/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_copy2_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 17:48:31,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 17:48:31,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 17:48:31,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 17:48:31,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 17:48:31,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 17:48:31,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 17:48:31,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 17:48:31,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 17:48:31,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 17:48:31,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 17:48:31,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 17:48:31,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 17:48:31,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 17:48:31,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 17:48:31,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 17:48:31,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 17:48:31,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 17:48:31,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 17:48:31,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 17:48:31,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 17:48:31,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 17:48:31,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 17:48:31,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 17:48:31,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 17:48:31,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 17:48:31,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 17:48:31,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 17:48:31,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 17:48:31,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 17:48:31,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 17:48:31,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 17:48:31,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 17:48:31,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 17:48:31,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 17:48:31,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 17:48:31,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 17:48:31,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 17:48:31,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 17:48:31,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 17:48:31,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 17:48:31,201 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 17:48:31,233 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 17:48:31,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 17:48:31,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 17:48:31,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 17:48:31,234 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 17:48:31,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 17:48:31,235 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 17:48:31,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 17:48:31,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 17:48:31,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 17:48:31,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 17:48:31,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 17:48:31,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 17:48:31,240 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 17:48:31,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 17:48:31,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 17:48:31,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 17:48:31,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 17:48:31,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 17:48:31,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 17:48:31,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 17:48:31,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:48:31,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 17:48:31,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 17:48:31,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 17:48:31,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 17:48:31,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 17:48:31,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 17:48:31,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 17:48:31,245 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 17:48:31,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 17:48:31,567 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 17:48:31,570 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 17:48:31,571 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 17:48:31,572 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 17:48:31,573 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy2_ground-2.i [2020-10-14 17:48:31,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c117183f/9ee2ff6889734f97b11c7a13e385183d/FLAG15df76e5f [2020-10-14 17:48:32,029 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 17:48:32,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copy2_ground-2.i [2020-10-14 17:48:32,037 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c117183f/9ee2ff6889734f97b11c7a13e385183d/FLAG15df76e5f [2020-10-14 17:48:32,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c117183f/9ee2ff6889734f97b11c7a13e385183d [2020-10-14 17:48:32,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 17:48:32,479 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 17:48:32,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 17:48:32,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 17:48:32,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 17:48:32,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:48:32" (1/1) ... [2020-10-14 17:48:32,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1097ec73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:48:32, skipping insertion in model container [2020-10-14 17:48:32,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:48:32" (1/1) ... [2020-10-14 17:48:32,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 17:48:32,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 17:48:32,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:48:32,728 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 17:48:32,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:48:32,767 INFO L208 MainTranslator]: Completed translation [2020-10-14 17:48:32,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:48:32 WrapperNode [2020-10-14 17:48:32,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 17:48:32,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 17:48:32,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 17:48:32,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 17:48:32,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:48:32" (1/1) ... [2020-10-14 17:48:32,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:48:32" (1/1) ... [2020-10-14 17:48:32,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:48:32" (1/1) ... [2020-10-14 17:48:32,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:48:32" (1/1) ... [2020-10-14 17:48:32,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:48:32" (1/1) ... [2020-10-14 17:48:32,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:48:32" (1/1) ... [2020-10-14 17:48:32,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:48:32" (1/1) ... [2020-10-14 17:48:32,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 17:48:32,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 17:48:32,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 17:48:32,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 17:48:32,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:48:32" (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 17:48:32,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 17:48:32,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 17:48:32,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 17:48:32,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 17:48:32,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 17:48:32,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 17:48:32,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 17:48:32,955 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 17:48:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 17:48:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 17:48:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 17:48:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 17:48:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 17:48:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 17:48:33,249 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 17:48:33,249 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-14 17:48:33,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:48:33 BoogieIcfgContainer [2020-10-14 17:48:33,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 17:48:33,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 17:48:33,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 17:48:33,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 17:48:33,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:48:32" (1/3) ... [2020-10-14 17:48:33,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d80e762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:48:33, skipping insertion in model container [2020-10-14 17:48:33,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:48:32" (2/3) ... [2020-10-14 17:48:33,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d80e762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:48:33, skipping insertion in model container [2020-10-14 17:48:33,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:48:33" (3/3) ... [2020-10-14 17:48:33,261 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy2_ground-2.i [2020-10-14 17:48:33,271 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 17:48:33,277 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 17:48:33,291 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 17:48:33,310 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 17:48:33,310 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 17:48:33,311 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 17:48:33,311 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 17:48:33,311 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 17:48:33,311 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 17:48:33,311 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 17:48:33,311 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 17:48:33,326 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-14 17:48:33,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 17:48:33,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:33,331 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 17:48:33,332 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:33,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:33,337 INFO L82 PathProgramCache]: Analyzing trace with hash 415311520, now seen corresponding path program 1 times [2020-10-14 17:48:33,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:33,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167882532] [2020-10-14 17:48:33,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:33,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:33,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:33,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:33,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:33,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 17:48:33,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:33,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-14 17:48:33,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:33,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:48:33,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 17:48:33,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:33,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:33,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:33,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:33,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:33,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:48:33,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:33,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:33,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:33,942 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 17:48:33,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167882532] [2020-10-14 17:48:33,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:48:33,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 17:48:33,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964945715] [2020-10-14 17:48:33,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 17:48:33,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:33,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 17:48:33,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 17:48:33,969 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2020-10-14 17:48:34,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:34,095 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2020-10-14 17:48:34,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 17:48:34,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-14 17:48:34,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:34,105 INFO L225 Difference]: With dead ends: 56 [2020-10-14 17:48:34,105 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 17:48:34,109 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 17:48:34,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 17:48:34,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-10-14 17:48:34,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 17:48:34,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-14 17:48:34,143 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-10-14 17:48:34,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:34,143 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-14 17:48:34,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 17:48:34,144 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-14 17:48:34,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 17:48:34,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:34,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:34,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 17:48:34,146 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:34,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:34,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1878162454, now seen corresponding path program 1 times [2020-10-14 17:48:34,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:34,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335840627] [2020-10-14 17:48:34,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:34,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:34,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:34,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:34,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:35,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:35,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 17:48:35,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:48:35,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-14 17:48:35,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:35,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:48:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:35,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 17:48:35,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 17:48:35,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:35,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:35,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:35,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:35,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:35,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 17:48:35,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:35,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:35,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:35,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:35,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:35,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:35,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335840627] [2020-10-14 17:48:35,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:35,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 17:48:35,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641787577] [2020-10-14 17:48:35,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 17:48:35,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:35,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 17:48:35,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:48:35,482 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 11 states. [2020-10-14 17:48:35,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:35,806 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2020-10-14 17:48:35,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 17:48:35,808 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-14 17:48:35,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:35,812 INFO L225 Difference]: With dead ends: 49 [2020-10-14 17:48:35,812 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 17:48:35,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:48:35,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 17:48:35,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2020-10-14 17:48:35,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 17:48:35,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-14 17:48:35,842 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 21 [2020-10-14 17:48:35,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:35,842 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-14 17:48:35,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 17:48:35,843 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-14 17:48:35,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 17:48:35,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:35,847 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:35,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 17:48:35,847 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:35,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:35,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1057806260, now seen corresponding path program 2 times [2020-10-14 17:48:35,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:35,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317933750] [2020-10-14 17:48:35,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:35,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:35,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:35,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:36,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:37,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:37,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 17:48:37,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:48:37,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1162 [2020-10-14 17:48:37,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:37,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:37,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:48:37,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:37,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 17:48:37,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:37,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:37,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:37,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:37,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:37,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:37,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:37,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:37,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:37,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:37,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:37,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317933750] [2020-10-14 17:48:37,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:37,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 17:48:37,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591766347] [2020-10-14 17:48:37,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 17:48:37,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:37,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 17:48:37,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:48:37,725 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 13 states. [2020-10-14 17:48:38,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:38,146 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-14 17:48:38,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 17:48:38,147 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2020-10-14 17:48:38,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:38,151 INFO L225 Difference]: With dead ends: 51 [2020-10-14 17:48:38,152 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 17:48:38,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2020-10-14 17:48:38,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 17:48:38,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 33. [2020-10-14 17:48:38,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 17:48:38,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-14 17:48:38,167 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 23 [2020-10-14 17:48:38,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:38,167 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-14 17:48:38,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 17:48:38,167 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-14 17:48:38,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 17:48:38,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:38,169 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, 1, 1, 1, 1, 1] [2020-10-14 17:48:38,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 17:48:38,170 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:38,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:38,170 INFO L82 PathProgramCache]: Analyzing trace with hash -105243059, now seen corresponding path program 1 times [2020-10-14 17:48:38,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:38,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300027277] [2020-10-14 17:48:38,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:38,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:38,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:38,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:38,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:38,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 17:48:38,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:38,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-14 17:48:38,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:38,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:38,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:48:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 17:48:38,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:48:38,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 17:48:38,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:38,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:38,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:38,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:38,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:38,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:38,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:38,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:38,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:38,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:38,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 17:48:38,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 17:48:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:38,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:38,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:38,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:38,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:38,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:48:38,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:38,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:38,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:38,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:38,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:38,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:48:38,620 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 17:48:38,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300027277] [2020-10-14 17:48:38,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:38,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 17:48:38,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752550485] [2020-10-14 17:48:38,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 17:48:38,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:38,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 17:48:38,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:48:38,626 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 5 states. [2020-10-14 17:48:38,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:38,713 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2020-10-14 17:48:38,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 17:48:38,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-14 17:48:38,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:38,715 INFO L225 Difference]: With dead ends: 60 [2020-10-14 17:48:38,715 INFO L226 Difference]: Without dead ends: 39 [2020-10-14 17:48:38,716 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 17:48:38,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-14 17:48:38,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-10-14 17:48:38,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 17:48:38,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-10-14 17:48:38,725 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 29 [2020-10-14 17:48:38,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:38,725 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-10-14 17:48:38,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 17:48:38,726 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-10-14 17:48:38,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 17:48:38,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:38,727 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:38,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 17:48:38,728 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:38,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:38,729 INFO L82 PathProgramCache]: Analyzing trace with hash -264537527, now seen corresponding path program 2 times [2020-10-14 17:48:38,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:38,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109259406] [2020-10-14 17:48:38,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:38,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:38,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:38,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:39,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:40,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:40,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 17:48:40,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:48:40,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1389 [2020-10-14 17:48:40,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:40,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:40,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:48:40,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:40,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 17:48:40,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:40,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:40,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:40,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:40,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:40,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:40,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:40,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:40,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:40,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:40,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:40,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:40,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:40,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 17:48:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:40,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:40,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:40,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:40,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:40,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:48:40,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:40,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:40,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:40,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:40,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:40,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:40,869 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:40,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109259406] [2020-10-14 17:48:40,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:40,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 17:48:40,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936993187] [2020-10-14 17:48:40,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 17:48:40,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:40,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 17:48:40,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-14 17:48:40,872 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 16 states. [2020-10-14 17:48:41,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:41,794 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-10-14 17:48:41,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 17:48:41,795 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2020-10-14 17:48:41,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:41,796 INFO L225 Difference]: With dead ends: 51 [2020-10-14 17:48:41,796 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 17:48:41,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2020-10-14 17:48:41,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 17:48:41,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-10-14 17:48:41,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 17:48:41,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-10-14 17:48:41,805 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 33 [2020-10-14 17:48:41,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:41,806 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-10-14 17:48:41,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 17:48:41,806 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-10-14 17:48:41,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 17:48:41,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:41,808 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:41,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 17:48:41,808 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:41,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:41,808 INFO L82 PathProgramCache]: Analyzing trace with hash 566704512, now seen corresponding path program 3 times [2020-10-14 17:48:41,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:41,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553082902] [2020-10-14 17:48:41,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:41,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:41,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:41,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:42,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:42,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 17:48:42,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:42,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-10-14 17:48:42,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:42,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:42,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:48:42,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:42,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:42,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:42,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:42,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:42,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:42,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:42,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:42,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:42,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:42,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:42,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:42,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:42,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:42,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:42,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 17:48:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:42,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:42,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:42,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:42,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:42,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:42,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:42,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:42,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:42,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 17:48:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:42,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:42,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:42,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:42,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:42,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:42,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:42,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:42,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:42,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:42,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:42,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:42,440 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 17:48:42,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553082902] [2020-10-14 17:48:42,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:42,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 17:48:42,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124868548] [2020-10-14 17:48:42,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 17:48:42,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:42,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 17:48:42,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:48:42,443 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 6 states. [2020-10-14 17:48:42,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:42,517 INFO L93 Difference]: Finished difference Result 82 states and 88 transitions. [2020-10-14 17:48:42,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 17:48:42,518 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-10-14 17:48:42,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:42,519 INFO L225 Difference]: With dead ends: 82 [2020-10-14 17:48:42,519 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 17:48:42,520 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 17:48:42,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 17:48:42,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-10-14 17:48:42,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 17:48:42,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-10-14 17:48:42,531 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 41 [2020-10-14 17:48:42,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:42,531 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-10-14 17:48:42,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 17:48:42,532 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-10-14 17:48:42,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 17:48:42,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:42,533 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:42,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 17:48:42,533 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:42,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:42,534 INFO L82 PathProgramCache]: Analyzing trace with hash 381643644, now seen corresponding path program 4 times [2020-10-14 17:48:42,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:42,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257018844] [2020-10-14 17:48:42,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:42,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:42,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:42,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:43,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:44,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:44,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 17:48:44,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:48:44,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2447 [2020-10-14 17:48:44,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:44,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:48:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:44,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 17:48:44,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:45,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:45,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:45,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:45,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:45,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:45,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:45,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:45,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:45,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:45,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 17:48:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:45,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:45,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:45,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:45,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:45,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:48:45,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:45,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:45,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:45,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:45,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:45,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 17:48:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:45,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:45,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:45,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:45,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:45,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:48:45,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:45,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:45,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:45,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:45,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:45,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 17:48:45,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257018844] [2020-10-14 17:48:45,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:45,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 17:48:45,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586992476] [2020-10-14 17:48:45,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 17:48:45,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:45,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 17:48:45,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-10-14 17:48:45,944 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 18 states. [2020-10-14 17:48:46,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:46,877 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2020-10-14 17:48:46,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 17:48:46,878 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2020-10-14 17:48:46,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:46,879 INFO L225 Difference]: With dead ends: 63 [2020-10-14 17:48:46,879 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 17:48:46,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2020-10-14 17:48:46,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 17:48:46,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2020-10-14 17:48:46,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 17:48:46,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-10-14 17:48:46,900 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 45 [2020-10-14 17:48:46,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:46,900 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-10-14 17:48:46,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 17:48:46,901 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-10-14 17:48:46,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 17:48:46,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:46,904 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:46,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 17:48:46,905 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:46,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:46,905 INFO L82 PathProgramCache]: Analyzing trace with hash 191645619, now seen corresponding path program 5 times [2020-10-14 17:48:46,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:46,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884288285] [2020-10-14 17:48:46,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:46,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:46,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:46,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:48,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:48,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 17:48:48,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:48,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1445 [2020-10-14 17:48:48,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:48,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:48:48,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 17:48:48,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 17:48:48,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:48,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:48,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:48,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:48,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:48,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:48,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:48,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:48,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:48,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:48,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:48:48,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 17:48:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:48,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:48,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:48,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:48,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:48,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:48,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:48,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:48,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:48,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:48,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:48,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:48,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 17:48:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:48,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:48,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:48,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:48,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:48,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:48,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:48,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:48,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:48,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 17:48:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:48,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:48,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:48,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:48,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:48,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:48,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:48,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:48,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 17:48:48,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884288285] [2020-10-14 17:48:48,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:48,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 17:48:48,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028030982] [2020-10-14 17:48:48,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 17:48:48,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:48,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 17:48:48,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:48:48,452 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 7 states. [2020-10-14 17:48:48,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:48,523 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2020-10-14 17:48:48,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 17:48:48,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-10-14 17:48:48,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:48,524 INFO L225 Difference]: With dead ends: 104 [2020-10-14 17:48:48,525 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 17:48:48,525 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 17:48:48,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 17:48:48,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-10-14 17:48:48,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 17:48:48,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2020-10-14 17:48:48,543 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 53 [2020-10-14 17:48:48,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:48,543 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2020-10-14 17:48:48,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 17:48:48,543 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2020-10-14 17:48:48,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 17:48:48,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:48,545 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:48,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 17:48:48,545 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:48,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:48,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1172197295, now seen corresponding path program 6 times [2020-10-14 17:48:48,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:48,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795915671] [2020-10-14 17:48:48,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:48,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:48,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:48,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:50,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:52,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:52,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 17:48:52,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:48:52,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3486 [2020-10-14 17:48:52,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:52,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:52,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:48:52,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:52,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 17:48:52,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:52,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:52,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:52,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:52,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:52,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:52,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:52,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:52,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:52,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:52,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:52,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:52,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:52,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 17:48:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:52,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:52,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:52,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:52,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:52,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:52,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:52,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:52,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:52,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:52,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:52,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:52,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 17:48:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:52,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:52,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:52,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:52,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:52,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:52,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:52,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:52,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:52,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:52,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:52,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:52,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:48:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:52,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:52,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:52,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:52,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:52,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:52,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:52,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:52,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:52,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:52,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:52,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 50 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 17:48:52,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795915671] [2020-10-14 17:48:52,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:52,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 17:48:52,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339436071] [2020-10-14 17:48:52,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 17:48:52,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:52,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 17:48:52,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:48:52,868 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 21 states. [2020-10-14 17:48:53,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:53,844 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2020-10-14 17:48:53,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 17:48:53,844 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2020-10-14 17:48:53,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:53,846 INFO L225 Difference]: With dead ends: 75 [2020-10-14 17:48:53,846 INFO L226 Difference]: Without dead ends: 73 [2020-10-14 17:48:53,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2020-10-14 17:48:53,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-14 17:48:53,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2020-10-14 17:48:53,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 17:48:53,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-10-14 17:48:53,867 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 57 [2020-10-14 17:48:53,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:53,867 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-10-14 17:48:53,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 17:48:53,867 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-10-14 17:48:53,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 17:48:53,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:53,869 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:53,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 17:48:53,869 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:53,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:53,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1190573850, now seen corresponding path program 7 times [2020-10-14 17:48:53,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:53,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294993081] [2020-10-14 17:48:53,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:53,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:53,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:53,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:55,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:55,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 17:48:55,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:55,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1998 [2020-10-14 17:48:55,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:55,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:55,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:48:55,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:55,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 17:48:55,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:55,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:55,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:55,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:55,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:55,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:55,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:55,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:55,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:55,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:55,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:55,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:55,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:55,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 17:48:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:55,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:55,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:55,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:55,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:55,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:55,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:55,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:55,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:55,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:55,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:55,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:55,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 17:48:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:55,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:55,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:55,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:55,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:55,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:55,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:55,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:55,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:55,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:55,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:55,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:55,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:48:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:55,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:55,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:55,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:55,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:55,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:55,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:55,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:55,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:55,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:55,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:55,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:55,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 17:48:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:55,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:55,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:55,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:55,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:55,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:55,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:55,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:55,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:55,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:55,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:55,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:55,964 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 17:48:55,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294993081] [2020-10-14 17:48:55,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:55,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 17:48:55,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112372540] [2020-10-14 17:48:55,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 17:48:55,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:55,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 17:48:55,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 17:48:55,966 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 8 states. [2020-10-14 17:48:56,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:56,068 INFO L93 Difference]: Finished difference Result 126 states and 132 transitions. [2020-10-14 17:48:56,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 17:48:56,068 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-10-14 17:48:56,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:56,070 INFO L225 Difference]: With dead ends: 126 [2020-10-14 17:48:56,070 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 17:48:56,071 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 17:48:56,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 17:48:56,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-10-14 17:48:56,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 17:48:56,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-10-14 17:48:56,081 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 65 [2020-10-14 17:48:56,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:56,081 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-10-14 17:48:56,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 17:48:56,081 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-10-14 17:48:56,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 17:48:56,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:56,082 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:56,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 17:48:56,083 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:56,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:56,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1786259170, now seen corresponding path program 8 times [2020-10-14 17:48:56,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:56,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453409965] [2020-10-14 17:48:56,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:56,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:56,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:56,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:58,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:00,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:00,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 17:49:00,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:49:00,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4113 [2020-10-14 17:49:00,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:00,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:00,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:49:00,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:49:00,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 17:49:00,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:01,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:01,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:01,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:01,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:01,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:01,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:01,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:01,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:01,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:01,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:01,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:01,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:01,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 17:49:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:01,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:01,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:01,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:01,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:01,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:01,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:01,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:01,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:01,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:01,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:01,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:01,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 17:49:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:01,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:01,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:01,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:01,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:01,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:01,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:01,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:01,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:01,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:01,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:01,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:01,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 17:49:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:01,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:01,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:01,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:01,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:01,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:01,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:01,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:01,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:01,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:01,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:01,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:01,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 17:49:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:01,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:01,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:01,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:01,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:01,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:01,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:01,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:01,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:01,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:01,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:01,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 8 proven. 82 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:49:01,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453409965] [2020-10-14 17:49:01,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:01,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 17:49:01,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244091560] [2020-10-14 17:49:01,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 17:49:01,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:01,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 17:49:01,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:49:01,641 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 25 states. [2020-10-14 17:49:03,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:03,106 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2020-10-14 17:49:03,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 17:49:03,106 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 69 [2020-10-14 17:49:03,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:03,108 INFO L225 Difference]: With dead ends: 87 [2020-10-14 17:49:03,108 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 17:49:03,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=140, Invalid=1120, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 17:49:03,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 17:49:03,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2020-10-14 17:49:03,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 17:49:03,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2020-10-14 17:49:03,121 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 69 [2020-10-14 17:49:03,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:03,121 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2020-10-14 17:49:03,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 17:49:03,122 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2020-10-14 17:49:03,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 17:49:03,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:03,122 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:03,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 17:49:03,122 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:03,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:03,123 INFO L82 PathProgramCache]: Analyzing trace with hash 931020057, now seen corresponding path program 9 times [2020-10-14 17:49:03,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:03,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266101515] [2020-10-14 17:49:03,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:03,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:03,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:03,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:06,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:06,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 17:49:06,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:49:06,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2984 [2020-10-14 17:49:06,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:06,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:06,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:49:06,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 17:49:06,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:49:06,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:06,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:06,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:06,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:06,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:06,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:06,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:06,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:06,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:06,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:06,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:06,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:06,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:06,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 17:49:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:06,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:06,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:06,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:06,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:06,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:06,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:06,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:06,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:06,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 17:49:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:06,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:06,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:06,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:06,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:06,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:06,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:06,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:06,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:06,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 17:49:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:06,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:06,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:06,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:06,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:06,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:06,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:06,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:06,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:06,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:06,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:06,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:06,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 17:49:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:06,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:06,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:06,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:06,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:06,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:06,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:06,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:06,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:06,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:06,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:06,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:06,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 17:49:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:06,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:06,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:06,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:06,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:06,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:06,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:06,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:06,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:06,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:06,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:06,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:06,195 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 17:49:06,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266101515] [2020-10-14 17:49:06,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:06,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 17:49:06,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525570768] [2020-10-14 17:49:06,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 17:49:06,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:06,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 17:49:06,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:49:06,197 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand 9 states. [2020-10-14 17:49:06,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:06,316 INFO L93 Difference]: Finished difference Result 148 states and 154 transitions. [2020-10-14 17:49:06,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 17:49:06,317 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-10-14 17:49:06,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:06,318 INFO L225 Difference]: With dead ends: 148 [2020-10-14 17:49:06,318 INFO L226 Difference]: Without dead ends: 87 [2020-10-14 17:49:06,319 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 17:49:06,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-14 17:49:06,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-10-14 17:49:06,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 17:49:06,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2020-10-14 17:49:06,332 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 77 [2020-10-14 17:49:06,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:06,332 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2020-10-14 17:49:06,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 17:49:06,332 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2020-10-14 17:49:06,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 17:49:06,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:06,333 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:06,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 17:49:06,334 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:06,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:06,334 INFO L82 PathProgramCache]: Analyzing trace with hash -68357867, now seen corresponding path program 10 times [2020-10-14 17:49:06,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:06,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168929633] [2020-10-14 17:49:06,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:06,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:06,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:06,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:10,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:11,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:11,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 17:49:11,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:49:11,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:49:11,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:11,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:11,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:49:11,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:49:11,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 17:49:11,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:13,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:13,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:13,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:13,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:13,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:13,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:13,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:13,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:13,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:13,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:13,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:13,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:13,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 17:49:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:13,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:13,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:13,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:13,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:13,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:13,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:13,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:13,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:13,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:13,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:13,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:13,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:49:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:13,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:13,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:13,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:13,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:13,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:13,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:13,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:13,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:13,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 17:49:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:13,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:13,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:13,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:13,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:13,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:13,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:13,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:13,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:13,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:13,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:13,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:13,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 17:49:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:13,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:13,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:13,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:13,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:13,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:13,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:13,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:13,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:13,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 17:49:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:13,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:13,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:13,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:13,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:13,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:13,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:13,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:13,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:13,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:13,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:13,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:13,086 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 10 proven. 122 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 17:49:13,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168929633] [2020-10-14 17:49:13,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:13,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 17:49:13,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861280979] [2020-10-14 17:49:13,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 17:49:13,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:13,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 17:49:13,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:49:13,089 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand 27 states. [2020-10-14 17:49:14,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:14,532 INFO L93 Difference]: Finished difference Result 99 states and 102 transitions. [2020-10-14 17:49:14,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 17:49:14,537 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 81 [2020-10-14 17:49:14,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:14,539 INFO L225 Difference]: With dead ends: 99 [2020-10-14 17:49:14,539 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 17:49:14,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=160, Invalid=1400, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 17:49:14,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 17:49:14,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2020-10-14 17:49:14,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 17:49:14,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2020-10-14 17:49:14,552 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 81 [2020-10-14 17:49:14,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:14,552 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2020-10-14 17:49:14,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 17:49:14,552 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2020-10-14 17:49:14,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 17:49:14,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:14,553 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:14,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 17:49:14,554 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:14,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:14,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1641339828, now seen corresponding path program 11 times [2020-10-14 17:49:14,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:14,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421135433] [2020-10-14 17:49:14,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:14,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:14,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:14,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:18,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:18,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 17:49:18,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:49:18,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4425 [2020-10-14 17:49:18,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:18,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:18,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:49:18,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:18,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:49:18,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:19,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:19,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:19,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:19,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:19,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:19,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:19,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:19,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:19,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:19,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:19,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:19,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:19,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 17:49:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:19,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:19,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:19,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:19,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:19,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:19,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:19,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:19,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:19,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:49:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:19,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:19,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:19,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:19,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:19,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:19,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:19,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:19,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:19,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:19,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:19,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:19,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 17:49:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:19,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:19,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:19,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:19,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:19,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:19,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:19,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:19,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:19,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 17:49:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:19,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:19,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:19,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:19,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:19,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:19,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:19,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:19,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:19,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:19,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 17:49:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:19,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:19,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:19,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:19,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:19,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:19,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:19,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:19,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:19,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:19,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:19,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:19,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 17:49:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:19,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:19,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:19,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:19,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:19,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:19,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:19,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:19,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:19,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:19,074 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-14 17:49:19,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421135433] [2020-10-14 17:49:19,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:19,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 17:49:19,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610945785] [2020-10-14 17:49:19,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 17:49:19,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:19,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 17:49:19,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:49:19,076 INFO L87 Difference]: Start difference. First operand 93 states and 96 transitions. Second operand 10 states. [2020-10-14 17:49:19,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:19,190 INFO L93 Difference]: Finished difference Result 170 states and 176 transitions. [2020-10-14 17:49:19,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 17:49:19,190 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-10-14 17:49:19,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:19,191 INFO L225 Difference]: With dead ends: 170 [2020-10-14 17:49:19,191 INFO L226 Difference]: Without dead ends: 99 [2020-10-14 17:49:19,192 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 17:49:19,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-14 17:49:19,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2020-10-14 17:49:19,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 17:49:19,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2020-10-14 17:49:19,203 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 89 [2020-10-14 17:49:19,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:19,203 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2020-10-14 17:49:19,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 17:49:19,204 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2020-10-14 17:49:19,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 17:49:19,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:19,205 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:19,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 17:49:19,205 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:19,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:19,205 INFO L82 PathProgramCache]: Analyzing trace with hash -65229240, now seen corresponding path program 12 times [2020-10-14 17:49:19,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:19,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058417295] [2020-10-14 17:49:19,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:19,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:19,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:19,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:24,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:24,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 17:49:24,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:49:24,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 17:49:24,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:24,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:24,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:49:24,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 17:49:24,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 17:49:24,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:24,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:24,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:24,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:24,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:24,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:24,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:24,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:24,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:24,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:24,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 17:49:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:24,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:24,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:24,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:24,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:24,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 17:49:24,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:24,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:24,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:24,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:24,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:24,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:49:24,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 17:49:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:24,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:24,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:24,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:24,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:24,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:24,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:24,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:24,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:24,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:24,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:24,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:24,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 17:49:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:24,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:24,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:24,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:24,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:24,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:24,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:24,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:24,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:24,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:24,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:24,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:24,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 17:49:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:24,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:24,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:24,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:24,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:24,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:24,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:24,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:24,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:24,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:24,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:24,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:24,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 17:49:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:24,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:24,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:24,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:24,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:24,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:24,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:24,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:24,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:24,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:24,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:24,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 17:49:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:24,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:24,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:24,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:24,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:24,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:24,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:24,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:24,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:24,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:24,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:24,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:24,331 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 12 proven. 49 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-10-14 17:49:24,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058417295] [2020-10-14 17:49:24,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:24,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 17:49:24,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844457441] [2020-10-14 17:49:24,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 17:49:24,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:24,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 17:49:24,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:49:24,333 INFO L87 Difference]: Start difference. First operand 97 states and 100 transitions. Second operand 11 states. [2020-10-14 17:49:24,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:24,475 INFO L93 Difference]: Finished difference Result 176 states and 182 transitions. [2020-10-14 17:49:24,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 17:49:24,475 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-10-14 17:49:24,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:24,476 INFO L225 Difference]: With dead ends: 176 [2020-10-14 17:49:24,476 INFO L226 Difference]: Without dead ends: 103 [2020-10-14 17:49:24,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 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 17:49:24,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-14 17:49:24,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2020-10-14 17:49:24,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 17:49:24,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2020-10-14 17:49:24,500 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 93 [2020-10-14 17:49:24,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:24,500 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 104 transitions. [2020-10-14 17:49:24,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 17:49:24,501 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 104 transitions. [2020-10-14 17:49:24,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 17:49:24,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:24,501 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:24,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 17:49:24,502 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:24,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:24,502 INFO L82 PathProgramCache]: Analyzing trace with hash -293483964, now seen corresponding path program 13 times [2020-10-14 17:49:24,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:24,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258877274] [2020-10-14 17:49:24,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:24,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:24,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:24,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:29,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:29,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 17:49:29,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:49:29,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 17:49:29,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:29,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:49:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 17:49:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:49:29,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:29,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:29,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:29,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:29,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:29,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:29,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:29,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:29,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:29,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:29,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:29,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:29,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:29,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:49:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:29,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:29,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:29,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:29,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:29,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:29,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:29,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:29,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:29,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 17:49:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:29,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:29,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:29,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:29,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:29,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:29,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:29,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:29,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:29,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:29,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:29,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:29,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 17:49:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:29,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:29,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:29,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:29,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:29,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:29,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:29,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:29,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:29,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:29,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:29,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:29,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 17:49:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:29,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:29,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:29,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:29,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:29,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:29,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:29,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:29,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:29,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:29,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:29,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:29,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 17:49:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:29,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:29,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:29,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:29,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:29,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:29,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:29,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:29,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:29,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:29,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:29,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:29,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 17:49:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:29,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:29,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:29,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:29,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:29,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:29,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:29,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:29,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:29,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:29,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:29,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 12 proven. 64 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2020-10-14 17:49:29,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258877274] [2020-10-14 17:49:29,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:29,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 17:49:29,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60491307] [2020-10-14 17:49:29,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 17:49:29,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:29,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 17:49:29,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 17:49:29,645 INFO L87 Difference]: Start difference. First operand 101 states and 104 transitions. Second operand 12 states. [2020-10-14 17:49:29,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:29,804 INFO L93 Difference]: Finished difference Result 182 states and 188 transitions. [2020-10-14 17:49:29,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 17:49:29,805 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-10-14 17:49:29,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:29,806 INFO L225 Difference]: With dead ends: 182 [2020-10-14 17:49:29,806 INFO L226 Difference]: Without dead ends: 107 [2020-10-14 17:49:29,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 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 17:49:29,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-14 17:49:29,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2020-10-14 17:49:29,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 17:49:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 108 transitions. [2020-10-14 17:49:29,820 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 108 transitions. Word has length 97 [2020-10-14 17:49:29,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:29,820 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 108 transitions. [2020-10-14 17:49:29,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 17:49:29,820 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 108 transitions. [2020-10-14 17:49:29,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 17:49:29,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:29,821 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:29,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 17:49:29,821 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:29,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:29,822 INFO L82 PathProgramCache]: Analyzing trace with hash -255494080, now seen corresponding path program 14 times [2020-10-14 17:49:29,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:29,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433570526] [2020-10-14 17:49:29,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:29,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:29,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:29,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:34,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:34,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 17:49:34,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:49:34,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 17:49:34,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:34,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:49:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 17:49:34,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:34,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:34,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:34,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:34,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:34,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:34,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:34,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:34,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:34,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:34,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:34,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:34,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:34,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 17:49:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:34,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:34,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:34,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:34,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:34,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:34,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:34,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:34,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:34,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:34,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:34,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:34,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 17:49:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:34,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:34,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:34,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:34,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:34,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:34,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:34,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:34,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:34,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:34,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:34,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:34,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 17:49:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:34,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:34,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:34,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:34,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:34,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:34,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:34,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:34,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:34,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:34,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 17:49:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:34,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:34,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:34,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:34,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:34,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:34,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:34,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:34,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:34,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:34,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:34,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:34,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 17:49:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:34,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:34,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:34,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:34,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:34,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:34,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:34,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:34,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:34,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:34,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:34,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:34,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 17:49:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:34,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:34,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:34,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:34,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:34,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:34,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:34,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:34,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:34,955 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 12 proven. 81 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-14 17:49:34,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433570526] [2020-10-14 17:49:34,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:34,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 17:49:34,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082362095] [2020-10-14 17:49:34,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 17:49:34,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:34,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 17:49:34,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:49:34,957 INFO L87 Difference]: Start difference. First operand 105 states and 108 transitions. Second operand 13 states. [2020-10-14 17:49:35,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:35,117 INFO L93 Difference]: Finished difference Result 188 states and 194 transitions. [2020-10-14 17:49:35,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 17:49:35,118 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 101 [2020-10-14 17:49:35,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:35,119 INFO L225 Difference]: With dead ends: 188 [2020-10-14 17:49:35,119 INFO L226 Difference]: Without dead ends: 111 [2020-10-14 17:49:35,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 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 17:49:35,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-14 17:49:35,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-10-14 17:49:35,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 17:49:35,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 112 transitions. [2020-10-14 17:49:35,137 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 112 transitions. Word has length 101 [2020-10-14 17:49:35,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:35,137 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 112 transitions. [2020-10-14 17:49:35,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 17:49:35,137 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 112 transitions. [2020-10-14 17:49:35,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 17:49:35,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:35,138 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:35,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 17:49:35,139 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:35,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:35,139 INFO L82 PathProgramCache]: Analyzing trace with hash -2967492, now seen corresponding path program 15 times [2020-10-14 17:49:35,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:35,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912413425] [2020-10-14 17:49:35,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:35,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:35,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:35,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:40,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:40,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 17:49:40,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:49:40,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 17:49:40,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:40,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:40,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:49:40,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 17:49:40,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 17:49:40,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:40,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:40,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:40,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:40,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:40,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:40,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:40,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:40,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:40,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:40,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:40,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:40,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:40,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 17:49:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:40,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:40,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:40,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:40,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:40,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:40,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:40,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:40,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:40,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:40,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:40,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:40,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 17:49:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:40,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:40,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:40,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:40,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:40,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:40,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:40,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:40,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:40,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:40,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:40,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:49:40,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 17:49:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:40,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:40,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:40,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:40,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:40,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:40,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:40,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:40,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:40,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:40,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:40,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:40,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 17:49:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:40,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:40,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:40,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:40,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:40,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:40,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:40,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:40,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:40,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:40,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:40,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:40,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 17:49:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:40,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:40,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:40,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:40,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:40,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:40,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:40,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:40,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:40,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:40,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:40,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:49:40,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 17:49:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:40,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:40,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:40,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:40,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:40,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:40,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:40,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:40,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:40,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:40,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:40,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 12 proven. 100 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2020-10-14 17:49:40,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912413425] [2020-10-14 17:49:40,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:40,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 17:49:40,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802886400] [2020-10-14 17:49:40,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 17:49:40,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:40,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 17:49:40,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:49:40,316 INFO L87 Difference]: Start difference. First operand 109 states and 112 transitions. Second operand 14 states. [2020-10-14 17:49:40,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:40,493 INFO L93 Difference]: Finished difference Result 194 states and 200 transitions. [2020-10-14 17:49:40,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 17:49:40,494 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 105 [2020-10-14 17:49:40,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:40,495 INFO L225 Difference]: With dead ends: 194 [2020-10-14 17:49:40,495 INFO L226 Difference]: Without dead ends: 115 [2020-10-14 17:49:40,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:49:40,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-14 17:49:40,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-10-14 17:49:40,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 17:49:40,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2020-10-14 17:49:40,509 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 105 [2020-10-14 17:49:40,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:40,509 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2020-10-14 17:49:40,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 17:49:40,509 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2020-10-14 17:49:40,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 17:49:40,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:40,510 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:40,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 17:49:40,511 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:40,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:40,511 INFO L82 PathProgramCache]: Analyzing trace with hash 437553720, now seen corresponding path program 16 times [2020-10-14 17:49:40,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:40,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880570324] [2020-10-14 17:49:40,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:40,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:40,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:40,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:45,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:45,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 17:49:45,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:49:45,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 17:49:45,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:45,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:45,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:49:45,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:45,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:49:45,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:45,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:45,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:45,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:45,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:45,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:45,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:45,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:45,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:45,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:45,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 17:49:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:45,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:45,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:45,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:45,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:45,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:45,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:45,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:45,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:45,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:45,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:45,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:45,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 17:49:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:45,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:45,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:45,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:45,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:45,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:45,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:45,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:45,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:45,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:45,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:45,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:45,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 17:49:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:45,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:45,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:45,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:45,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:45,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:45,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:45,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:45,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:45,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:45,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:45,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:45,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 17:49:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:45,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:45,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:45,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:45,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:45,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:45,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:45,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:45,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:45,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:45,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:45,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:45,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 17:49:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:45,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:45,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:45,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:45,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:45,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:45,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:45,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:45,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:45,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:45,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:45,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:45,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 17:49:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:45,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:45,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:45,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:45,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:45,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:45,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:45,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:45,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:45,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:45,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:45,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:45,678 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 12 proven. 121 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-14 17:49:45,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880570324] [2020-10-14 17:49:45,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:45,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 17:49:45,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736018957] [2020-10-14 17:49:45,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 17:49:45,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:45,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 17:49:45,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:49:45,680 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand 15 states. [2020-10-14 17:49:45,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:45,862 INFO L93 Difference]: Finished difference Result 200 states and 206 transitions. [2020-10-14 17:49:45,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 17:49:45,863 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 109 [2020-10-14 17:49:45,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:45,864 INFO L225 Difference]: With dead ends: 200 [2020-10-14 17:49:45,864 INFO L226 Difference]: Without dead ends: 119 [2020-10-14 17:49:45,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 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 17:49:45,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-14 17:49:45,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2020-10-14 17:49:45,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 17:49:45,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 120 transitions. [2020-10-14 17:49:45,879 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 120 transitions. Word has length 109 [2020-10-14 17:49:45,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:45,880 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 120 transitions. [2020-10-14 17:49:45,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 17:49:45,880 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 120 transitions. [2020-10-14 17:49:45,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 17:49:45,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:45,881 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:45,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 17:49:45,882 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:45,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:45,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1082790348, now seen corresponding path program 17 times [2020-10-14 17:49:45,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:45,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661343123] [2020-10-14 17:49:45,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:45,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:45,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:45,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:50,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:50,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 17:49:50,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:49:50,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-14 17:49:50,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:50,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:50,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:49:50,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:50,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:49:50,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:51,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:51,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:51,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:51,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:51,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:51,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:51,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:51,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:51,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:51,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 17:49:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:51,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:51,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:51,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:51,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:51,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:51,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:51,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:51,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:51,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:51,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:51,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:51,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 17:49:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:51,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:51,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:51,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:51,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:51,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:51,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:51,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:51,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:51,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:51,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:51,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:51,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 17:49:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:51,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:51,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:51,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:51,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:51,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:51,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:51,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:51,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:51,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:51,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:51,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:51,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 17:49:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:51,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:51,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:51,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:51,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:51,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:51,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:51,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:51,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:51,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:51,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:51,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:49:51,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 17:49:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:51,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:51,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:51,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:51,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:51,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:51,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:51,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:51,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:51,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:51,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:51,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:51,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 17:49:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:51,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:51,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:51,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:51,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:51,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:51,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:51,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:51,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:51,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:51,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:51,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:49:51,119 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 12 proven. 144 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-10-14 17:49:51,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661343123] [2020-10-14 17:49:51,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:51,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 17:49:51,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423592501] [2020-10-14 17:49:51,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 17:49:51,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:51,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 17:49:51,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 17:49:51,121 INFO L87 Difference]: Start difference. First operand 117 states and 120 transitions. Second operand 16 states. [2020-10-14 17:49:51,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:51,331 INFO L93 Difference]: Finished difference Result 206 states and 212 transitions. [2020-10-14 17:49:51,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 17:49:51,331 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 113 [2020-10-14 17:49:51,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:51,333 INFO L225 Difference]: With dead ends: 206 [2020-10-14 17:49:51,333 INFO L226 Difference]: Without dead ends: 123 [2020-10-14 17:49:51,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 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 17:49:51,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-14 17:49:51,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2020-10-14 17:49:51,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 17:49:51,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 124 transitions. [2020-10-14 17:49:51,346 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 124 transitions. Word has length 113 [2020-10-14 17:49:51,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:51,346 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 124 transitions. [2020-10-14 17:49:51,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 17:49:51,346 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 124 transitions. [2020-10-14 17:49:51,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 17:49:51,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:51,347 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:51,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 17:49:51,348 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:51,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:51,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1902240816, now seen corresponding path program 18 times [2020-10-14 17:49:51,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:51,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125696054] [2020-10-14 17:49:51,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:51,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:51,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:51,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:56,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:56,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 17:49:56,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:49:56,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 17:49:56,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:56,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:56,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:49:56,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:56,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:49:56,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:56,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:56,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:56,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:56,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:56,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:56,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:56,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:56,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:56,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:56,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 17:49:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:56,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:56,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:56,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:56,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:56,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:56,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:56,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:56,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:56,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 17:49:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:56,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:56,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:56,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:56,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:56,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:56,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:56,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:56,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:56,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:56,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:56,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:56,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 17:49:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:56,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:56,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:56,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:56,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:56,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:56,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:56,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:56,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:56,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:56,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:56,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:56,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 17:49:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:56,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:56,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:56,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:56,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:56,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:56,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:56,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:56,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:56,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:56,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:56,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:56,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 17:49:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:56,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:56,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:56,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:56,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:56,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:56,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:56,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:56,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:56,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 17:49:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:56,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:56,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:56,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:56,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:56,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:56,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:56,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:56,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:56,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:56,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:56,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:56,570 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 12 proven. 169 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-14 17:49:56,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125696054] [2020-10-14 17:49:56,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:56,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 17:49:56,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845946258] [2020-10-14 17:49:56,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 17:49:56,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:56,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 17:49:56,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:49:56,572 INFO L87 Difference]: Start difference. First operand 121 states and 124 transitions. Second operand 17 states. [2020-10-14 17:49:56,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:56,782 INFO L93 Difference]: Finished difference Result 212 states and 218 transitions. [2020-10-14 17:49:56,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 17:49:56,783 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 117 [2020-10-14 17:49:56,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:56,784 INFO L225 Difference]: With dead ends: 212 [2020-10-14 17:49:56,784 INFO L226 Difference]: Without dead ends: 127 [2020-10-14 17:49:56,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 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 17:49:56,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-14 17:49:56,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-10-14 17:49:56,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-14 17:49:56,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 128 transitions. [2020-10-14 17:49:56,799 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 128 transitions. Word has length 117 [2020-10-14 17:49:56,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:56,801 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 128 transitions. [2020-10-14 17:49:56,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 17:49:56,801 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 128 transitions. [2020-10-14 17:49:56,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 17:49:56,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:56,803 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:56,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 17:49:56,803 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:56,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:56,804 INFO L82 PathProgramCache]: Analyzing trace with hash 851668012, now seen corresponding path program 19 times [2020-10-14 17:49:56,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:56,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206633851] [2020-10-14 17:49:56,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:56,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:56,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:56,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:01,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:01,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 17:50:01,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:50:01,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 17:50:01,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:01,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:01,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:50:01,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:50:01,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:50:01,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:01,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:01,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:01,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:01,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:01,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:01,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:01,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:01,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:01,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:01,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:01,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:01,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:01,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 17:50:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:01,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:01,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:01,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:01,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:01,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:01,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:01,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:01,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:01,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:01,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:01,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:01,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 17:50:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:01,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:01,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:01,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:01,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:01,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:01,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:01,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:01,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:01,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:01,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:01,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:01,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 17:50:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:01,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:01,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:01,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:01,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:01,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:01,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:01,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:01,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:01,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:01,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:01,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:01,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 17:50:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:01,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:01,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:01,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:01,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:01,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:01,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:01,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:01,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:01,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:01,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:01,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:01,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 17:50:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:01,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:01,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:01,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:01,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:01,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:01,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:01,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:01,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:01,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 17:50:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:01,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:01,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:01,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:01,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:01,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:01,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:01,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:01,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:01,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:01,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:01,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:02,005 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 12 proven. 196 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2020-10-14 17:50:02,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206633851] [2020-10-14 17:50:02,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:02,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 17:50:02,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725132686] [2020-10-14 17:50:02,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 17:50:02,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:02,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 17:50:02,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 17:50:02,007 INFO L87 Difference]: Start difference. First operand 125 states and 128 transitions. Second operand 18 states. [2020-10-14 17:50:02,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:02,228 INFO L93 Difference]: Finished difference Result 218 states and 224 transitions. [2020-10-14 17:50:02,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 17:50:02,230 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 121 [2020-10-14 17:50:02,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:02,232 INFO L225 Difference]: With dead ends: 218 [2020-10-14 17:50:02,232 INFO L226 Difference]: Without dead ends: 131 [2020-10-14 17:50:02,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 17:50:02,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-14 17:50:02,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2020-10-14 17:50:02,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 17:50:02,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2020-10-14 17:50:02,247 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 121 [2020-10-14 17:50:02,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:02,248 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2020-10-14 17:50:02,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 17:50:02,248 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2020-10-14 17:50:02,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 17:50:02,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:02,249 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:02,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 17:50:02,250 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:02,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:02,250 INFO L82 PathProgramCache]: Analyzing trace with hash 134579752, now seen corresponding path program 20 times [2020-10-14 17:50:02,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:02,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024219597] [2020-10-14 17:50:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:02,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:02,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:02,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:07,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:07,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 17:50:07,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:50:07,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5113 [2020-10-14 17:50:07,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:07,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:07,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:50:07,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:50:07,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 17:50:07,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:07,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:07,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:07,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:07,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:07,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:07,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:07,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:07,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:07,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:07,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 17:50:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:07,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:07,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:07,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:07,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:07,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:07,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:07,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:07,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:07,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 17:50:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:07,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:07,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:07,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:07,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:07,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:07,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:07,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:07,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:07,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:07,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:07,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:07,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 17:50:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:07,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:07,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:07,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:07,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:07,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:07,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:07,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:07,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:07,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:07,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:07,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 17:50:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:07,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:07,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:07,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:07,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:07,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:07,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:07,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:07,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:07,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:07,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:07,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:07,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 17:50:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:07,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:07,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:07,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:07,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:07,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:07,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:07,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:07,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:07,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:07,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:07,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:07,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 17:50:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:07,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:07,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:07,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:07,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:07,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:07,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:07,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:07,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:07,581 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 12 proven. 225 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2020-10-14 17:50:07,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024219597] [2020-10-14 17:50:07,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:07,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 17:50:07,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916874929] [2020-10-14 17:50:07,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 17:50:07,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:07,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 17:50:07,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:50:07,583 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand 19 states. [2020-10-14 17:50:07,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:07,754 INFO L93 Difference]: Finished difference Result 224 states and 230 transitions. [2020-10-14 17:50:07,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 17:50:07,754 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 125 [2020-10-14 17:50:07,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:07,755 INFO L225 Difference]: With dead ends: 224 [2020-10-14 17:50:07,756 INFO L226 Difference]: Without dead ends: 135 [2020-10-14 17:50:07,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 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 17:50:07,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-14 17:50:07,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2020-10-14 17:50:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-14 17:50:07,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 136 transitions. [2020-10-14 17:50:07,771 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 136 transitions. Word has length 125 [2020-10-14 17:50:07,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:07,771 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 136 transitions. [2020-10-14 17:50:07,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 17:50:07,771 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 136 transitions. [2020-10-14 17:50:07,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 17:50:07,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:07,773 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:07,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 17:50:07,773 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:07,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:07,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1997746724, now seen corresponding path program 21 times [2020-10-14 17:50:07,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:07,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216543255] [2020-10-14 17:50:07,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:07,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:07,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:07,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:12,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:12,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 17:50:12,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:50:12,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 17:50:12,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:12,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:12,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:50:12,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:50:12,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 17:50:12,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:13,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:13,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:13,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:13,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:13,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:13,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:13,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:13,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:13,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:13,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:13,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:13,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:50:13,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 17:50:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:13,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:13,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:13,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:13,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:13,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:13,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:13,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:13,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:50:13,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 17:50:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:13,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:13,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:13,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:13,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:13,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:13,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:13,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:13,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:13,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:13,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:13,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:50:13,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 17:50:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:13,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:13,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:13,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:13,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:13,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:13,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:13,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:13,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:13,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:13,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:13,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:50:13,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 17:50:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:13,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:13,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:13,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:13,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:13,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:13,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:13,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:13,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:13,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:13,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:13,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:13,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 17:50:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:13,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:13,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:13,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:13,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:13,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:13,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:13,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:13,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:13,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:13,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:13,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:13,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 17:50:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:13,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:13,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:13,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:13,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:13,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:13,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:13,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:13,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:13,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:50:13,113 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 12 proven. 256 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2020-10-14 17:50:13,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216543255] [2020-10-14 17:50:13,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:13,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 17:50:13,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175546256] [2020-10-14 17:50:13,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 17:50:13,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:13,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 17:50:13,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 17:50:13,117 INFO L87 Difference]: Start difference. First operand 133 states and 136 transitions. Second operand 20 states. [2020-10-14 17:50:13,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:13,444 INFO L93 Difference]: Finished difference Result 230 states and 236 transitions. [2020-10-14 17:50:13,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 17:50:13,445 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 129 [2020-10-14 17:50:13,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:13,447 INFO L225 Difference]: With dead ends: 230 [2020-10-14 17:50:13,447 INFO L226 Difference]: Without dead ends: 139 [2020-10-14 17:50:13,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 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 17:50:13,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-14 17:50:13,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2020-10-14 17:50:13,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-14 17:50:13,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 140 transitions. [2020-10-14 17:50:13,491 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 140 transitions. Word has length 129 [2020-10-14 17:50:13,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:13,492 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 140 transitions. [2020-10-14 17:50:13,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 17:50:13,492 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 140 transitions. [2020-10-14 17:50:13,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 17:50:13,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:13,495 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:13,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 17:50:13,500 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:13,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:13,500 INFO L82 PathProgramCache]: Analyzing trace with hash 123170848, now seen corresponding path program 22 times [2020-10-14 17:50:13,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:13,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821000246] [2020-10-14 17:50:13,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:13,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:13,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:13,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:18,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:18,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 17:50:18,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:50:18,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 17:50:18,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:18,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:50:18,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:50:18,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:50:18,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:18,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:18,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:18,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:18,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:18,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:18,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:18,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:18,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:18,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:18,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:18,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:18,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:50:18,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 17:50:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:18,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:18,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:18,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:18,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:18,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:18,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:18,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:18,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:18,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 17:50:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:18,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:18,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:18,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:18,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:18,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:18,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:18,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:18,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:18,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:50:18,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 17:50:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:18,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:18,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:18,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:18,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:18,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:18,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:18,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:18,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:18,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:18,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:50:18,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 17:50:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:18,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:18,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:18,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:18,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:18,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:18,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:18,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:18,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:18,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:18,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:18,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:50:18,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 17:50:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:18,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:18,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:18,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:18,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:18,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:18,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:18,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:18,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:50:18,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-14 17:50:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:18,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:18,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:18,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:18,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:18,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:18,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:18,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:18,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:18,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:18,835 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 12 proven. 289 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2020-10-14 17:50:18,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821000246] [2020-10-14 17:50:18,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:18,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 17:50:18,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416078749] [2020-10-14 17:50:18,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 17:50:18,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:18,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 17:50:18,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:50:18,839 INFO L87 Difference]: Start difference. First operand 137 states and 140 transitions. Second operand 21 states. [2020-10-14 17:50:19,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:19,078 INFO L93 Difference]: Finished difference Result 236 states and 242 transitions. [2020-10-14 17:50:19,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 17:50:19,079 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 133 [2020-10-14 17:50:19,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:19,080 INFO L225 Difference]: With dead ends: 236 [2020-10-14 17:50:19,081 INFO L226 Difference]: Without dead ends: 143 [2020-10-14 17:50:19,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 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 17:50:19,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-14 17:50:19,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2020-10-14 17:50:19,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-14 17:50:19,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 144 transitions. [2020-10-14 17:50:19,097 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 144 transitions. Word has length 133 [2020-10-14 17:50:19,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:19,098 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 144 transitions. [2020-10-14 17:50:19,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 17:50:19,098 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 144 transitions. [2020-10-14 17:50:19,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 17:50:19,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:19,100 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:19,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 17:50:19,100 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:19,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:19,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1044561892, now seen corresponding path program 23 times [2020-10-14 17:50:19,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:19,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136782131] [2020-10-14 17:50:19,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:19,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:19,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:19,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:24,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:24,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 17:50:24,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:50:24,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 17:50:24,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:24,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:24,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:50:24,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 17:50:24,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 17:50:24,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:24,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:24,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:24,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:24,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:24,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:24,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:24,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:24,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:24,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:24,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:24,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 17:50:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:24,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:24,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:24,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:24,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:24,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:24,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:24,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:24,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:24,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:24,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:24,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 17:50:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:24,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:24,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:24,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:24,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:24,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:24,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:24,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:24,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:24,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 17:50:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:24,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:24,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:24,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:24,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:24,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:24,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:24,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:24,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:24,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:24,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:24,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:24,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 17:50:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:24,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:24,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:24,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:24,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:24,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:24,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:24,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:24,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:24,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:24,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:24,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:24,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 17:50:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:24,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:24,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:24,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:24,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:24,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:24,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:24,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:24,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:24,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:24,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:24,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:24,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 17:50:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:24,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:24,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:24,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:24,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:24,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:24,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:24,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:24,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:24,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:24,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:24,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:24,393 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 12 proven. 324 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2020-10-14 17:50:24,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136782131] [2020-10-14 17:50:24,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:24,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 17:50:24,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644010622] [2020-10-14 17:50:24,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 17:50:24,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:24,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 17:50:24,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:50:24,395 INFO L87 Difference]: Start difference. First operand 141 states and 144 transitions. Second operand 22 states. [2020-10-14 17:50:24,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:24,608 INFO L93 Difference]: Finished difference Result 242 states and 248 transitions. [2020-10-14 17:50:24,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 17:50:24,608 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 137 [2020-10-14 17:50:24,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:24,610 INFO L225 Difference]: With dead ends: 242 [2020-10-14 17:50:24,610 INFO L226 Difference]: Without dead ends: 147 [2020-10-14 17:50:24,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:50:24,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-14 17:50:24,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2020-10-14 17:50:24,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-14 17:50:24,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 148 transitions. [2020-10-14 17:50:24,627 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 148 transitions. Word has length 137 [2020-10-14 17:50:24,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:24,627 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 148 transitions. [2020-10-14 17:50:24,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 17:50:24,627 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 148 transitions. [2020-10-14 17:50:24,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-14 17:50:24,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:24,629 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:24,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 17:50:24,629 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:24,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:24,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1330666984, now seen corresponding path program 24 times [2020-10-14 17:50:24,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:24,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735256147] [2020-10-14 17:50:24,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:24,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:24,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:24,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:29,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:29,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 17:50:29,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:50:29,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:50:29,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:29,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:50:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:50:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 17:50:29,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:29,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:29,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:29,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:29,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:29,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:29,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:29,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:29,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:29,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:29,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 17:50:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:29,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:29,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:29,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:29,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:29,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:29,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:29,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:29,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:29,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:29,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:29,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:29,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 17:50:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:29,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:29,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:29,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:29,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:29,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:29,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:29,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:29,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:29,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:29,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:29,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:29,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 17:50:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:29,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:29,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:29,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:29,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:29,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:29,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:29,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:29,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:29,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:29,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 17:50:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:29,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:29,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:29,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:29,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:29,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:29,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:29,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:29,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:29,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:29,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:29,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:29,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-14 17:50:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:29,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:29,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:29,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:29,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:29,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:29,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:29,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:29,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:29,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-14 17:50:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:29,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:29,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:29,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:29,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:29,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:29,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:29,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:29,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:29,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:29,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:29,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:29,923 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 12 proven. 361 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2020-10-14 17:50:29,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735256147] [2020-10-14 17:50:29,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:29,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 17:50:29,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225240991] [2020-10-14 17:50:29,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 17:50:29,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:29,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 17:50:29,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:50:29,925 INFO L87 Difference]: Start difference. First operand 145 states and 148 transitions. Second operand 23 states. [2020-10-14 17:50:30,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:30,138 INFO L93 Difference]: Finished difference Result 248 states and 254 transitions. [2020-10-14 17:50:30,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 17:50:30,139 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 141 [2020-10-14 17:50:30,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:30,140 INFO L225 Difference]: With dead ends: 248 [2020-10-14 17:50:30,140 INFO L226 Difference]: Without dead ends: 151 [2020-10-14 17:50:30,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:50:30,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-14 17:50:30,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-10-14 17:50:30,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-14 17:50:30,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 152 transitions. [2020-10-14 17:50:30,159 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 152 transitions. Word has length 141 [2020-10-14 17:50:30,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:30,160 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 152 transitions. [2020-10-14 17:50:30,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 17:50:30,160 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 152 transitions. [2020-10-14 17:50:30,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 17:50:30,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:30,161 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:30,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 17:50:30,161 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:30,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:30,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1612289556, now seen corresponding path program 25 times [2020-10-14 17:50:30,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:30,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369519069] [2020-10-14 17:50:30,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:30,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:30,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:30,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:35,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:35,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 17:50:35,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:50:35,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 17:50:35,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:35,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:50:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:50:35,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 17:50:35,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:35,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:35,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:35,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:35,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:35,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:35,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:35,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:35,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:35,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:35,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:35,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:35,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:35,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 17:50:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:35,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:35,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:35,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:35,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:35,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:35,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:35,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:35,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:35,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:35,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:35,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:35,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 17:50:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:35,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:35,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:35,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:35,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:35,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:35,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:35,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:35,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:35,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 17:50:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:35,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:35,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:35,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:35,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:35,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:35,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:35,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:35,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:35,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:35,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:35,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:35,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 17:50:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:35,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:35,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:35,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:35,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:35,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:35,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:35,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:35,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:35,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:35,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:35,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:35,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 17:50:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:35,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:35,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:35,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:35,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:35,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:35,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:35,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:35,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:35,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 17:50:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:35,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:35,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:35,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:35,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:35,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:35,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:35,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:35,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:35,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:35,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:35,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:35,496 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 12 proven. 400 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2020-10-14 17:50:35,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369519069] [2020-10-14 17:50:35,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:35,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 17:50:35,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990736258] [2020-10-14 17:50:35,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 17:50:35,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:35,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 17:50:35,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:50:35,498 INFO L87 Difference]: Start difference. First operand 149 states and 152 transitions. Second operand 24 states. [2020-10-14 17:50:35,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:35,783 INFO L93 Difference]: Finished difference Result 254 states and 260 transitions. [2020-10-14 17:50:35,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 17:50:35,783 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 145 [2020-10-14 17:50:35,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:35,785 INFO L225 Difference]: With dead ends: 254 [2020-10-14 17:50:35,785 INFO L226 Difference]: Without dead ends: 155 [2020-10-14 17:50:35,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:50:35,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-14 17:50:35,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2020-10-14 17:50:35,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-14 17:50:35,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 156 transitions. [2020-10-14 17:50:35,802 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 156 transitions. Word has length 145 [2020-10-14 17:50:35,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:35,803 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 156 transitions. [2020-10-14 17:50:35,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 17:50:35,803 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 156 transitions. [2020-10-14 17:50:35,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-14 17:50:35,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:35,804 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:35,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 17:50:35,804 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:35,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:35,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1566972944, now seen corresponding path program 26 times [2020-10-14 17:50:35,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:35,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805094597] [2020-10-14 17:50:35,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:35,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:35,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:35,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:40,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:40,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 17:50:40,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:50:40,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 17:50:40,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:40,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:40,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:50:40,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 17:50:40,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:50:40,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:41,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:41,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:41,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:41,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:41,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:41,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:41,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:41,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:41,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:41,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:41,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:41,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:41,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 17:50:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:41,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:41,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:41,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:41,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:41,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:41,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:41,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:41,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:41,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:41,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:41,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:41,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 17:50:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:41,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:41,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:41,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:41,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:41,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:41,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:41,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:41,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:41,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:41,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:41,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:41,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 17:50:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:41,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:41,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:41,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:41,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:41,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:41,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:41,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:41,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:41,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:41,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:41,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:50:41,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-14 17:50:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:41,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:41,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:41,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:41,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:41,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:41,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:41,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:41,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:41,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:41,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:41,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:41,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-14 17:50:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:41,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:41,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:41,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:41,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:41,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:41,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:41,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:41,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:41,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:41,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:50:41,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 17:50:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:41,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:41,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:41,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:41,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:41,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:41,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:41,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:41,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:41,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:41,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:41,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:50:41,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 12 proven. 441 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2020-10-14 17:50:41,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805094597] [2020-10-14 17:50:41,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:41,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 17:50:41,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334498409] [2020-10-14 17:50:41,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 17:50:41,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:41,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 17:50:41,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:50:41,210 INFO L87 Difference]: Start difference. First operand 153 states and 156 transitions. Second operand 25 states. [2020-10-14 17:50:41,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:41,528 INFO L93 Difference]: Finished difference Result 260 states and 266 transitions. [2020-10-14 17:50:41,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 17:50:41,529 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 149 [2020-10-14 17:50:41,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:41,533 INFO L225 Difference]: With dead ends: 260 [2020-10-14 17:50:41,533 INFO L226 Difference]: Without dead ends: 159 [2020-10-14 17:50:41,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:50:41,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-14 17:50:41,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2020-10-14 17:50:41,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-14 17:50:41,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 160 transitions. [2020-10-14 17:50:41,553 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 160 transitions. Word has length 149 [2020-10-14 17:50:41,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:41,554 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 160 transitions. [2020-10-14 17:50:41,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 17:50:41,554 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 160 transitions. [2020-10-14 17:50:41,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 17:50:41,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:41,555 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:41,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 17:50:41,555 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:41,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:41,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1216334836, now seen corresponding path program 27 times [2020-10-14 17:50:41,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:41,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213199919] [2020-10-14 17:50:41,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:41,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:41,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:41,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:46,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:46,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-14 17:50:46,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:50:46,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 17:50:46,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:46,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:50:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 17:50:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 17:50:46,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:46,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:46,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:46,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:46,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:46,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:46,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:46,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:46,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:46,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:46,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:46,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:46,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:46,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 17:50:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:46,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:46,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:46,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:46,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:46,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:46,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:46,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:46,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:46,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:46,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:46,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 17:50:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:46,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:46,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:46,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:46,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:46,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:46,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:46,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:46,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:46,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:46,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:46,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:46,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 17:50:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:46,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:46,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:46,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:46,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:46,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:46,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:46,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:46,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:46,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:46,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:46,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:46,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 17:50:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:46,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:46,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:46,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:46,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:46,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:46,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:46,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:46,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:46,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:46,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:46,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:46,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 17:50:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:46,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:46,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:46,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:46,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:46,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:46,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:46,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:46,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:46,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-14 17:50:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:46,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:46,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:46,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:46,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:46,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:46,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:46,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:46,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:46,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:46,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:46,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:46,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 12 proven. 484 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2020-10-14 17:50:46,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213199919] [2020-10-14 17:50:46,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:46,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 17:50:46,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316795763] [2020-10-14 17:50:46,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 17:50:46,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:46,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 17:50:46,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 17:50:46,952 INFO L87 Difference]: Start difference. First operand 157 states and 160 transitions. Second operand 26 states. [2020-10-14 17:50:47,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:47,227 INFO L93 Difference]: Finished difference Result 266 states and 272 transitions. [2020-10-14 17:50:47,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 17:50:47,228 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 153 [2020-10-14 17:50:47,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:47,229 INFO L225 Difference]: With dead ends: 266 [2020-10-14 17:50:47,229 INFO L226 Difference]: Without dead ends: 163 [2020-10-14 17:50:47,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 17:50:47,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-14 17:50:47,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 161. [2020-10-14 17:50:47,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-14 17:50:47,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 164 transitions. [2020-10-14 17:50:47,250 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 164 transitions. Word has length 153 [2020-10-14 17:50:47,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:47,250 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 164 transitions. [2020-10-14 17:50:47,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 17:50:47,251 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 164 transitions. [2020-10-14 17:50:47,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-14 17:50:47,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:47,252 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:47,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 17:50:47,252 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:47,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:47,253 INFO L82 PathProgramCache]: Analyzing trace with hash 2127748616, now seen corresponding path program 28 times [2020-10-14 17:50:47,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:47,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614231120] [2020-10-14 17:50:47,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:47,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:47,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:47,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:52,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:52,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 17:50:52,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:50:52,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 17:50:52,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:52,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:52,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:50:52,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:50:52,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 17:50:52,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:52,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:52,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:52,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:52,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:52,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:52,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:52,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:52,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:52,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:52,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 17:50:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:52,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:52,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:52,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:52,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:52,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:52,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:52,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:52,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:52,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:52,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:52,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:52,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 17:50:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:52,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:52,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:52,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:52,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:52,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:52,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:52,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:52,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:52,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-14 17:50:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:52,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:52,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:52,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:52,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:52,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:52,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:52,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:52,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:52,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:52,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:52,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:52,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-14 17:50:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:52,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:52,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:52,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:52,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:52,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:52,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:52,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:52,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:52,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:52,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:52,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:52,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 17:50:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:52,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:52,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:52,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:52,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:52,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:52,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:52,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:52,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:52,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-14 17:50:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:52,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:52,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:52,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:52,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:52,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:50:52,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:52,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:52,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:52,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:50:52,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1202 backedges. 12 proven. 529 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2020-10-14 17:50:52,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614231120] [2020-10-14 17:50:52,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:52,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 17:50:52,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585013683] [2020-10-14 17:50:52,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 17:50:52,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:52,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 17:50:52,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:50:52,740 INFO L87 Difference]: Start difference. First operand 161 states and 164 transitions. Second operand 27 states. [2020-10-14 17:50:53,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:53,060 INFO L93 Difference]: Finished difference Result 272 states and 278 transitions. [2020-10-14 17:50:53,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 17:50:53,060 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 157 [2020-10-14 17:50:53,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:53,062 INFO L225 Difference]: With dead ends: 272 [2020-10-14 17:50:53,062 INFO L226 Difference]: Without dead ends: 167 [2020-10-14 17:50:53,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:50:53,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-14 17:50:53,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 165. [2020-10-14 17:50:53,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 17:50:53,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 168 transitions. [2020-10-14 17:50:53,081 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 168 transitions. Word has length 157 [2020-10-14 17:50:53,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:53,082 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 168 transitions. [2020-10-14 17:50:53,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 17:50:53,082 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 168 transitions. [2020-10-14 17:50:53,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-14 17:50:53,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:53,083 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:53,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 17:50:53,083 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:53,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:53,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1162418692, now seen corresponding path program 29 times [2020-10-14 17:50:53,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:53,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204590589] [2020-10-14 17:50:53,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:53,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:53,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:53,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:58,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:58,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 17:50:58,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:50:58,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 17:50:58,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:58,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:58,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:50:58,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:50:58,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 17:50:58,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:58,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:58,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:58,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:58,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:58,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:58,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:58,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:58,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:58,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:58,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:58,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:58,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:58,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 17:50:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:58,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:58,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:58,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:58,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:58,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:58,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:58,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:58,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:58,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:58,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:58,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:58,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 17:50:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:58,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:58,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:58,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:58,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:58,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:58,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:58,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:58,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:58,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:58,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:58,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:58,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 17:50:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:58,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:58,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:58,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:58,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:58,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:58,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:58,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:58,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 17:50:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:58,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:58,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:58,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:58,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:58,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:58,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:58,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:58,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:58,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:58,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:58,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:58,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-14 17:50:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:58,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:58,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:58,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:58,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:58,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:58,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:58,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:58,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:58,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-14 17:50:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:58,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:58,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:58,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:58,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:58,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:58,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:58,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:58,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:58,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:58,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:58,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:58,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 12 proven. 576 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2020-10-14 17:50:58,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204590589] [2020-10-14 17:50:58,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:58,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 17:50:58,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670295037] [2020-10-14 17:50:58,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 17:50:58,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:58,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 17:50:58,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-14 17:50:58,556 INFO L87 Difference]: Start difference. First operand 165 states and 168 transitions. Second operand 28 states. [2020-10-14 17:50:58,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:58,882 INFO L93 Difference]: Finished difference Result 278 states and 284 transitions. [2020-10-14 17:50:58,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 17:50:58,886 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 161 [2020-10-14 17:50:58,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:58,887 INFO L225 Difference]: With dead ends: 278 [2020-10-14 17:50:58,887 INFO L226 Difference]: Without dead ends: 171 [2020-10-14 17:50:58,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-14 17:50:58,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-14 17:50:58,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2020-10-14 17:50:58,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-14 17:50:58,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 172 transitions. [2020-10-14 17:50:58,900 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 172 transitions. Word has length 161 [2020-10-14 17:50:58,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:58,901 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 172 transitions. [2020-10-14 17:50:58,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 17:50:58,901 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 172 transitions. [2020-10-14 17:50:58,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 17:50:58,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:58,902 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:58,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 17:50:58,902 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:58,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:58,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1639061504, now seen corresponding path program 30 times [2020-10-14 17:50:58,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:58,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701928390] [2020-10-14 17:50:58,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:58,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:58,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:58,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:03,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:03,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 17:51:03,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:51:03,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 17:51:03,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:03,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:03,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:51:03,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:51:03,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 17:51:03,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:04,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:51:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:04,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:04,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:04,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:51:04,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:04,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:04,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:04,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:04,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:04,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 17:51:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:04,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:04,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:04,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:04,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:04,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:04,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:04,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:04,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:04,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:04,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-14 17:51:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:04,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:04,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:04,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:04,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:04,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:04,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:04,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:04,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:04,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-14 17:51:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:04,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:04,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:04,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:04,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:04,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:04,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:04,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:04,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:04,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 17:51:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:04,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:04,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:04,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:04,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:04,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:04,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:04,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:04,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:04,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:04,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:04,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:04,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-14 17:51:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:04,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:04,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:04,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:04,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:04,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:04,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:04,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:04,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:04,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:04,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:04,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:04,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 17:51:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:04,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:04,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:04,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:04,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:04,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:04,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:04,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:04,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:04,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:04,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:04,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:04,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1394 backedges. 12 proven. 625 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2020-10-14 17:51:04,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701928390] [2020-10-14 17:51:04,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:51:04,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 17:51:04,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597410671] [2020-10-14 17:51:04,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 17:51:04,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:51:04,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 17:51:04,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:51:04,374 INFO L87 Difference]: Start difference. First operand 169 states and 172 transitions. Second operand 29 states. [2020-10-14 17:51:04,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:51:04,735 INFO L93 Difference]: Finished difference Result 284 states and 290 transitions. [2020-10-14 17:51:04,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 17:51:04,735 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 165 [2020-10-14 17:51:04,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:51:04,737 INFO L225 Difference]: With dead ends: 284 [2020-10-14 17:51:04,737 INFO L226 Difference]: Without dead ends: 175 [2020-10-14 17:51:04,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:51:04,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-14 17:51:04,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2020-10-14 17:51:04,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-14 17:51:04,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 176 transitions. [2020-10-14 17:51:04,755 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 176 transitions. Word has length 165 [2020-10-14 17:51:04,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:51:04,755 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 176 transitions. [2020-10-14 17:51:04,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 17:51:04,755 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 176 transitions. [2020-10-14 17:51:04,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 17:51:04,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:51:04,757 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:51:04,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 17:51:04,757 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:51:04,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:51:04,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1630779396, now seen corresponding path program 31 times [2020-10-14 17:51:04,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:51:04,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872854701] [2020-10-14 17:51:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:51:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:04,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:04,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:04,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:09,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:09,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-14 17:51:09,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:51:09,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 17:51:09,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:09,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:09,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:51:09,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:51:09,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:51:09,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:10,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:51:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:10,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:10,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:10,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:51:10,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:10,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:51:10,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:10,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:10,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:10,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:10,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:10,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:10,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 17:51:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:10,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:10,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:10,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:10,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:10,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:10,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:10,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:10,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:10,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:10,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:10,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:10,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 17:51:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:10,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:10,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:10,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:10,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:10,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:10,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:10,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:10,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:10,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:10,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:10,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:10,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 17:51:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:10,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:10,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:10,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:10,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:10,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:10,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:10,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:10,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:10,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:10,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:10,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:10,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-14 17:51:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:10,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:10,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:10,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:10,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:10,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:10,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:10,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:10,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:10,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-14 17:51:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:10,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:10,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:10,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:10,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:10,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:10,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:10,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:10,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:10,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 17:51:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:10,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:10,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:10,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:10,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:10,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:10,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:10,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:10,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:10,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 12 proven. 676 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2020-10-14 17:51:10,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872854701] [2020-10-14 17:51:10,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:51:10,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 17:51:10,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070242370] [2020-10-14 17:51:10,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 17:51:10,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:51:10,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 17:51:10,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:51:10,237 INFO L87 Difference]: Start difference. First operand 173 states and 176 transitions. Second operand 30 states. [2020-10-14 17:51:10,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:51:10,607 INFO L93 Difference]: Finished difference Result 290 states and 296 transitions. [2020-10-14 17:51:10,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 17:51:10,607 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 169 [2020-10-14 17:51:10,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:51:10,608 INFO L225 Difference]: With dead ends: 290 [2020-10-14 17:51:10,608 INFO L226 Difference]: Without dead ends: 179 [2020-10-14 17:51:10,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:51:10,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-14 17:51:10,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-10-14 17:51:10,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-14 17:51:10,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 180 transitions. [2020-10-14 17:51:10,630 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 180 transitions. Word has length 169 [2020-10-14 17:51:10,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:51:10,631 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 180 transitions. [2020-10-14 17:51:10,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 17:51:10,631 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 180 transitions. [2020-10-14 17:51:10,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 17:51:10,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:51:10,632 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:51:10,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 17:51:10,632 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:51:10,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:51:10,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1563376120, now seen corresponding path program 32 times [2020-10-14 17:51:10,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:51:10,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113742322] [2020-10-14 17:51:10,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:51:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:10,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:10,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:10,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:15,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:15,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 17:51:15,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:51:15,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-14 17:51:15,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:15,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:15,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:51:15,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 17:51:15,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:51:15,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:16,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:51:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:16,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:16,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:16,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:51:16,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:16,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:16,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:16,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:16,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:16,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:16,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:16,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:16,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-14 17:51:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:16,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:16,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:16,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:16,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:16,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:16,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:16,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:16,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:16,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:16,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:16,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:16,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-14 17:51:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:16,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:16,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:16,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:16,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:16,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:16,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:16,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:16,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:16,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:16,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:16,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:16,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 17:51:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:16,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:16,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:16,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:16,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:16,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:16,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:16,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:16,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:16,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:16,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-14 17:51:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:16,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:16,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:16,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:16,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:16,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:16,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:16,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:16,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:16,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:16,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:16,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:16,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 17:51:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:16,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:16,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:16,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:16,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:16,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:16,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:16,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:16,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:16,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:16,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:16,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-14 17:51:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:16,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:16,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:16,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:16,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:16,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:16,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:16,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:16,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:16,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:16,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:16,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:16,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 12 proven. 729 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2020-10-14 17:51:16,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113742322] [2020-10-14 17:51:16,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:51:16,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 17:51:16,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881738447] [2020-10-14 17:51:16,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 17:51:16,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:51:16,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 17:51:16,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:51:16,212 INFO L87 Difference]: Start difference. First operand 177 states and 180 transitions. Second operand 31 states. [2020-10-14 17:51:16,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:51:16,526 INFO L93 Difference]: Finished difference Result 296 states and 302 transitions. [2020-10-14 17:51:16,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 17:51:16,526 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 173 [2020-10-14 17:51:16,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:51:16,528 INFO L225 Difference]: With dead ends: 296 [2020-10-14 17:51:16,528 INFO L226 Difference]: Without dead ends: 183 [2020-10-14 17:51:16,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:51:16,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-14 17:51:16,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2020-10-14 17:51:16,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-14 17:51:16,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 184 transitions. [2020-10-14 17:51:16,549 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 184 transitions. Word has length 173 [2020-10-14 17:51:16,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:51:16,549 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 184 transitions. [2020-10-14 17:51:16,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 17:51:16,549 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 184 transitions. [2020-10-14 17:51:16,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 17:51:16,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:51:16,551 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:51:16,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 17:51:16,551 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:51:16,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:51:16,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1902231028, now seen corresponding path program 33 times [2020-10-14 17:51:16,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:51:16,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705920070] [2020-10-14 17:51:16,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:51:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:16,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:16,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:16,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:21,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:21,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 17:51:21,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:51:21,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 17:51:21,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:21,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:21,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:51:21,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:51:21,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 17:51:21,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:22,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:51:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:22,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:22,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:22,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:51:22,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:22,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:22,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:22,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:22,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:22,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:22,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:22,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:22,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 17:51:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:22,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:22,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:22,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:22,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:22,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:22,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:22,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:22,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:22,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 17:51:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:22,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:22,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:22,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:22,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:22,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:22,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:22,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:22,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:22,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:22,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:22,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:22,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-14 17:51:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:22,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:22,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:22,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:22,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:22,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:22,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:22,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:22,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:22,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:22,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:22,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:22,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-14 17:51:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:22,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:22,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:22,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:22,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:22,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:22,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:22,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:22,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:22,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:22,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:22,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:22,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 17:51:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:22,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:22,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:22,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:22,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:22,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:22,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:22,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:22,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:22,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:22,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:22,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:22,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-14 17:51:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:22,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:22,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:22,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:22,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:22,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:22,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:22,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:22,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:22,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:22,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:22,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:22,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 12 proven. 784 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2020-10-14 17:51:22,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705920070] [2020-10-14 17:51:22,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:51:22,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 17:51:22,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422398164] [2020-10-14 17:51:22,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 17:51:22,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:51:22,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 17:51:22,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-14 17:51:22,122 INFO L87 Difference]: Start difference. First operand 181 states and 184 transitions. Second operand 32 states. [2020-10-14 17:51:22,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:51:22,555 INFO L93 Difference]: Finished difference Result 302 states and 308 transitions. [2020-10-14 17:51:22,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 17:51:22,556 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 177 [2020-10-14 17:51:22,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:51:22,558 INFO L225 Difference]: With dead ends: 302 [2020-10-14 17:51:22,558 INFO L226 Difference]: Without dead ends: 187 [2020-10-14 17:51:22,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-14 17:51:22,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-14 17:51:22,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2020-10-14 17:51:22,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-14 17:51:22,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 188 transitions. [2020-10-14 17:51:22,578 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 188 transitions. Word has length 177 [2020-10-14 17:51:22,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:51:22,579 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 188 transitions. [2020-10-14 17:51:22,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 17:51:22,579 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 188 transitions. [2020-10-14 17:51:22,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-14 17:51:22,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:51:22,580 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:51:22,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 17:51:22,580 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:51:22,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:51:22,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1959711728, now seen corresponding path program 34 times [2020-10-14 17:51:22,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:51:22,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327172910] [2020-10-14 17:51:22,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:51:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:22,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:22,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:22,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:27,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:27,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 17:51:27,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:51:27,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-14 17:51:27,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:27,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:51:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:51:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 17:51:27,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:28,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:51:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:28,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:28,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:28,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:51:28,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:28,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:28,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:28,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:28,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:28,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:28,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:28,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:28,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-14 17:51:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:28,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:28,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:28,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:28,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:28,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:28,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:28,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:28,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:28,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:28,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:28,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:51:28,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 17:51:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:28,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:28,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:28,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:28,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:28,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:28,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:28,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:28,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:28,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:28,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-14 17:51:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:28,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:28,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:28,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:28,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:28,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:28,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:28,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:28,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:28,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 17:51:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:28,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:28,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:28,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:28,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:28,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:28,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:28,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:28,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:28,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:28,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:28,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:28,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-14 17:51:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:28,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:28,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:28,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:28,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:28,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:28,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:28,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:28,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:28,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:28,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:28,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:28,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 17:51:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:28,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:28,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:28,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:28,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:28,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:28,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:28,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:28,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:28,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:28,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:28,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1826 backedges. 12 proven. 841 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2020-10-14 17:51:28,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327172910] [2020-10-14 17:51:28,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:51:28,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 17:51:28,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028377726] [2020-10-14 17:51:28,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 17:51:28,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:51:28,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 17:51:28,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 17:51:28,222 INFO L87 Difference]: Start difference. First operand 185 states and 188 transitions. Second operand 33 states. [2020-10-14 17:51:28,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:51:28,644 INFO L93 Difference]: Finished difference Result 308 states and 314 transitions. [2020-10-14 17:51:28,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 17:51:28,645 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 181 [2020-10-14 17:51:28,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:51:28,646 INFO L225 Difference]: With dead ends: 308 [2020-10-14 17:51:28,646 INFO L226 Difference]: Without dead ends: 191 [2020-10-14 17:51:28,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 17:51:28,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-14 17:51:28,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 189. [2020-10-14 17:51:28,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-14 17:51:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 192 transitions. [2020-10-14 17:51:28,668 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 192 transitions. Word has length 181 [2020-10-14 17:51:28,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:51:28,669 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 192 transitions. [2020-10-14 17:51:28,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 17:51:28,669 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 192 transitions. [2020-10-14 17:51:28,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 17:51:28,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:51:28,670 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:51:28,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 17:51:28,671 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:51:28,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:51:28,671 INFO L82 PathProgramCache]: Analyzing trace with hash -2107540500, now seen corresponding path program 35 times [2020-10-14 17:51:28,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:51:28,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838152257] [2020-10-14 17:51:28,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:51:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:28,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:28,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:28,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:33,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:33,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-14 17:51:33,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:51:33,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 17:51:33,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:33,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:33,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:51:33,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:51:33,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 17:51:33,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:34,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:51:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:34,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:34,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:34,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:51:34,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:34,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:34,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:34,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:34,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:34,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 17:51:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:34,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:34,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:34,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:34,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:34,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:34,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:34,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:34,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:34,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-14 17:51:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:34,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:34,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:34,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:34,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:34,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:34,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:34,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:34,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:34,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:34,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:34,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:34,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-14 17:51:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:34,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:34,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:34,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:34,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:34,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:34,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:34,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:34,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:34,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:34,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:34,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:34,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 17:51:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:34,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:34,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:34,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:34,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:34,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:34,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:34,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:34,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:34,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-14 17:51:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:34,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:34,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:34,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:34,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:34,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:34,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:34,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:34,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:34,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:34,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:34,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:34,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-14 17:51:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:34,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:34,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:34,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:34,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:34,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:34,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:34,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:34,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:34,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:34,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:34,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:34,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1944 backedges. 12 proven. 900 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2020-10-14 17:51:34,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838152257] [2020-10-14 17:51:34,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:51:34,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 17:51:34,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289197008] [2020-10-14 17:51:34,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 17:51:34,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:51:34,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 17:51:34,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 17:51:34,285 INFO L87 Difference]: Start difference. First operand 189 states and 192 transitions. Second operand 34 states. [2020-10-14 17:51:34,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:51:34,627 INFO L93 Difference]: Finished difference Result 314 states and 320 transitions. [2020-10-14 17:51:34,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 17:51:34,627 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 185 [2020-10-14 17:51:34,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:51:34,629 INFO L225 Difference]: With dead ends: 314 [2020-10-14 17:51:34,629 INFO L226 Difference]: Without dead ends: 195 [2020-10-14 17:51:34,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 17:51:34,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-14 17:51:34,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 193. [2020-10-14 17:51:34,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-14 17:51:34,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 196 transitions. [2020-10-14 17:51:34,646 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 196 transitions. Word has length 185 [2020-10-14 17:51:34,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:51:34,647 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 196 transitions. [2020-10-14 17:51:34,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 17:51:34,647 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 196 transitions. [2020-10-14 17:51:34,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 17:51:34,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:51:34,648 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:51:34,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 17:51:34,649 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:51:34,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:51:34,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1232816664, now seen corresponding path program 36 times [2020-10-14 17:51:34,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:51:34,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431531581] [2020-10-14 17:51:34,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:51:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:34,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:34,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:34,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:39,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:39,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-14 17:51:39,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:51:39,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5254 [2020-10-14 17:51:39,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:39,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:39,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 17:51:39,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-14 17:51:39,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 17:51:39,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:40,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:51:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:40,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:40,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:40,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:51:40,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:40,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:40,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:40,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:40,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:40,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:40,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 17:51:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:40,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:40,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:40,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:40,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:40,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:40,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:40,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:40,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:40,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:40,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:40,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:40,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-14 17:51:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:40,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:40,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:40,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:40,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:40,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:40,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:40,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:40,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:40,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:40,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:40,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:40,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 17:51:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:40,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:40,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:40,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:40,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:40,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:40,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:40,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:40,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:40,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:40,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:40,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:40,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-14 17:51:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:40,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:40,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:40,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:40,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:40,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:40,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:40,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:40,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:40,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:40,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:40,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:40,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 17:51:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:40,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:40,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:40,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:40,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:40,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:40,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:40,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:40,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:40,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-14 17:51:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:40,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:40,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:40,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:40,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:40,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:40,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:40,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:40,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:40,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:40,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:40,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:40,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2066 backedges. 12 proven. 961 refuted. 0 times theorem prover too weak. 1093 trivial. 0 not checked. [2020-10-14 17:51:40,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431531581] [2020-10-14 17:51:40,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:51:40,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 17:51:40,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543838598] [2020-10-14 17:51:40,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 17:51:40,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:51:40,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 17:51:40,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 17:51:40,570 INFO L87 Difference]: Start difference. First operand 193 states and 196 transitions. Second operand 35 states. [2020-10-14 17:51:41,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:51:41,004 INFO L93 Difference]: Finished difference Result 320 states and 326 transitions. [2020-10-14 17:51:41,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 17:51:41,005 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 189 [2020-10-14 17:51:41,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:51:41,007 INFO L225 Difference]: With dead ends: 320 [2020-10-14 17:51:41,007 INFO L226 Difference]: Without dead ends: 199 [2020-10-14 17:51:41,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 17:51:41,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-14 17:51:41,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 197. [2020-10-14 17:51:41,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-14 17:51:41,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 200 transitions. [2020-10-14 17:51:41,029 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 200 transitions. Word has length 189 [2020-10-14 17:51:41,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:51:41,029 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 200 transitions. [2020-10-14 17:51:41,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 17:51:41,029 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 200 transitions. [2020-10-14 17:51:41,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 17:51:41,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:51:41,030 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:51:41,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 17:51:41,030 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:51:41,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:51:41,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1356627484, now seen corresponding path program 37 times [2020-10-14 17:51:41,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:51:41,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68812519] [2020-10-14 17:51:41,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:51:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:41,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:41,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:41,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:46,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:46,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-14 17:51:46,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:51:46,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5529 [2020-10-14 17:51:46,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:46,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:46,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 17:51:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:51:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:51:46,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:47,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:51:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:47,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:47,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:47,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:51:47,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:47,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:47,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:47,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:47,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:47,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:47,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:47,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:47,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-14 17:51:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:47,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:47,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:47,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:47,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:47,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:47,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:47,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:47,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:47,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-14 17:51:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:47,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:47,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:47,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:47,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:47,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:47,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:47,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:47,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:47,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:47,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:47,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 17:51:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:47,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:47,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:47,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:47,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:47,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:47,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:47,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:47,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:47,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:47,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:47,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:47,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-14 17:51:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:47,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:47,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:47,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:47,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:47,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:47,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:47,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:47,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:47,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:47,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:47,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:47,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-14 17:51:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:47,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:47,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:47,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:47,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:47,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:47,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:47,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:47,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:47,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 17:51:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:47,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:47,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:47,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:47,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:47,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:47,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:47,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:47,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:47,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:47,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2192 backedges. 12 proven. 1024 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2020-10-14 17:51:47,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68812519] [2020-10-14 17:51:47,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:51:47,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 17:51:47,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526313274] [2020-10-14 17:51:47,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 17:51:47,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:51:47,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 17:51:47,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 17:51:47,240 INFO L87 Difference]: Start difference. First operand 197 states and 200 transitions. Second operand 36 states. [2020-10-14 17:51:47,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:51:47,682 INFO L93 Difference]: Finished difference Result 326 states and 332 transitions. [2020-10-14 17:51:47,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 17:51:47,682 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 193 [2020-10-14 17:51:47,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:51:47,684 INFO L225 Difference]: With dead ends: 326 [2020-10-14 17:51:47,684 INFO L226 Difference]: Without dead ends: 203 [2020-10-14 17:51:47,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 17:51:47,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-14 17:51:47,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 201. [2020-10-14 17:51:47,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-14 17:51:47,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 204 transitions. [2020-10-14 17:51:47,701 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 204 transitions. Word has length 193 [2020-10-14 17:51:47,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:51:47,701 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 204 transitions. [2020-10-14 17:51:47,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 17:51:47,702 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 204 transitions. [2020-10-14 17:51:47,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-14 17:51:47,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:51:47,703 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:51:47,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 17:51:47,703 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:51:47,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:51:47,704 INFO L82 PathProgramCache]: Analyzing trace with hash 195616736, now seen corresponding path program 38 times [2020-10-14 17:51:47,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:51:47,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821382805] [2020-10-14 17:51:47,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:51:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:47,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:47,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:47,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:52,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:52,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 17:51:52,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:51:52,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5212 [2020-10-14 17:51:52,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:52,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:52,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 17:51:52,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 17:51:52,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 17:51:52,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:53,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:51:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:53,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:53,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:53,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:51:53,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:53,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:53,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:53,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:53,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:53,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:53,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:53,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:53,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-14 17:51:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:53,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:53,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:53,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:53,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:53,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:53,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:53,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:53,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:53,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:53,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:53,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:53,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 17:51:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:53,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:53,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:53,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:53,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:53,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:53,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:53,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:53,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:53,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:53,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:53,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:53,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-14 17:51:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:53,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:53,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:53,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:53,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:53,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:53,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:53,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:53,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:53,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:53,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:53,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:53,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 17:51:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:53,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:53,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:53,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:53,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:53,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:53,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:53,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:53,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:53,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-14 17:51:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:53,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:53,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:53,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:53,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:53,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:53,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:53,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:53,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:53,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:53,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:53,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:53,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-14 17:51:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:53,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:53,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:53,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:53,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:53,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:53,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:53,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:53,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:53,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:53,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:53,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 12 proven. 1089 refuted. 0 times theorem prover too weak. 1221 trivial. 0 not checked. [2020-10-14 17:51:53,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821382805] [2020-10-14 17:51:53,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:51:53,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 17:51:53,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668655257] [2020-10-14 17:51:53,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 17:51:53,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:51:53,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 17:51:53,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 17:51:53,635 INFO L87 Difference]: Start difference. First operand 201 states and 204 transitions. Second operand 37 states. [2020-10-14 17:51:54,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:51:54,098 INFO L93 Difference]: Finished difference Result 332 states and 338 transitions. [2020-10-14 17:51:54,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 17:51:54,101 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 197 [2020-10-14 17:51:54,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:51:54,102 INFO L225 Difference]: With dead ends: 332 [2020-10-14 17:51:54,102 INFO L226 Difference]: Without dead ends: 207 [2020-10-14 17:51:54,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 17:51:54,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-14 17:51:54,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-10-14 17:51:54,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-14 17:51:54,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 208 transitions. [2020-10-14 17:51:54,121 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 208 transitions. Word has length 197 [2020-10-14 17:51:54,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:51:54,121 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 208 transitions. [2020-10-14 17:51:54,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 17:51:54,121 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 208 transitions. [2020-10-14 17:51:54,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-14 17:51:54,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:51:54,123 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:51:54,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 17:51:54,123 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:51:54,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:51:54,123 INFO L82 PathProgramCache]: Analyzing trace with hash -318779428, now seen corresponding path program 39 times [2020-10-14 17:51:54,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:51:54,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12232995] [2020-10-14 17:51:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:51:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:54,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:54,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:54,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:59,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:59,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-14 17:51:59,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:51:59,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-14 17:51:59,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:59,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:59,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 17:51:59,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:51:59,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 17:51:59,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:59,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:51:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:59,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:59,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:59,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:51:59,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:59,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:59,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:59,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:59,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:59,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:59,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:59,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:59,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-14 17:51:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:59,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:59,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:59,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:59,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:59,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:59,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:59,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:59,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:59,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 17:51:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:59,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:59,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:59,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:59,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:59,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:59,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:59,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:59,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:59,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:59,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:59,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:59,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-14 17:51:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:59,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:59,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:59,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:59,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:59,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:59,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:59,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:59,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:59,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-14 17:51:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:59,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:59,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:59,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:59,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:59,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:59,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:59,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:59,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:59,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:59,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:59,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:59,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 17:51:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:59,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:59,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:59,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:59,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:59,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:59,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:59,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:59,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:59,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-14 17:51:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:59,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:59,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:59,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:59,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:59,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:59,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:59,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:59,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:59,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:59,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:59,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2456 backedges. 12 proven. 1156 refuted. 0 times theorem prover too weak. 1288 trivial. 0 not checked. [2020-10-14 17:51:59,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12232995] [2020-10-14 17:51:59,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:51:59,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 17:51:59,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286040747] [2020-10-14 17:51:59,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 17:51:59,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:51:59,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 17:51:59,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 17:51:59,958 INFO L87 Difference]: Start difference. First operand 205 states and 208 transitions. Second operand 38 states. [2020-10-14 17:52:00,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:52:00,437 INFO L93 Difference]: Finished difference Result 338 states and 344 transitions. [2020-10-14 17:52:00,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 17:52:00,437 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 201 [2020-10-14 17:52:00,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:52:00,439 INFO L225 Difference]: With dead ends: 338 [2020-10-14 17:52:00,439 INFO L226 Difference]: Without dead ends: 211 [2020-10-14 17:52:00,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 17:52:00,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-14 17:52:00,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2020-10-14 17:52:00,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-14 17:52:00,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 212 transitions. [2020-10-14 17:52:00,456 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 212 transitions. Word has length 201 [2020-10-14 17:52:00,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:52:00,456 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 212 transitions. [2020-10-14 17:52:00,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 17:52:00,456 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 212 transitions. [2020-10-14 17:52:00,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-14 17:52:00,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:52:00,458 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:52:00,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 17:52:00,458 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:52:00,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:52:00,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1972589016, now seen corresponding path program 40 times [2020-10-14 17:52:00,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:52:00,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539719139] [2020-10-14 17:52:00,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:52:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:00,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:00,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:00,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:05,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:05,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-14 17:52:05,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:52:05,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5228 [2020-10-14 17:52:05,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:05,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 17:52:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 17:52:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 17:52:05,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:06,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:52:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:06,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:06,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:06,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:52:06,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:06,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:52:06,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:06,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:06,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:06,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:52:06,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:06,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:06,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 17:52:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:06,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:06,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:06,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:06,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:06,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:52:06,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:06,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:06,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:06,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:06,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:06,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:06,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-14 17:52:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:06,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:06,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:06,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:06,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:06,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:06,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:06,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:06,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:06,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:06,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:06,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:06,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 17:52:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:06,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:06,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:06,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:06,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:06,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:06,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:06,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:06,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:06,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:06,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:06,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:06,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-14 17:52:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:06,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:06,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:06,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:06,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:06,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:06,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:06,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:06,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:06,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:06,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:06,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:06,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-14 17:52:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:06,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:06,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:06,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:06,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:06,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:06,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:06,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:06,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:06,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:06,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:06,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:06,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-14 17:52:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:06,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:06,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:06,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:06,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:06,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:06,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:06,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:06,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:06,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:06,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:06,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2594 backedges. 12 proven. 1225 refuted. 0 times theorem prover too weak. 1357 trivial. 0 not checked. [2020-10-14 17:52:06,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539719139] [2020-10-14 17:52:06,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:52:06,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-14 17:52:06,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601506710] [2020-10-14 17:52:06,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-14 17:52:06,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:52:06,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-14 17:52:06,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 17:52:06,502 INFO L87 Difference]: Start difference. First operand 209 states and 212 transitions. Second operand 39 states. [2020-10-14 17:52:06,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:52:06,916 INFO L93 Difference]: Finished difference Result 344 states and 350 transitions. [2020-10-14 17:52:06,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 17:52:06,917 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 205 [2020-10-14 17:52:06,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:52:06,918 INFO L225 Difference]: With dead ends: 344 [2020-10-14 17:52:06,919 INFO L226 Difference]: Without dead ends: 215 [2020-10-14 17:52:06,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 17:52:06,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-14 17:52:06,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2020-10-14 17:52:06,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-14 17:52:06,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 216 transitions. [2020-10-14 17:52:06,943 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 216 transitions. Word has length 205 [2020-10-14 17:52:06,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:52:06,943 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 216 transitions. [2020-10-14 17:52:06,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-14 17:52:06,943 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 216 transitions. [2020-10-14 17:52:06,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-14 17:52:06,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:52:06,945 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:52:06,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 17:52:06,945 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:52:06,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:52:06,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1229874644, now seen corresponding path program 41 times [2020-10-14 17:52:06,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:52:06,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303852263] [2020-10-14 17:52:06,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:52:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:06,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:06,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:07,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:12,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:12,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-14 17:52:12,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:52:12,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5984 [2020-10-14 17:52:12,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:12,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 17:52:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 17:52:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 17:52:12,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:13,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:52:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:13,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:13,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:13,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:52:13,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:13,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:52:13,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:13,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:52:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:13,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:13,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 17:52:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:13,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:13,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:13,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:13,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:13,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:13,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:13,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:13,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:13,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:13,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:13,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:13,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-14 17:52:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:13,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:13,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:13,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:13,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:13,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:13,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:13,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:13,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:13,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:13,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:13,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:13,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-14 17:52:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:13,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:13,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:13,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:13,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:13,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:13,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:13,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:13,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:13,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:13,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:13,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:13,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 17:52:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:13,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:13,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:13,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:13,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:13,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:13,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:13,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:13,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:13,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:13,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:13,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:13,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-14 17:52:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:13,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:13,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:13,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:13,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:13,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:13,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:13,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-14 17:52:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:13,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:13,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:13,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:13,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:13,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:13,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:13,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:13,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:13,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:13,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:13,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2736 backedges. 12 proven. 1296 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2020-10-14 17:52:13,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303852263] [2020-10-14 17:52:13,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:52:13,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 17:52:13,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185818487] [2020-10-14 17:52:13,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 17:52:13,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:52:13,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 17:52:13,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 17:52:13,770 INFO L87 Difference]: Start difference. First operand 213 states and 216 transitions. Second operand 40 states. [2020-10-14 17:52:14,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:52:14,136 INFO L93 Difference]: Finished difference Result 350 states and 356 transitions. [2020-10-14 17:52:14,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-14 17:52:14,136 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 209 [2020-10-14 17:52:14,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:52:14,138 INFO L225 Difference]: With dead ends: 350 [2020-10-14 17:52:14,138 INFO L226 Difference]: Without dead ends: 219 [2020-10-14 17:52:14,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 17:52:14,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-14 17:52:14,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 217. [2020-10-14 17:52:14,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-14 17:52:14,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 220 transitions. [2020-10-14 17:52:14,162 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 220 transitions. Word has length 209 [2020-10-14 17:52:14,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:52:14,162 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 220 transitions. [2020-10-14 17:52:14,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-14 17:52:14,163 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 220 transitions. [2020-10-14 17:52:14,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-14 17:52:14,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:52:14,164 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:52:14,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 17:52:14,164 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:52:14,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:52:14,165 INFO L82 PathProgramCache]: Analyzing trace with hash 228330448, now seen corresponding path program 42 times [2020-10-14 17:52:14,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:52:14,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808072141] [2020-10-14 17:52:14,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:52:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:14,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:14,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:14,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:19,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:19,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-14 17:52:19,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:52:19,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5755 [2020-10-14 17:52:19,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:19,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:19,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 17:52:19,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:52:19,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 17:52:19,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:20,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:52:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:20,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:20,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:20,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:52:20,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:20,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:52:20,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:20,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:20,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:20,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:52:20,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:20,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:20,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-14 17:52:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:20,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:20,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:20,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:20,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:20,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:20,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:20,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:20,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:20,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:20,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:20,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:20,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 17:52:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:20,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:20,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:20,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:20,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:20,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:20,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:20,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:20,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:20,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:20,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:20,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:20,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-14 17:52:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:20,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:20,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:20,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:20,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:20,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:20,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:20,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:20,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:20,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:20,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:20,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:20,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-14 17:52:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:20,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:20,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:20,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:20,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:20,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:20,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:20,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:20,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:20,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:20,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:20,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:20,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-14 17:52:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:20,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:20,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:20,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:20,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:20,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:20,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:20,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:20,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:20,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-14 17:52:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:20,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:20,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:20,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:20,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:20,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:20,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:20,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:20,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:20,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:20,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:20,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:20,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 12 proven. 1369 refuted. 0 times theorem prover too weak. 1501 trivial. 0 not checked. [2020-10-14 17:52:20,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808072141] [2020-10-14 17:52:20,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:52:20,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-14 17:52:20,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104560389] [2020-10-14 17:52:20,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-14 17:52:20,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:52:20,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-14 17:52:20,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 17:52:20,795 INFO L87 Difference]: Start difference. First operand 217 states and 220 transitions. Second operand 41 states. [2020-10-14 17:52:21,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:52:21,230 INFO L93 Difference]: Finished difference Result 356 states and 362 transitions. [2020-10-14 17:52:21,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 17:52:21,230 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 213 [2020-10-14 17:52:21,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:52:21,232 INFO L225 Difference]: With dead ends: 356 [2020-10-14 17:52:21,232 INFO L226 Difference]: Without dead ends: 223 [2020-10-14 17:52:21,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 17:52:21,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-14 17:52:21,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2020-10-14 17:52:21,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-14 17:52:21,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 224 transitions. [2020-10-14 17:52:21,261 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 224 transitions. Word has length 213 [2020-10-14 17:52:21,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:52:21,261 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 224 transitions. [2020-10-14 17:52:21,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-14 17:52:21,261 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 224 transitions. [2020-10-14 17:52:21,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 17:52:21,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:52:21,264 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:52:21,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 17:52:21,264 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:52:21,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:52:21,265 INFO L82 PathProgramCache]: Analyzing trace with hash -379108404, now seen corresponding path program 43 times [2020-10-14 17:52:21,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:52:21,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394293365] [2020-10-14 17:52:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:52:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:21,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:21,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:21,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:26,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:26,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-14 17:52:26,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:52:26,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5252 [2020-10-14 17:52:26,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:26,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-14 17:52:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:52:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 17:52:26,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:27,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:52:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:27,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:27,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:27,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:52:27,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:27,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:52:27,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:27,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:27,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:27,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:52:27,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:27,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:27,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-14 17:52:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:27,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:27,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:27,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:27,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:27,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:27,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:27,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:27,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:27,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:27,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:27,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:27,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-14 17:52:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:27,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:27,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:27,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:27,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:27,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:27,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:27,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:27,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:27,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:27,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:27,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:27,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 17:52:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:27,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:27,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:27,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:27,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:27,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:27,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:27,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:27,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:27,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:27,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:27,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:27,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-14 17:52:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:27,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:27,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:27,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:27,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:27,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:27,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:27,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:27,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:27,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:27,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-14 17:52:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:27,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:27,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:27,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:27,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:27,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:27,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:27,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:27,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:27,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-14 17:52:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:27,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:27,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:27,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:27,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:27,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:27,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:27,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:27,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:27,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3032 backedges. 12 proven. 1444 refuted. 0 times theorem prover too weak. 1576 trivial. 0 not checked. [2020-10-14 17:52:27,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394293365] [2020-10-14 17:52:27,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:52:27,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-14 17:52:27,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984722950] [2020-10-14 17:52:27,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-14 17:52:27,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:52:27,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-14 17:52:27,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 17:52:27,456 INFO L87 Difference]: Start difference. First operand 221 states and 224 transitions. Second operand 42 states. [2020-10-14 17:52:27,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:52:27,912 INFO L93 Difference]: Finished difference Result 362 states and 368 transitions. [2020-10-14 17:52:27,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 17:52:27,912 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 217 [2020-10-14 17:52:27,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:52:27,914 INFO L225 Difference]: With dead ends: 362 [2020-10-14 17:52:27,915 INFO L226 Difference]: Without dead ends: 227 [2020-10-14 17:52:27,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 17:52:27,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-14 17:52:27,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2020-10-14 17:52:27,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-14 17:52:27,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 228 transitions. [2020-10-14 17:52:27,939 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 228 transitions. Word has length 217 [2020-10-14 17:52:27,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:52:27,939 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 228 transitions. [2020-10-14 17:52:27,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-14 17:52:27,939 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 228 transitions. [2020-10-14 17:52:27,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-14 17:52:27,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:52:27,941 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:52:27,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 17:52:27,941 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:52:27,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:52:27,942 INFO L82 PathProgramCache]: Analyzing trace with hash 85659080, now seen corresponding path program 44 times [2020-10-14 17:52:27,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:52:27,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676246980] [2020-10-14 17:52:27,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:52:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:27,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:27,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:28,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:33,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:33,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-14 17:52:33,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:52:33,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5203 [2020-10-14 17:52:33,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:33,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 17:52:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 17:52:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 17:52:33,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:34,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:52:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:34,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:34,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:34,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:52:34,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:34,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:34,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:34,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:34,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:34,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:52:34,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:34,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:34,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 17:52:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:34,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:34,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:34,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:34,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:34,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:34,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:34,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:34,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:34,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-14 17:52:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:34,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:34,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:34,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:34,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:34,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:34,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:34,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:34,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:34,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:34,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:34,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:34,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-14 17:52:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:34,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:34,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:34,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:34,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:34,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:34,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:34,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:34,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:34,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-14 17:52:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:34,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:34,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:34,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:34,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:34,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:34,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:34,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:34,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:34,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-14 17:52:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:34,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:34,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:34,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:34,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:34,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:34,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:34,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:34,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:34,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:34,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:34,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:34,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-14 17:52:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:52:34,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:52:34,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:52:34,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:52:34,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:52:34,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:52:34,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:52:34,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:52:34,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:52:34,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:52:34,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:52:34,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:52:34,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 12 proven. 1521 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2020-10-14 17:52:34,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676246980] [2020-10-14 17:52:34,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:52:34,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-14 17:52:34,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125561653] [2020-10-14 17:52:34,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-14 17:52:34,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:52:34,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-14 17:52:34,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 17:52:34,141 INFO L87 Difference]: Start difference. First operand 225 states and 228 transitions. Second operand 43 states.