11:20,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:11:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:20,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:20,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:20,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:20,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:20,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:20,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:20,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:20,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:20,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:20,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:20,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:11:20,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 18:11:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:20,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:20,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:20,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:20,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:20,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:11:20,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:20,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:20,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:20,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:20,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:20,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:20,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 18:11:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:20,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:20,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:20,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:20,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:20,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:20,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:20,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:20,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:20,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:20,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:20,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:11:20,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:11:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:20,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:20,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:20,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:20,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:20,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:20,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:20,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:20,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:20,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:20,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:20,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:11:20,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:11:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:20,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:20,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:20,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:20,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:20,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:20,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:20,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:20,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:20,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:20,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:11:20,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:11:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:20,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:20,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:20,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:20,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:20,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:20,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:20,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:20,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:20,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:20,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:20,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:11:20,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 18:11:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:20,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:20,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:20,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:20,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:20,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:20,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:20,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:20,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:20,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:20,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:20,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:11:20,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 18:11:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:20,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:20,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:20,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:20,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:20,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:20,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:20,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:20,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:20,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:20,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:20,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:11:20,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:11:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:20,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:20,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:20,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:20,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:20,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:20,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:20,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:20,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:20,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:20,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:20,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:11:20,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 18:11:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:20,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:20,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:20,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:20,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:20,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:20,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:20,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:20,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:20,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:20,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:20,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:11:20,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-14 18:11:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:20,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:20,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:20,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:20,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:20,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:20,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:20,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:20,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:11:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 22 proven. 120 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2020-10-14 18:11:20,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285558919] [2020-10-14 18:11:20,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:11:20,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:11:20,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255316501] [2020-10-14 18:11:20,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:11:20,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:11:20,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:11:20,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:11:20,119 INFO L87 Difference]: Start difference. First operand 126 states and 128 transitions. Second operand 19 states. [2020-10-14 18:11:20,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:11:20,627 INFO L93 Difference]: Finished difference Result 229 states and 237 transitions. [2020-10-14 18:11:20,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:11:20,629 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 123 [2020-10-14 18:11:20,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:11:20,630 INFO L225 Difference]: With dead ends: 229 [2020-10-14 18:11:20,630 INFO L226 Difference]: Without dead ends: 143 [2020-10-14 18:11:20,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:11:20,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-14 18:11:20,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 127. [2020-10-14 18:11:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-14 18:11:20,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2020-10-14 18:11:20,653 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 123 [2020-10-14 18:11:20,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:11:20,654 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2020-10-14 18:11:20,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:11:20,654 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2020-10-14 18:11:20,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 18:11:20,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:11:20,655 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:11:20,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 18:11:20,656 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:11:20,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:11:20,656 INFO L82 PathProgramCache]: Analyzing trace with hash -341307253, now seen corresponding path program 51 times [2020-10-14 18:11:20,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:11:20,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895748362] [2020-10-14 18:11:20,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:11:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:20,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:20,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:25,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:25,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 18:11:25,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:11:25,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 18:11:25,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:25,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:25,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 18:11:25,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 18:11:25,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 18:11:25,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:25,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:11:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:25,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:25,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:25,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:11:25,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:25,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:11:25,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:25,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:25,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:25,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:11:25,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:25,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:25,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:11:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:25,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:25,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:25,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:25,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:25,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:25,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:25,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:25,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:25,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:25,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:25,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:25,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:11:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:25,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:25,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:25,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:25,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:25,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:25,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:25,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:25,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:25,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:25,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:25,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:25,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:11:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:25,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:25,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:25,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:25,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:25,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:25,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:25,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:25,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:25,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:25,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:25,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:25,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 18:11:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:25,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:25,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:25,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:25,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:25,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:25,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:25,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:25,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:25,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:25,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:25,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:25,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:11:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:25,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:25,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:25,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:25,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:25,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:25,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:25,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:25,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:25,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:25,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:25,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:25,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:11:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:25,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:25,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:25,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:25,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:25,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:25,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:25,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:25,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:25,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:25,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 18:11:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:25,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:25,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:25,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:25,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:25,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:25,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:25,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:25,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:25,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:25,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:25,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:25,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 18:11:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:25,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:25,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:25,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:25,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:25,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:25,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:25,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:25,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:25,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:25,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:25,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:11:25,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:11:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:25,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:25,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:25,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:25,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:25,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:25,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:25,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:25,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:25,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:25,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:25,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:25,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:11:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:25,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:25,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:25,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:25,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:25,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:25,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:25,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:25,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:25,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 18:11:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:25,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:25,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:25,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:25,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:25,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:11:25,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:25,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:25,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:25,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:26,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:26,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:11:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 22 proven. 136 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2020-10-14 18:11:26,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895748362] [2020-10-14 18:11:26,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:11:26,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:11:26,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340409983] [2020-10-14 18:11:26,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:11:26,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:11:26,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:11:26,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:11:26,009 INFO L87 Difference]: Start difference. First operand 127 states and 129 transitions. Second operand 20 states. [2020-10-14 18:11:26,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:11:26,489 INFO L93 Difference]: Finished difference Result 252 states and 263 transitions. [2020-10-14 18:11:26,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:11:26,490 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 124 [2020-10-14 18:11:26,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:11:26,492 INFO L225 Difference]: With dead ends: 252 [2020-10-14 18:11:26,492 INFO L226 Difference]: Without dead ends: 148 [2020-10-14 18:11:26,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:11:26,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-14 18:11:26,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 129. [2020-10-14 18:11:26,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 18:11:26,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2020-10-14 18:11:26,512 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 124 [2020-10-14 18:11:26,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:11:26,512 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2020-10-14 18:11:26,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:11:26,512 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2020-10-14 18:11:26,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 18:11:26,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:11:26,513 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:11:26,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 18:11:26,514 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:11:26,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:11:26,514 INFO L82 PathProgramCache]: Analyzing trace with hash 492339404, now seen corresponding path program 52 times [2020-10-14 18:11:26,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:11:26,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401962804] [2020-10-14 18:11:26,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:11:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:26,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:26,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:31,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:31,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 18:11:31,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:11:31,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 18:11:31,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:31,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:31,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:11:31,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:11:31,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 18:11:31,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:31,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:11:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:31,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:31,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:31,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:11:31,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:31,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:11:31,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:31,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:11:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:31,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:31,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:11:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:31,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:31,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:31,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:31,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:31,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:31,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:31,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:31,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:31,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:31,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:31,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:31,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:11:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:31,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:31,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:31,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:31,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:31,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:31,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:31,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:31,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:31,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:31,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:31,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:31,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:11:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:31,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:31,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:31,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:31,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:31,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:31,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:31,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:31,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:31,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:31,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:31,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:11:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:31,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:31,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:31,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:31,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:31,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:31,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:31,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:31,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:31,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 18:11:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:31,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:31,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:31,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:31,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:31,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:31,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:31,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:31,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:31,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:31,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:31,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:31,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 18:11:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:31,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:31,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:31,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:31,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:31,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:31,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:31,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:31,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:31,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 18:11:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:31,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:31,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:31,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:31,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:31,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:31,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:31,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:31,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:31,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:31,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:31,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:31,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:11:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:31,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:31,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:31,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:31,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:31,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:31,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:31,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:31,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:31,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:31,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:31,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 18:11:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:31,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:31,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:31,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:31,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:31,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:31,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:31,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:31,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:31,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:31,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:31,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:31,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 18:11:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:31,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:31,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:31,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:31,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:31,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:31,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:31,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:31,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:31,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:31,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:31,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:31,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 18:11:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:31,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:31,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:11:31,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:11:31,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:11:31,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:11:31,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:11:31,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:11:31,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:11:31,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:11:31,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:11:31,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:11:31,868 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 22 proven. 153 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2020-10-14 18:11:31,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401962804] [2020-10-14 18:11:31,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:11:31,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:11:31,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787329510] [2020-10-14 18:11:31,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:11:31,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:11:31,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:11:31,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:11:31,869 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand 21 states. [2020-10-14 18:11:32,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:11:32,031 INFO L93 Difference]: Finished difference Result 235 states and 239 transitions. [2020-10-14 18:11:32,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 18:11:32,032 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 126 [2020-10-14 18:11:32,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:11:32,034 INFO L225 Difference]: With dead ends: 235 [2020-10-14 18:11:32,034 INFO L226 Difference]: Without dead ends: 130 [2020-10-14 18:11:32,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:11:32,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-14 18:11:32,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-10-14 18:11:32,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-14 18:11:32,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2020-10-14 18:11:32,051 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 126 [2020-10-14 18:11:32,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:11:32,051 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2020-10-14 18:11:32,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:11:32,051 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2020-10-14 18:11:32,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 18:11:32,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:11:32,052 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:11:32,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 18:11:32,052 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:11:32,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:11:32,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1997762600, now seen corresponding path program 53 times [2020-10-14 18:11:32,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:11:32,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990308082] [2020-10-14 18:11:32,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:11:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:11:32,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:11:32,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking...