/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-crafted/bAnd3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 17:35:31,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 17:35:31,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 17:35:31,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 17:35:31,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 17:35:31,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 17:35:31,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 17:35:31,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 17:35:31,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 17:35:31,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 17:35:31,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 17:35:31,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 17:35:31,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 17:35:31,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 17:35:31,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 17:35:31,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 17:35:31,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 17:35:31,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 17:35:31,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 17:35:31,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 17:35:31,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 17:35:31,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 17:35:31,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 17:35:31,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 17:35:31,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 17:35:31,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 17:35:31,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 17:35:31,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 17:35:31,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 17:35:31,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 17:35:31,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 17:35:31,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 17:35:31,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 17:35:31,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 17:35:31,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 17:35:31,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 17:35:31,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 17:35:31,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 17:35:31,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 17:35:31,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 17:35:31,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 17:35:31,164 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 17:35:31,205 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 17:35:31,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 17:35:31,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 17:35:31,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 17:35:31,209 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 17:35:31,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 17:35:31,209 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 17:35:31,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 17:35:31,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 17:35:31,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 17:35:31,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 17:35:31,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 17:35:31,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 17:35:31,212 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 17:35:31,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 17:35:31,213 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 17:35:31,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 17:35:31,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 17:35:31,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 17:35:31,214 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 17:35:31,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 17:35:31,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:35:31,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 17:35:31,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 17:35:31,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 17:35:31,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 17:35:31,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 17:35:31,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 17:35:31,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 17:35:31,216 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 17:35:31,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 17:35:31,531 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 17:35:31,535 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 17:35:31,536 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 17:35:31,539 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 17:35:31,540 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bAnd3.i [2020-10-14 17:35:31,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7dfed6564/b9ad12f5e2eb4ed4ad06b7eaec1ada9d/FLAG528154f82 [2020-10-14 17:35:32,128 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 17:35:32,128 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bAnd3.i [2020-10-14 17:35:32,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7dfed6564/b9ad12f5e2eb4ed4ad06b7eaec1ada9d/FLAG528154f82 [2020-10-14 17:35:32,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7dfed6564/b9ad12f5e2eb4ed4ad06b7eaec1ada9d [2020-10-14 17:35:32,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 17:35:32,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 17:35:32,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 17:35:32,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 17:35:32,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 17:35:32,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:35:32" (1/1) ... [2020-10-14 17:35:32,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad4c324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:32, skipping insertion in model container [2020-10-14 17:35:32,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:35:32" (1/1) ... [2020-10-14 17:35:32,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 17:35:32,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 17:35:32,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:35:32,771 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 17:35:32,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:35:32,819 INFO L208 MainTranslator]: Completed translation [2020-10-14 17:35:32,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:32 WrapperNode [2020-10-14 17:35:32,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 17:35:32,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 17:35:32,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 17:35:32,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 17:35:32,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:32" (1/1) ... [2020-10-14 17:35:32,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:32" (1/1) ... [2020-10-14 17:35:32,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:32" (1/1) ... [2020-10-14 17:35:32,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:32" (1/1) ... [2020-10-14 17:35:32,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:32" (1/1) ... [2020-10-14 17:35:32,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:32" (1/1) ... [2020-10-14 17:35:32,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:32" (1/1) ... [2020-10-14 17:35:32,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 17:35:32,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 17:35:32,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 17:35:32,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 17:35:32,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:32" (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 17:35:33,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 17:35:33,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 17:35:33,055 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2020-10-14 17:35:33,055 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 17:35:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 17:35:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 17:35:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2020-10-14 17:35:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 17:35:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 17:35:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 17:35:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 17:35:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 17:35:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 17:35:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 17:35:33,383 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 17:35:33,384 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 17:35:33,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:35:33 BoogieIcfgContainer [2020-10-14 17:35:33,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 17:35:33,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 17:35:33,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 17:35:33,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 17:35:33,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:35:32" (1/3) ... [2020-10-14 17:35:33,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0d8c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:35:33, skipping insertion in model container [2020-10-14 17:35:33,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:32" (2/3) ... [2020-10-14 17:35:33,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0d8c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:35:33, skipping insertion in model container [2020-10-14 17:35:33,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:35:33" (3/3) ... [2020-10-14 17:35:33,398 INFO L109 eAbstractionObserver]: Analyzing ICFG bAnd3.i [2020-10-14 17:35:33,411 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 17:35:33,421 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 17:35:33,441 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 17:35:33,478 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 17:35:33,478 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 17:35:33,478 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 17:35:33,478 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 17:35:33,479 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 17:35:33,479 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 17:35:33,479 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 17:35:33,479 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 17:35:33,511 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-14 17:35:33,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 17:35:33,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:33,520 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:35:33,520 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:33,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:33,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-14 17:35:33,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:33,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733155444] [2020-10-14 17:35:33,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:33,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:33,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:33,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:33,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:34,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:34,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:34,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 17:35:34,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:35:34,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 910 [2020-10-14 17:35:34,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:34,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:34,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:34,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:35:34,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:35:34,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 17:35:34,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:34,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:34,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:34,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:34,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:34,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 17:35:34,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:34,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:34,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:34,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:34,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:34,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:35:34,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:35:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:34,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:34,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:34,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:35:34,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:34,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 17:35:34,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:34,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:34,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:34,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:34,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:35:34,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:34,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 17:35:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:34,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:34,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:34,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:34,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:35:34,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:34,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 17:35:34,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:34,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:34,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:34,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:34,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:35:34,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:35:34,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 17:35:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:34,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:34,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:34,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:34,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:35:34,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:34,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 17:35:34,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:34,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:34,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:34,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:34,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:35:34,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 17:35:34,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733155444] [2020-10-14 17:35:34,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:35:34,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 17:35:34,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697422158] [2020-10-14 17:35:34,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 17:35:34,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:34,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 17:35:34,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 17:35:34,832 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2020-10-14 17:35:34,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:34,982 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2020-10-14 17:35:34,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 17:35:34,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-14 17:35:34,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:34,993 INFO L225 Difference]: With dead ends: 56 [2020-10-14 17:35:34,994 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 17:35:34,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:35:35,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 17:35:35,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-14 17:35:35,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 17:35:35,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-14 17:35:35,044 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-14 17:35:35,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:35,045 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-14 17:35:35,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 17:35:35,045 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-14 17:35:35,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 17:35:35,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:35,051 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:35:35,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 17:35:35,052 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:35,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:35,052 INFO L82 PathProgramCache]: Analyzing trace with hash 540504713, now seen corresponding path program 1 times [2020-10-14 17:35:35,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:35,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650689451] [2020-10-14 17:35:35,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:35,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:35,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:35,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:35,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:35,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:37,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:37,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 17:35:37,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:35:37,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2188 [2020-10-14 17:35:37,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:37,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:37,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:35:37,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 17:35:37,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:35:37,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:37,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:37,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:37,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:37,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:37,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:37,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:35:37,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:37,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:37,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:37,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:37,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:37,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:37,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:35:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:37,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:37,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:37,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:37,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:35:37,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:37,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 17:35:37,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:37,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:37,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:35:37,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:37,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:35:37,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:37,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 17:35:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:37,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:37,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:37,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:37,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:35:37,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:37,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 17:35:37,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:37,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:35:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:37,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:35:37,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:37,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 17:35:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:37,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:37,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:37,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:35:37,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:37,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 17:35:37,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:37,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:35:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:35:37,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 17:35:37,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650689451] [2020-10-14 17:35:37,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:35:37,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 17:35:37,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437810577] [2020-10-14 17:35:37,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 17:35:37,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:37,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 17:35:37,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:35:37,411 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 5 states. [2020-10-14 17:35:37,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:37,520 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-10-14 17:35:37,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 17:35:37,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-10-14 17:35:37,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:37,522 INFO L225 Difference]: With dead ends: 48 [2020-10-14 17:35:37,523 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 17:35:37,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:35:37,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 17:35:37,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-14 17:35:37,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 17:35:37,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-14 17:35:37,533 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 38 [2020-10-14 17:35:37,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:37,533 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-14 17:35:37,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 17:35:37,533 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-14 17:35:37,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 17:35:37,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:37,535 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:35:37,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 17:35:37,536 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:37,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:37,536 INFO L82 PathProgramCache]: Analyzing trace with hash -919236729, now seen corresponding path program 2 times [2020-10-14 17:35:37,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:37,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111627354] [2020-10-14 17:35:37,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:37,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:37,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:37,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:37,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:37,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:42,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:42,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 17:35:42,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:35:42,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4733 [2020-10-14 17:35:42,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:42,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:42,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:35:42,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 17:35:42,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:42,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:42,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:42,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:42,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:42,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:42,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:42,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:35:42,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:42,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:42,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:42,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:42,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:35:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:42,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:42,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:42,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:42,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:35:42,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:42,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 17:35:42,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:42,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:42,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:35:42,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:42,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:42,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:42,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 17:35:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:42,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:42,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:42,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:42,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:35:42,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:42,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 17:35:42,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:42,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:42,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:35:42,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:42,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:42,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:42,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:35:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:42,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:42,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:42,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:35:42,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:42,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 17:35:42,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:42,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:35:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:42,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:42,423 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 17:35:42,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111627354] [2020-10-14 17:35:42,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:35:42,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 17:35:42,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851950204] [2020-10-14 17:35:42,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 17:35:42,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:42,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 17:35:42,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:35:42,426 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-14 17:35:42,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:42,546 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-14 17:35:42,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 17:35:42,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-14 17:35:42,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:42,548 INFO L225 Difference]: With dead ends: 52 [2020-10-14 17:35:42,548 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 17:35:42,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:35:42,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 17:35:42,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-14 17:35:42,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 17:35:42,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-14 17:35:42,557 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 44 [2020-10-14 17:35:42,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:42,557 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-14 17:35:42,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 17:35:42,558 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-14 17:35:42,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 17:35:42,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:42,559 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:35:42,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 17:35:42,560 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:42,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:42,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1824311803, now seen corresponding path program 3 times [2020-10-14 17:35:42,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:42,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852298091] [2020-10-14 17:35:42,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:42,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:42,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:42,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:42,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:43,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:47,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:47,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 17:35:47,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:35:47,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:35:47,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:47,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:47,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:35:47,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 17:35:47,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 17:35:47,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 17:35:47,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:47,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:47,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:47,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:47,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:47,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:47,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:47,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:47,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:47,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:47,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:47,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:47,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:35:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:47,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:47,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:47,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:47,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 17:35:47,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:47,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 17:35:47,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:47,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:47,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:35:47,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:47,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 17:35:47,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:47,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:35:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:47,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:47,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:47,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 17:35:47,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:47,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 17:35:47,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:47,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:35:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 17:35:47,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:47,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 17:35:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:47,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:47,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:47,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:47,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 17:35:47,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:47,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 17:35:47,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:47,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:47,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:35:47,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:47,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 17:35:47,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:47,744 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-14 17:35:47,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852298091] [2020-10-14 17:35:47,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:35:47,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 17:35:47,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646118058] [2020-10-14 17:35:47,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 17:35:47,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:47,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 17:35:47,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:35:47,749 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-14 17:35:47,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:47,919 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-14 17:35:47,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 17:35:47,919 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-14 17:35:47,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:47,920 INFO L225 Difference]: With dead ends: 56 [2020-10-14 17:35:47,920 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 17:35:47,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:35:47,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 17:35:47,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-14 17:35:47,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 17:35:47,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-14 17:35:47,937 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 50 [2020-10-14 17:35:47,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:47,937 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-14 17:35:47,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 17:35:47,938 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-14 17:35:47,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 17:35:47,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:47,940 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:35:47,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 17:35:47,941 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:47,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:47,941 INFO L82 PathProgramCache]: Analyzing trace with hash 79349251, now seen corresponding path program 4 times [2020-10-14 17:35:47,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:47,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837339272] [2020-10-14 17:35:47,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:47,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:47,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:47,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:47,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:48,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:52,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:52,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 17:35:52,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:35:52,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:35:52,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:52,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:35:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:35:52,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 17:35:52,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:35:52,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:52,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:52,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:52,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:52,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:52,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:52,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:52,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:52,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:52,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:35:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:52,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:53,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:53,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 17:35:53,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:53,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 17:35:53,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:53,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:53,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:35:53,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:53,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 17:35:53,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:53,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 17:35:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:53,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:53,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:53,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:53,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 17:35:53,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:53,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 17:35:53,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:53,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:53,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:35:53,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:53,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 17:35:53,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:53,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:35:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:53,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:53,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:53,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:53,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 17:35:53,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:53,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 17:35:53,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:53,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:53,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:35:53,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 17:35:53,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:53,148 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 17:35:53,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837339272] [2020-10-14 17:35:53,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:35:53,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 17:35:53,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95275974] [2020-10-14 17:35:53,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 17:35:53,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:53,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 17:35:53,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 17:35:53,151 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-10-14 17:35:53,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:53,323 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-14 17:35:53,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 17:35:53,324 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-14 17:35:53,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:53,325 INFO L225 Difference]: With dead ends: 60 [2020-10-14 17:35:53,325 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 17:35:53,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:35:53,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 17:35:53,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-14 17:35:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 17:35:53,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-14 17:35:53,332 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 56 [2020-10-14 17:35:53,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:53,333 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-14 17:35:53,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 17:35:53,333 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-14 17:35:53,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 17:35:53,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:53,334 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:35:53,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 17:35:53,334 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:53,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:53,335 INFO L82 PathProgramCache]: Analyzing trace with hash -754016383, now seen corresponding path program 5 times [2020-10-14 17:35:53,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:53,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228221832] [2020-10-14 17:35:53,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:53,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:53,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:53,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:53,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:55,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:58,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:58,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 17:35:58,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:35:58,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:35:58,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:58,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:58,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:35:58,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:35:58,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:35:58,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:58,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:58,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:58,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:58,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:58,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:58,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:58,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:58,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:58,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:58,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:35:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:58,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:58,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:58,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 17:35:58,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:58,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 17:35:58,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:58,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:35:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:35:58,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:58,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 17:35:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:58,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:58,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:58,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:58,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 17:35:58,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:58,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 17:35:58,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:58,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:58,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:35:58,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:58,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:35:58,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:58,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 17:35:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:58,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:58,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:58,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:58,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 17:35:58,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:58,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 17:35:58,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:58,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:58,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:35:58,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:58,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:35:58,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-14 17:35:58,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228221832] [2020-10-14 17:35:58,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:35:58,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 17:35:58,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069426748] [2020-10-14 17:35:58,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 17:35:58,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:58,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 17:35:58,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:35:58,534 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 9 states. [2020-10-14 17:35:58,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:58,726 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-14 17:35:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 17:35:58,726 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-14 17:35:58,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:58,727 INFO L225 Difference]: With dead ends: 64 [2020-10-14 17:35:58,728 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 17:35:58,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:35:58,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 17:35:58,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-14 17:35:58,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 17:35:58,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-14 17:35:58,734 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 62 [2020-10-14 17:35:58,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:58,737 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-14 17:35:58,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 17:35:58,737 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-14 17:35:58,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 17:35:58,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:58,739 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:35:58,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 17:35:58,739 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:58,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:58,740 INFO L82 PathProgramCache]: Analyzing trace with hash 2026447487, now seen corresponding path program 6 times [2020-10-14 17:35:58,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:58,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852714656] [2020-10-14 17:35:58,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:58,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:58,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:58,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:58,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:00,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:03,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:03,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 17:36:03,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:36:03,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:36:03,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:03,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:03,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:36:03,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:36:03,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:36:03,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:03,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:03,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:03,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:03,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:03,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:03,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:03,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:03,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:03,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:03,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:03,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:03,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:03,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 17:36:03,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:03,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 17:36:03,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:03,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:36:03,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:03,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:36:03,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:03,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 17:36:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:03,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:03,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:03,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:03,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 17:36:03,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:03,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 17:36:03,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:03,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:03,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:36:03,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:03,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:36:03,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:03,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:36:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:03,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:03,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:03,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:03,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 17:36:03,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:03,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 17:36:03,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:03,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:36:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:36:03,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-14 17:36:03,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852714656] [2020-10-14 17:36:03,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:03,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 17:36:03,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428310771] [2020-10-14 17:36:03,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 17:36:03,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:03,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 17:36:03,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:36:03,939 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 10 states. [2020-10-14 17:36:04,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:04,118 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-14 17:36:04,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 17:36:04,119 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-14 17:36:04,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:04,120 INFO L225 Difference]: With dead ends: 68 [2020-10-14 17:36:04,120 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 17:36:04,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:36:04,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 17:36:04,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-14 17:36:04,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 17:36:04,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-14 17:36:04,127 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 68 [2020-10-14 17:36:04,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:04,128 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-14 17:36:04,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 17:36:04,128 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-14 17:36:04,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 17:36:04,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:04,129 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:36:04,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 17:36:04,130 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:04,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:04,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1267511037, now seen corresponding path program 7 times [2020-10-14 17:36:04,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:04,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524627913] [2020-10-14 17:36:04,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:04,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:04,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:04,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:04,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:06,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:09,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:09,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 17:36:09,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:36:09,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:36:09,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:09,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:09,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:36:09,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 17:36:09,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 17:36:09,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:09,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:09,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:09,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:09,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:09,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:09,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:09,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:09,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:09,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:09,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:09,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:09,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:09,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:09,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 17:36:09,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:09,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 17:36:09,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:09,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:09,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:36:09,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:09,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 17:36:09,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:09,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 17:36:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:09,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:09,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:09,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 17:36:09,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:09,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 17:36:09,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:09,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:09,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:36:09,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:09,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 17:36:09,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:09,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 17:36:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:09,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:09,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:09,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:09,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 17:36:09,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:09,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 17:36:09,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:09,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:09,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:36:09,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:09,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 17:36:09,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:09,361 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-14 17:36:09,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524627913] [2020-10-14 17:36:09,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:09,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 17:36:09,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048346939] [2020-10-14 17:36:09,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 17:36:09,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:09,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 17:36:09,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:36:09,364 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 11 states. [2020-10-14 17:36:09,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:09,610 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-14 17:36:09,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 17:36:09,610 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-14 17:36:09,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:09,611 INFO L225 Difference]: With dead ends: 72 [2020-10-14 17:36:09,611 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 17:36:09,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:36:09,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 17:36:09,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-14 17:36:09,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 17:36:09,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-14 17:36:09,619 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 74 [2020-10-14 17:36:09,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:09,620 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-14 17:36:09,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 17:36:09,620 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-14 17:36:09,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 17:36:09,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:09,624 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:36:09,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 17:36:09,624 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:09,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:09,625 INFO L82 PathProgramCache]: Analyzing trace with hash 303277307, now seen corresponding path program 8 times [2020-10-14 17:36:09,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:09,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300511761] [2020-10-14 17:36:09,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:09,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:09,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:09,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:09,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:11,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:14,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:14,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 17:36:14,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:36:14,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:36:14,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:14,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:14,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:36:14,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 17:36:14,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:36:14,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:14,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:14,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:14,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:14,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:14,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:14,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:14,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:14,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:14,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:14,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:14,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:14,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:14,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:14,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:14,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:14,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:14,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 17:36:14,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:14,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 17:36:14,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:14,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:14,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:36:14,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:14,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:36:14,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:14,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:36:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:14,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:14,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:14,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:14,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 17:36:14,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:14,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 17:36:14,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:14,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:14,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:36:14,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:14,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:36:14,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:14,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:36:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:14,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:14,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:14,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 17:36:14,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:14,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 17:36:14,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:14,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:14,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:36:14,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:14,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:36:14,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:14,874 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-14 17:36:14,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300511761] [2020-10-14 17:36:14,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:14,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 17:36:14,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437427497] [2020-10-14 17:36:14,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 17:36:14,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:14,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 17:36:14,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 17:36:14,877 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 12 states. [2020-10-14 17:36:15,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:15,103 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-14 17:36:15,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 17:36:15,104 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-14 17:36:15,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:15,105 INFO L225 Difference]: With dead ends: 76 [2020-10-14 17:36:15,105 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 17:36:15,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:36:15,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 17:36:15,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-14 17:36:15,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 17:36:15,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-14 17:36:15,113 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 80 [2020-10-14 17:36:15,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:15,113 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-14 17:36:15,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 17:36:15,114 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-14 17:36:15,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 17:36:15,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:15,115 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:36:15,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 17:36:15,115 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:15,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:15,116 INFO L82 PathProgramCache]: Analyzing trace with hash 439379065, now seen corresponding path program 9 times [2020-10-14 17:36:15,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:15,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492745575] [2020-10-14 17:36:15,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:15,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:15,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:15,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:15,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:17,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:20,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:20,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 17:36:20,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:36:20,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 17:36:20,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:20,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:20,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:36:20,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 17:36:20,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 17:36:20,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:20,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:20,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:20,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:20,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:20,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:20,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:20,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:20,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:20,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:20,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:20,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:20,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:20,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:20,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 17:36:20,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:20,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 17:36:20,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:20,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:20,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:36:20,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:20,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 17:36:20,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:20,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 17:36:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:20,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:20,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:20,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:20,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 17:36:20,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:20,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 17:36:20,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:20,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:20,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:36:20,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:20,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 17:36:20,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:20,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 17:36:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:20,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:20,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:20,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 17:36:20,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:20,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 17:36:20,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:20,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:36:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 17:36:20,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:20,351 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 17:36:20,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492745575] [2020-10-14 17:36:20,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:20,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 17:36:20,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139131263] [2020-10-14 17:36:20,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 17:36:20,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:20,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 17:36:20,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:36:20,354 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 13 states. [2020-10-14 17:36:20,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:20,647 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-14 17:36:20,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 17:36:20,647 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-14 17:36:20,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:20,648 INFO L225 Difference]: With dead ends: 80 [2020-10-14 17:36:20,648 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 17:36:20,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:36:20,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 17:36:20,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-14 17:36:20,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 17:36:20,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-14 17:36:20,658 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 86 [2020-10-14 17:36:20,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:20,660 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-14 17:36:20,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 17:36:20,660 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-14 17:36:20,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 17:36:20,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:20,664 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:36:20,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 17:36:20,665 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:20,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:20,665 INFO L82 PathProgramCache]: Analyzing trace with hash -825406089, now seen corresponding path program 10 times [2020-10-14 17:36:20,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:20,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836856949] [2020-10-14 17:36:20,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:20,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:20,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:20,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:20,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:24,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:25,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:25,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 17:36:25,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:36:25,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:36:25,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:25,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:36:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-14 17:36:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 17:36:25,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:25,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:25,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:25,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:25,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:25,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:25,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:25,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:25,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:25,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:25,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:25,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:25,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:25,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:25,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 17:36:25,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:25,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 17:36:25,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:25,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:25,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:36:25,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:25,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 17:36:25,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:25,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 17:36:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:25,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:25,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:25,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:25,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 17:36:25,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:25,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 17:36:25,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:25,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:36:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 17:36:25,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:25,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 17:36:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:25,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:25,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:25,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 17:36:25,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:25,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 17:36:25,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:25,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:25,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:36:25,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:25,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 17:36:25,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:25,907 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 17:36:25,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836856949] [2020-10-14 17:36:25,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:25,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 17:36:25,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933013668] [2020-10-14 17:36:25,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 17:36:25,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:25,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 17:36:25,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:36:25,909 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 14 states. [2020-10-14 17:36:26,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:26,189 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-14 17:36:26,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 17:36:26,190 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-14 17:36:26,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:26,191 INFO L225 Difference]: With dead ends: 84 [2020-10-14 17:36:26,191 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 17:36:26,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:36:26,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 17:36:26,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-14 17:36:26,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 17:36:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-14 17:36:26,200 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 92 [2020-10-14 17:36:26,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:26,200 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-14 17:36:26,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 17:36:26,201 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-14 17:36:26,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 17:36:26,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:26,202 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:36:26,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 17:36:26,202 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:26,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:26,203 INFO L82 PathProgramCache]: Analyzing trace with hash -840122379, now seen corresponding path program 11 times [2020-10-14 17:36:26,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:26,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265338766] [2020-10-14 17:36:26,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:26,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:26,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:26,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:26,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:30,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:31,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:31,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 17:36:31,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:36:31,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:36:31,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:31,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:31,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:36:31,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 17:36:31,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:36:31,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:31,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:31,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:31,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:31,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:31,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:31,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:31,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:31,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:31,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:31,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:31,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:31,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:31,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:31,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:31,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:31,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:31,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 17:36:31,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:31,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 17:36:31,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:31,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:31,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:36:31,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:31,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:36:31,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:31,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 17:36:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:31,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:31,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:31,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 17:36:31,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:31,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 17:36:31,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:31,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:31,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:36:31,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:31,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:36:31,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:31,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 17:36:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:31,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:31,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:31,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:31,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 17:36:31,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:31,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 17:36:31,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:31,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:31,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:36:31,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:31,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:36:31,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 363 proven. 726 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 17:36:31,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265338766] [2020-10-14 17:36:31,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:31,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 17:36:31,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588503593] [2020-10-14 17:36:31,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 17:36:31,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:31,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 17:36:31,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:36:31,507 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 15 states. [2020-10-14 17:36:31,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:31,808 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-14 17:36:31,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 17:36:31,808 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2020-10-14 17:36:31,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:31,809 INFO L225 Difference]: With dead ends: 88 [2020-10-14 17:36:31,810 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 17:36:31,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:36:31,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 17:36:31,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-14 17:36:31,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 17:36:31,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-14 17:36:31,818 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 98 [2020-10-14 17:36:31,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:31,818 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-14 17:36:31,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 17:36:31,819 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-14 17:36:31,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 17:36:31,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:31,820 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:36:31,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 17:36:31,820 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:31,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:31,821 INFO L82 PathProgramCache]: Analyzing trace with hash 2125011955, now seen corresponding path program 12 times [2020-10-14 17:36:31,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:31,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167542709] [2020-10-14 17:36:31,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:31,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:31,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:31,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:31,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:36,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:36,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 17:36:36,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:36:36,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 17:36:36,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:36,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:36,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:36:36,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 17:36:36,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:36:36,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:36,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:36,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:36,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:36,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:36,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:36,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:36:36,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:36,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:36,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:36,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:36,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:36,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:36,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:36,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:36,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:36,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:36,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 17:36:36,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:36,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 17:36:36,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:36,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:36:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:36:36,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:37,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 17:36:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:37,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:37,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:37,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 17:36:37,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:37,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 17:36:37,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:37,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:37,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:36:37,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:37,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:36:37,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:37,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 17:36:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:37,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:37,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:37,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:37,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 17:36:37,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:37,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 17:36:37,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:37,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:36:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:36:37,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:37,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 432 proven. 864 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-14 17:36:37,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167542709] [2020-10-14 17:36:37,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:37,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 17:36:37,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815161126] [2020-10-14 17:36:37,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 17:36:37,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:37,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 17:36:37,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 17:36:37,132 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 16 states. [2020-10-14 17:36:37,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:37,502 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-14 17:36:37,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 17:36:37,503 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-10-14 17:36:37,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:37,504 INFO L225 Difference]: With dead ends: 92 [2020-10-14 17:36:37,504 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 17:36:37,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:36:37,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 17:36:37,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-14 17:36:37,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 17:36:37,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-14 17:36:37,525 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 104 [2020-10-14 17:36:37,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:37,527 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-14 17:36:37,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 17:36:37,527 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-14 17:36:37,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 17:36:37,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:37,532 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:36:37,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 17:36:37,532 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:37,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:37,533 INFO L82 PathProgramCache]: Analyzing trace with hash 657768817, now seen corresponding path program 13 times [2020-10-14 17:36:37,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:37,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781090008] [2020-10-14 17:36:37,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:37,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:37,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:37,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:37,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:42,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:42,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 17:36:42,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:36:42,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:36:42,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:42,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:42,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:36:42,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:36:42,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:36:42,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:42,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:42,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:42,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:42,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:42,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:42,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:42,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:42,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:42,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:42,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:42,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:42,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:42,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:42,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:42,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:42,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 17:36:42,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:42,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 17:36:42,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:42,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:36:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:36:42,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:42,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 17:36:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:42,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:42,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:42,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:42,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 17:36:42,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:42,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 17:36:42,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:42,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:36:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:36:42,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:42,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 17:36:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:42,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:42,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:42,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:42,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 17:36:42,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:42,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 17:36:42,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:42,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:42,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:36:42,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:42,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:36:42,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 507 proven. 1014 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-14 17:36:42,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781090008] [2020-10-14 17:36:42,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:42,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 17:36:42,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375544070] [2020-10-14 17:36:43,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 17:36:43,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:43,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 17:36:43,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:36:43,002 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 17 states. [2020-10-14 17:36:43,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:43,429 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-14 17:36:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 17:36:43,430 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 110 [2020-10-14 17:36:43,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:43,431 INFO L225 Difference]: With dead ends: 96 [2020-10-14 17:36:43,431 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 17:36:43,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:36:43,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 17:36:43,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-14 17:36:43,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 17:36:43,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-14 17:36:43,453 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 110 [2020-10-14 17:36:43,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:43,454 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-14 17:36:43,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 17:36:43,458 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-14 17:36:43,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 17:36:43,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:43,461 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:36:43,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 17:36:43,463 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:43,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:43,464 INFO L82 PathProgramCache]: Analyzing trace with hash -2099638161, now seen corresponding path program 14 times [2020-10-14 17:36:43,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:43,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685691934] [2020-10-14 17:36:43,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:43,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:43,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:43,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:43,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:48,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:48,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 17:36:48,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:36:48,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:36:48,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:48,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:48,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:36:48,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 17:36:48,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:36:48,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:48,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:48,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:48,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:48,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:48,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:48,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:48,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:48,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:48,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:48,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:48,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:48,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:48,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:48,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:48,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:48,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:48,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 17:36:48,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:48,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 17:36:48,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:48,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:36:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:36:48,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:48,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 17:36:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:48,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:48,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:48,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 17:36:48,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:48,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 17:36:48,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:48,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:48,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:36:48,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:36:48,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:48,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 17:36:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:48,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:48,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:48,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:48,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 17:36:48,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:48,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 17:36:48,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:48,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:48,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:36:48,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:48,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:36:48,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:48,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 588 proven. 1176 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-14 17:36:48,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685691934] [2020-10-14 17:36:48,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:48,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 17:36:48,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400190627] [2020-10-14 17:36:48,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 17:36:48,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:48,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 17:36:48,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 17:36:48,909 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 18 states. [2020-10-14 17:36:49,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:49,267 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-14 17:36:49,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 17:36:49,267 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 116 [2020-10-14 17:36:49,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:49,268 INFO L225 Difference]: With dead ends: 100 [2020-10-14 17:36:49,268 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 17:36:49,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 17:36:49,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 17:36:49,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-14 17:36:49,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 17:36:49,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-14 17:36:49,279 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 116 [2020-10-14 17:36:49,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:49,279 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-14 17:36:49,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 17:36:49,279 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-14 17:36:49,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 17:36:49,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:49,281 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:36:49,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 17:36:49,281 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:49,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:49,282 INFO L82 PathProgramCache]: Analyzing trace with hash -671389459, now seen corresponding path program 15 times [2020-10-14 17:36:49,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:49,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33342695] [2020-10-14 17:36:49,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:49,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:49,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:49,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:49,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:54,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:54,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 17:36:54,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:36:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 17:36:54,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:54,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:54,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:36:54,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:36:54,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 17:36:54,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:54,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:54,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:54,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:54,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:54,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:54,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:54,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:54,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:54,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:54,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:54,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:54,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:54,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:54,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:54,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:54,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 17:36:54,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:54,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 17:36:54,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:54,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:36:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 17:36:54,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:54,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 17:36:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:54,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:54,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:54,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:54,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 17:36:54,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:54,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 17:36:54,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:54,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:54,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:36:54,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:54,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 17:36:54,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:54,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 17:36:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:54,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:54,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:54,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:54,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 17:36:54,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:54,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 17:36:54,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:54,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:36:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 17:36:54,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:54,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 675 proven. 1350 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-14 17:36:54,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33342695] [2020-10-14 17:36:54,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:54,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 17:36:54,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055336784] [2020-10-14 17:36:54,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 17:36:54,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:54,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 17:36:54,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:36:54,702 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 19 states. [2020-10-14 17:36:55,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:55,151 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-14 17:36:55,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 17:36:55,151 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-14 17:36:55,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:55,152 INFO L225 Difference]: With dead ends: 104 [2020-10-14 17:36:55,152 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 17:36:55,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 17:36:55,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 17:36:55,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-14 17:36:55,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 17:36:55,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-14 17:36:55,165 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 122 [2020-10-14 17:36:55,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:55,166 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-14 17:36:55,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 17:36:55,170 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-14 17:36:55,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 17:36:55,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:55,172 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:36:55,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 17:36:55,172 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:55,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:55,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1911346453, now seen corresponding path program 16 times [2020-10-14 17:36:55,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:55,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181750786] [2020-10-14 17:36:55,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:55,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:55,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:55,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:55,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:00,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:00,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 17:37:00,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:00,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:37:00,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:00,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:00,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:37:00,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 17:37:00,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 17:37:00,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:00,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:00,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:00,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:00,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:00,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:00,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:37:00,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:00,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:00,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:00,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:00,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:00,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:00,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:00,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:00,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:00,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:00,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 17:37:00,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:00,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 17:37:00,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:00,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:37:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 17:37:00,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:00,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 17:37:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:00,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:00,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:00,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 17:37:00,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:00,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 17:37:00,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:00,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:37:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 17:37:00,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:00,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 17:37:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:00,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:00,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:00,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:00,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 17:37:00,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:00,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 17:37:00,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:00,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:00,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:37:00,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:00,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 17:37:00,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:00,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 768 proven. 1536 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-14 17:37:00,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181750786] [2020-10-14 17:37:00,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:00,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 17:37:00,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266430281] [2020-10-14 17:37:00,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 17:37:00,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:00,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 17:37:00,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 17:37:00,604 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 20 states. [2020-10-14 17:37:01,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:01,027 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-14 17:37:01,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 17:37:01,028 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 128 [2020-10-14 17:37:01,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:01,029 INFO L225 Difference]: With dead ends: 108 [2020-10-14 17:37:01,029 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 17:37:01,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 17:37:01,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 17:37:01,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-14 17:37:01,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 17:37:01,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-14 17:37:01,036 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 128 [2020-10-14 17:37:01,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:01,036 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-14 17:37:01,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 17:37:01,037 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-14 17:37:01,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 17:37:01,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:01,038 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:37:01,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 17:37:01,038 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:01,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:01,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1135851113, now seen corresponding path program 17 times [2020-10-14 17:37:01,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:01,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791639261] [2020-10-14 17:37:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:01,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:01,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:01,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:01,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:06,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:06,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 17:37:06,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:06,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 17:37:06,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:06,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:06,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:37:06,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:37:06,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:37:06,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:06,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:06,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:06,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:06,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:06,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:06,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:06,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:06,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:06,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:06,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:06,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:06,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:06,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:06,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:06,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:06,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 17:37:06,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:06,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 17:37:06,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:06,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:06,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:37:06,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:06,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:37:06,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:06,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 17:37:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:06,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:06,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:06,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:06,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 17:37:06,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:06,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 17:37:06,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:06,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:37:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:37:06,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:06,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 17:37:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:06,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:06,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:06,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:06,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 17:37:06,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:06,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 17:37:06,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:06,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:06,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:37:06,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:06,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:37:06,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 867 proven. 1734 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-14 17:37:06,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791639261] [2020-10-14 17:37:06,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:06,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 17:37:06,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970625193] [2020-10-14 17:37:06,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 17:37:06,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:06,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 17:37:06,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:37:06,505 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 21 states. [2020-10-14 17:37:06,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:06,966 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-14 17:37:06,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 17:37:06,966 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 134 [2020-10-14 17:37:06,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:06,967 INFO L225 Difference]: With dead ends: 112 [2020-10-14 17:37:06,967 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 17:37:06,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 17:37:06,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 17:37:06,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-14 17:37:06,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 17:37:06,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-14 17:37:06,978 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 134 [2020-10-14 17:37:06,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:06,979 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-14 17:37:06,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 17:37:06,979 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-14 17:37:06,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 17:37:06,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:06,981 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:37:06,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 17:37:06,981 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:06,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:06,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1686596455, now seen corresponding path program 18 times [2020-10-14 17:37:06,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:06,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243200358] [2020-10-14 17:37:06,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:07,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:07,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:07,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:07,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:12,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:12,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 17:37:12,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:12,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:37:12,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:12,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:12,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:37:12,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-14 17:37:12,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 17:37:12,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:12,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:12,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:12,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:12,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:12,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:12,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:12,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:12,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:12,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:12,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:12,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:12,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:12,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:12,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:12,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:12,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:12,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 17:37:12,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:12,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 17:37:12,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:12,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:37:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 17:37:12,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:12,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 17:37:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:12,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:12,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:12,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 17:37:12,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:12,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 17:37:12,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:12,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:12,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:37:12,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:12,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 17:37:12,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:12,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 17:37:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:12,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:12,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:12,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:12,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 17:37:12,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:12,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 17:37:12,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:12,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:12,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:37:12,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:12,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 17:37:12,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:12,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 972 proven. 1944 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-14 17:37:12,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243200358] [2020-10-14 17:37:12,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:12,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 17:37:12,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616269810] [2020-10-14 17:37:12,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 17:37:12,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:12,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 17:37:12,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:37:12,516 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 22 states. [2020-10-14 17:37:13,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:13,060 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-14 17:37:13,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 17:37:13,061 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 140 [2020-10-14 17:37:13,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:13,063 INFO L225 Difference]: With dead ends: 116 [2020-10-14 17:37:13,063 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 17:37:13,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 17:37:13,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 17:37:13,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-14 17:37:13,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 17:37:13,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-14 17:37:13,080 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 140 [2020-10-14 17:37:13,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:13,081 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-14 17:37:13,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 17:37:13,082 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-14 17:37:13,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 17:37:13,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:13,089 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:37:13,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 17:37:13,089 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:13,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:13,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1062250981, now seen corresponding path program 19 times [2020-10-14 17:37:13,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:13,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98902978] [2020-10-14 17:37:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:13,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:13,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:13,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:13,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:18,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:18,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 17:37:18,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:18,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:37:18,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:18,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:18,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:37:18,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:37:18,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 17:37:18,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:18,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:18,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:18,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:18,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:18,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:18,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:18,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:18,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:18,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:18,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:18,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:18,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:18,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:18,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:18,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:18,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 17:37:18,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:18,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 17:37:18,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:18,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:18,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:37:18,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:18,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 17:37:18,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:18,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 17:37:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:18,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:18,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:18,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:18,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 17:37:18,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:18,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 17:37:18,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:18,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:18,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:37:18,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:18,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 17:37:18,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:18,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 17:37:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:18,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:18,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:18,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:18,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 17:37:18,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:18,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 17:37:18,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:18,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:18,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:37:18,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:18,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 17:37:18,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:18,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 1083 proven. 2166 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-14 17:37:18,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98902978] [2020-10-14 17:37:18,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:18,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 17:37:18,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118533727] [2020-10-14 17:37:18,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 17:37:18,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:18,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 17:37:18,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:37:18,711 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 23 states. [2020-10-14 17:37:19,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:19,226 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-14 17:37:19,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 17:37:19,227 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 146 [2020-10-14 17:37:19,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:19,228 INFO L225 Difference]: With dead ends: 120 [2020-10-14 17:37:19,228 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 17:37:19,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 17:37:19,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 17:37:19,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-14 17:37:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 17:37:19,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-14 17:37:19,240 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 146 [2020-10-14 17:37:19,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:19,241 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-14 17:37:19,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 17:37:19,241 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-14 17:37:19,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 17:37:19,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:19,242 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:37:19,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 17:37:19,243 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:19,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:19,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1679175197, now seen corresponding path program 20 times [2020-10-14 17:37:19,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:19,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475288402] [2020-10-14 17:37:19,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:19,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:19,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:19,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:19,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:24,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:24,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 17:37:24,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:24,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:37:24,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:24,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:24,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:37:24,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-14 17:37:24,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 17:37:24,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:24,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:24,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:24,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:24,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:24,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:24,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:24,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:24,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:24,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:24,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:24,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:24,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:24,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:24,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:24,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:24,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:24,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 17:37:24,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:24,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 17:37:24,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:24,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:24,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:37:24,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:24,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 17:37:24,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:24,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 17:37:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:24,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:24,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:24,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 17:37:24,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:24,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 17:37:24,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:24,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:24,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:37:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 17:37:24,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:24,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 17:37:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:24,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:24,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:24,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:24,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 17:37:24,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:24,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 17:37:24,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:24,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:37:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 17:37:24,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:24,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 1200 proven. 2400 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-14 17:37:24,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475288402] [2020-10-14 17:37:24,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:24,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 17:37:24,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213414501] [2020-10-14 17:37:24,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 17:37:24,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:24,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 17:37:24,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:37:24,857 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 24 states. [2020-10-14 17:37:25,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:25,482 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-14 17:37:25,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 17:37:25,483 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 152 [2020-10-14 17:37:25,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:25,484 INFO L225 Difference]: With dead ends: 124 [2020-10-14 17:37:25,484 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 17:37:25,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 17:37:25,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 17:37:25,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-14 17:37:25,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 17:37:25,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-14 17:37:25,490 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 152 [2020-10-14 17:37:25,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:25,491 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-14 17:37:25,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 17:37:25,491 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-14 17:37:25,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 17:37:25,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:25,492 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:37:25,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 17:37:25,493 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:25,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:25,493 INFO L82 PathProgramCache]: Analyzing trace with hash -783989919, now seen corresponding path program 21 times [2020-10-14 17:37:25,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:25,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533362142] [2020-10-14 17:37:25,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:25,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:25,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:25,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:25,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:30,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:30,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 17:37:30,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:30,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:37:30,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:30,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:37:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:37:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:37:30,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:30,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:30,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:30,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:30,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:30,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:30,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:30,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:30,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:30,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:30,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:30,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:30,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:30,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:30,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:30,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:30,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 17:37:30,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:30,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 17:37:30,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:30,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:30,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:37:30,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:30,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:37:30,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:30,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 17:37:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:30,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:30,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:31,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:31,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 17:37:31,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:31,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 17:37:31,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:31,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:31,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:37:31,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:31,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:37:31,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:31,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 17:37:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:31,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:31,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:31,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:31,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 17:37:31,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:31,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 17:37:31,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:31,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:31,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:37:31,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:31,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:37:31,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1323 proven. 2646 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-14 17:37:31,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533362142] [2020-10-14 17:37:31,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:31,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 17:37:31,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053582740] [2020-10-14 17:37:31,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 17:37:31,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:31,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 17:37:31,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:37:31,182 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 25 states. [2020-10-14 17:37:31,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:31,824 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-10-14 17:37:31,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 17:37:31,825 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 158 [2020-10-14 17:37:31,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:31,826 INFO L225 Difference]: With dead ends: 128 [2020-10-14 17:37:31,826 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 17:37:31,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 17:37:31,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 17:37:31,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-14 17:37:31,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 17:37:31,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-14 17:37:31,836 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 158 [2020-10-14 17:37:31,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:31,836 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-14 17:37:31,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 17:37:31,837 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-14 17:37:31,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 17:37:31,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:31,838 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:37:31,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 17:37:31,840 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:31,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:31,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1533894239, now seen corresponding path program 22 times [2020-10-14 17:37:31,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:31,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913309709] [2020-10-14 17:37:31,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:31,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:31,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:31,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:31,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:36,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:36,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 17:37:36,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:36,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:37:36,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:36,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:37:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:37:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 17:37:36,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:36,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:36,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:36,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:36,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:36,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:36,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:36,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:36,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:36,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:36,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:36,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:36,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:36,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:36,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:36,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:36,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 17:37:36,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:36,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 17:37:36,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:36,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:37:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 17:37:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:37,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 17:37:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:37,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:37,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:37,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:37,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 17:37:37,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:37,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 17:37:37,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:37,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:37,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:37:37,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:37,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 17:37:37,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:37,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 17:37:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:37,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:37,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:37,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:37,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 17:37:37,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:37,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 17:37:37,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:37,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:37,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:37:37,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:37,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 17:37:37,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:37,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4503 backedges. 1452 proven. 2904 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-14 17:37:37,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913309709] [2020-10-14 17:37:37,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:37,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 17:37:37,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302474997] [2020-10-14 17:37:37,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 17:37:37,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:37,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 17:37:37,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 17:37:37,516 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 26 states. [2020-10-14 17:37:38,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:38,168 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2020-10-14 17:37:38,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 17:37:38,169 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 164 [2020-10-14 17:37:38,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:38,170 INFO L225 Difference]: With dead ends: 132 [2020-10-14 17:37:38,170 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 17:37:38,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 17:37:38,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 17:37:38,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-14 17:37:38,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 17:37:38,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-14 17:37:38,176 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 164 [2020-10-14 17:37:38,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:38,177 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-14 17:37:38,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 17:37:38,177 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-14 17:37:38,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 17:37:38,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:38,178 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:37:38,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 17:37:38,178 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:38,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:38,179 INFO L82 PathProgramCache]: Analyzing trace with hash -242973987, now seen corresponding path program 23 times [2020-10-14 17:37:38,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:38,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392049968] [2020-10-14 17:37:38,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:38,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:38,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:38,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:38,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:43,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:43,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 17:37:43,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:43,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:37:43,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:43,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:43,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:37:43,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:37:43,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 17:37:43,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:43,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:43,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:43,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:43,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:43,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:43,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:43,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:43,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:43,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:43,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:43,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:43,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:37:43,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:43,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:43,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:43,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 17:37:43,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:43,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 17:37:43,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:43,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:37:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 17:37:43,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:43,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 17:37:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:43,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:43,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:43,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:43,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 17:37:43,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:43,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 17:37:43,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:43,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:43,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:37:43,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:43,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 17:37:43,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:43,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 17:37:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:43,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:43,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:43,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:43,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 17:37:43,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:43,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 17:37:43,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:43,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:43,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:37:43,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:43,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 17:37:43,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:37:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4914 backedges. 1587 proven. 3174 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-14 17:37:44,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392049968] [2020-10-14 17:37:44,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:44,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 17:37:44,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72983073] [2020-10-14 17:37:44,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 17:37:44,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:44,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 17:37:44,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:37:44,070 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 27 states. [2020-10-14 17:37:45,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:45,027 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-10-14 17:37:45,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 17:37:45,028 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 170 [2020-10-14 17:37:45,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:45,029 INFO L225 Difference]: With dead ends: 136 [2020-10-14 17:37:45,030 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 17:37:45,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 17:37:45,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 17:37:45,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-14 17:37:45,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 17:37:45,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-14 17:37:45,038 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 170 [2020-10-14 17:37:45,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:45,039 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-14 17:37:45,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 17:37:45,039 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-14 17:37:45,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-14 17:37:45,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:45,043 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:37:45,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 17:37:45,046 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:45,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:45,046 INFO L82 PathProgramCache]: Analyzing trace with hash 465899739, now seen corresponding path program 24 times [2020-10-14 17:37:45,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:45,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300114532] [2020-10-14 17:37:45,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:45,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:45,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:45,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:45,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:50,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:50,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 17:37:50,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:50,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 17:37:50,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:50,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:37:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 17:37:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 17:37:50,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:50,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:50,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:50,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:50,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:50,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:50,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:50,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:50,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:50,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:50,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:50,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:50,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:50,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:50,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:50,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:50,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:50,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 17:37:50,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:50,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-14 17:37:50,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:50,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:37:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 17:37:50,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:37:50,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 17:37:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:50,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:51,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:51,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 17:37:51,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:51,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 17:37:51,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:51,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:51,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:37:51,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:51,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 17:37:51,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:37:51,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 17:37:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:51,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:51,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:51,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:51,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 17:37:51,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:51,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 17:37:51,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:51,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:37:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 17:37:51,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 1728 proven. 3456 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-14 17:37:51,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300114532] [2020-10-14 17:37:51,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:51,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 17:37:51,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196901842] [2020-10-14 17:37:51,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 17:37:51,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:51,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 17:37:51,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-14 17:37:51,312 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 28 states. [2020-10-14 17:37:52,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:52,114 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-14 17:37:52,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 17:37:52,115 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 176 [2020-10-14 17:37:52,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:52,116 INFO L225 Difference]: With dead ends: 140 [2020-10-14 17:37:52,116 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 17:37:52,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 17:37:52,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 17:37:52,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-14 17:37:52,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 17:37:52,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-14 17:37:52,124 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 176 [2020-10-14 17:37:52,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:52,125 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-14 17:37:52,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 17:37:52,125 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-14 17:37:52,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 17:37:52,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:52,127 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:37:52,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 17:37:52,127 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:52,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:52,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1233217625, now seen corresponding path program 25 times [2020-10-14 17:37:52,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:52,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978275751] [2020-10-14 17:37:52,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:52,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:52,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:52,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:52,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:57,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:57,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 17:37:57,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:57,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:37:57,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:57,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:57,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:37:57,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 17:37:57,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 17:37:57,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:57,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:57,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:57,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:57,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:57,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:57,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:57,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:57,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:57,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:57,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:57,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:57,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:57,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:57,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:57,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:57,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:57,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 17:37:57,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:57,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 17:37:57,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:57,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:37:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 17:37:57,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:57,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 17:37:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:57,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:57,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:57,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 17:37:57,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:57,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 17:37:57,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:57,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:57,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:37:57,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:57,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 17:37:57,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:57,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 17:37:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:57,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:57,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:57,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:57,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 17:37:57,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:57,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 17:37:57,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:57,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:57,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:37:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 17:37:57,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:57,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 1875 proven. 3750 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-14 17:37:57,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978275751] [2020-10-14 17:37:57,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:57,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 17:37:57,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415116884] [2020-10-14 17:37:57,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 17:37:57,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:57,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 17:37:57,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:37:57,962 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 29 states. [2020-10-14 17:37:58,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:58,810 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-10-14 17:37:58,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 17:37:58,810 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 182 [2020-10-14 17:37:58,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:58,811 INFO L225 Difference]: With dead ends: 144 [2020-10-14 17:37:58,811 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 17:37:58,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 17:37:58,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 17:37:58,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-14 17:37:58,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 17:37:58,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-14 17:37:58,818 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 182 [2020-10-14 17:37:58,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:58,819 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-14 17:37:58,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 17:37:58,819 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-14 17:37:58,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 17:37:58,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:58,820 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:37:58,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 17:37:58,821 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:58,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:58,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1730406743, now seen corresponding path program 26 times [2020-10-14 17:37:58,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:58,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148009892] [2020-10-14 17:37:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:58,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:58,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:58,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:58,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:03,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:03,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 17:38:03,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:03,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:38:03,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:03,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:03,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:38:03,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:38:03,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:38:03,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:03,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:03,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:03,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:03,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:03,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:03,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:03,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:03,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:03,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:03,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:03,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:03,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:03,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:03,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 17:38:03,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:03,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 17:38:03,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:03,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:38:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:38:03,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:04,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 17:38:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:04,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:04,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:04,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:04,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 17:38:04,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:04,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 17:38:04,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:04,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:04,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:38:04,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:04,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:38:04,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:04,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 17:38:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:04,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:04,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:04,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:04,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 17:38:04,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:04,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 17:38:04,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:04,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:04,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:38:04,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:04,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:38:04,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:04,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6255 backedges. 2028 proven. 4056 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-14 17:38:04,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148009892] [2020-10-14 17:38:04,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:04,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 17:38:04,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696108292] [2020-10-14 17:38:04,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 17:38:04,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:04,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 17:38:04,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:38:04,748 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 30 states. [2020-10-14 17:38:05,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:05,614 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2020-10-14 17:38:05,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 17:38:05,614 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 188 [2020-10-14 17:38:05,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:05,615 INFO L225 Difference]: With dead ends: 148 [2020-10-14 17:38:05,615 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 17:38:05,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 17:38:05,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 17:38:05,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-14 17:38:05,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 17:38:05,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-14 17:38:05,622 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 188 [2020-10-14 17:38:05,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:05,623 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-14 17:38:05,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 17:38:05,623 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-14 17:38:05,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 17:38:05,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:05,624 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:38:05,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 17:38:05,624 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:05,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:05,625 INFO L82 PathProgramCache]: Analyzing trace with hash -198249515, now seen corresponding path program 27 times [2020-10-14 17:38:05,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:05,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022891157] [2020-10-14 17:38:05,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:05,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:05,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:05,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:05,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:10,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:10,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 17:38:10,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:10,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:38:10,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:10,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:10,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:38:10,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 17:38:10,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:38:10,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:10,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:10,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:10,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:10,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:10,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:10,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:38:10,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:10,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:10,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:10,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:10,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:10,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:10,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:10,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:10,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:10,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:10,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 17:38:10,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:10,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 17:38:10,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:10,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:10,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:38:10,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:10,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:38:10,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:11,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 17:38:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:11,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:11,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:11,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 17:38:11,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:11,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 17:38:11,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:11,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:11,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:38:11,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:11,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:38:11,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:11,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 17:38:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:11,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:11,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:11,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:11,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 17:38:11,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:11,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 17:38:11,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:11,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:11,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:38:11,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:11,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:38:11,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6738 backedges. 2187 proven. 4374 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-14 17:38:11,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022891157] [2020-10-14 17:38:11,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:11,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 17:38:11,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710420538] [2020-10-14 17:38:11,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 17:38:11,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:11,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 17:38:11,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:38:11,560 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 31 states. [2020-10-14 17:38:12,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:12,358 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-10-14 17:38:12,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 17:38:12,359 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 194 [2020-10-14 17:38:12,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:12,360 INFO L225 Difference]: With dead ends: 152 [2020-10-14 17:38:12,360 INFO L226 Difference]: Without dead ends: 82 [2020-10-14 17:38:12,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 17:38:12,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-14 17:38:12,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-14 17:38:12,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 17:38:12,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-14 17:38:12,367 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 194 [2020-10-14 17:38:12,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:12,367 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-14 17:38:12,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 17:38:12,368 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-14 17:38:12,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-14 17:38:12,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:12,369 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:38:12,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 17:38:12,370 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:12,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:12,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1724061741, now seen corresponding path program 28 times [2020-10-14 17:38:12,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:12,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230454473] [2020-10-14 17:38:12,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:12,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:12,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:12,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:12,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:17,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:17,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-14 17:38:17,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:17,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:38:17,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:17,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:38:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:38:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 17:38:17,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:17,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:17,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:17,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:17,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:17,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:17,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:17,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:17,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:17,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:17,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:17,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:17,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:17,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:17,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:17,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:17,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 17:38:17,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:17,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 17:38:17,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:17,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:38:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 17:38:17,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:17,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 17:38:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:17,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:18,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:18,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:18,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 17:38:18,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:18,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-14 17:38:18,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:18,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:38:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 17:38:18,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:18,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 17:38:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:18,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:18,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:18,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:18,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 17:38:18,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:18,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-14 17:38:18,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:18,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:18,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:38:18,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:18,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 17:38:18,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:38:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 7239 backedges. 2352 proven. 4704 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-14 17:38:18,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230454473] [2020-10-14 17:38:18,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:18,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 17:38:18,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097498276] [2020-10-14 17:38:18,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 17:38:18,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:18,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 17:38:18,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-14 17:38:18,594 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 32 states. [2020-10-14 17:38:19,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:19,551 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-10-14 17:38:19,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 17:38:19,551 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 200 [2020-10-14 17:38:19,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:19,552 INFO L225 Difference]: With dead ends: 156 [2020-10-14 17:38:19,552 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 17:38:19,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-14 17:38:19,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 17:38:19,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-14 17:38:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 17:38:19,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-14 17:38:19,560 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 200 [2020-10-14 17:38:19,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:19,560 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-14 17:38:19,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 17:38:19,560 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-14 17:38:19,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-14 17:38:19,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:19,562 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:38:19,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 17:38:19,562 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:19,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:19,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1040196945, now seen corresponding path program 29 times [2020-10-14 17:38:19,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:19,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702771243] [2020-10-14 17:38:19,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:19,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:19,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:19,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:19,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:24,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:24,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-14 17:38:24,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:24,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 17:38:24,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:24,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:24,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:38:24,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:38:24,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 17:38:24,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:24,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:24,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:24,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:24,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:24,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:24,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:24,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:24,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:24,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:24,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:24,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:24,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:24,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 17:38:24,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:24,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 17:38:24,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:24,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:24,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:38:24,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:24,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 17:38:24,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:25,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 17:38:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:25,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:25,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:25,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 17:38:25,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:25,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 17:38:25,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:25,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:25,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:38:25,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:25,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 17:38:25,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:25,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 17:38:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:25,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:25,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:25,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:25,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 17:38:25,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:25,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 17:38:25,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:25,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:38:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 17:38:25,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:25,610 INFO L134 CoverageAnalysis]: Checked inductivity of 7758 backedges. 2523 proven. 5046 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-14 17:38:25,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702771243] [2020-10-14 17:38:25,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:25,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 17:38:25,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260650950] [2020-10-14 17:38:25,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 17:38:25,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:25,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 17:38:25,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 17:38:25,612 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 33 states. [2020-10-14 17:38:26,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:26,654 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2020-10-14 17:38:26,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 17:38:26,654 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 206 [2020-10-14 17:38:26,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:26,655 INFO L225 Difference]: With dead ends: 160 [2020-10-14 17:38:26,655 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 17:38:26,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 17:38:26,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 17:38:26,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-14 17:38:26,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 17:38:26,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-14 17:38:26,662 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 206 [2020-10-14 17:38:26,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:26,663 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-14 17:38:26,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 17:38:26,663 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-14 17:38:26,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 17:38:26,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:26,664 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:38:26,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 17:38:26,664 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:26,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:26,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1622995889, now seen corresponding path program 30 times [2020-10-14 17:38:26,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:26,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095335574] [2020-10-14 17:38:26,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:26,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:26,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:26,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:26,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:31,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:31,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 17:38:31,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:31,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:38:31,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:31,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:31,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:38:31,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:38:31,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 17:38:31,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:31,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:31,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:31,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:31,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:31,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:31,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:31,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:31,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:31,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:31,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:31,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:31,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:31,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 17:38:31,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:31,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 17:38:31,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:31,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:31,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:38:31,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:31,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 17:38:31,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:32,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 17:38:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:32,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:32,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:32,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:32,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 17:38:32,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:32,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 17:38:32,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:32,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:38:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:32,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 17:38:32,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:32,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-14 17:38:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:32,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:32,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:32,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:32,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 17:38:32,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:32,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 17:38:32,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:32,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:32,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:38:32,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:32,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 17:38:32,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:32,743 INFO L134 CoverageAnalysis]: Checked inductivity of 8295 backedges. 2700 proven. 5400 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-14 17:38:32,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095335574] [2020-10-14 17:38:32,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:32,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 17:38:32,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204941911] [2020-10-14 17:38:32,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 17:38:32,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:32,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 17:38:32,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 17:38:32,745 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 34 states. [2020-10-14 17:38:33,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:33,827 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-10-14 17:38:33,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 17:38:33,828 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 212 [2020-10-14 17:38:33,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:33,829 INFO L225 Difference]: With dead ends: 164 [2020-10-14 17:38:33,829 INFO L226 Difference]: Without dead ends: 88 [2020-10-14 17:38:33,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-14 17:38:33,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-14 17:38:33,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-14 17:38:33,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 17:38:33,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-14 17:38:33,836 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 212 [2020-10-14 17:38:33,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:33,836 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-14 17:38:33,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 17:38:33,836 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-14 17:38:33,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-14 17:38:33,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:33,837 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:38:33,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 17:38:33,838 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:33,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:33,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1692925133, now seen corresponding path program 31 times [2020-10-14 17:38:33,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:33,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279367134] [2020-10-14 17:38:33,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:33,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:33,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:33,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:33,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:38,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:38,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 17:38:38,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:38,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:38:38,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:38,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:38,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 17:38:38,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:38:38,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 17:38:38,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:38,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:38,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:38,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:38,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:38,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:38,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:38,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:38,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:38,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:38,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:38,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:38,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:38,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:38,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:39,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:39,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 17:38:39,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:39,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-14 17:38:39,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:39,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:39,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 17:38:39,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:39,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 17:38:39,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:38:39,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 17:38:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:39,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:39,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:40,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:40,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 17:38:40,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:40,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-14 17:38:40,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:40,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:40,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 17:38:40,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:40,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 17:38:40,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:40,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-14 17:38:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:40,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:40,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:40,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:40,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 17:38:40,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:40,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-14 17:38:40,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:40,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 17:38:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 17:38:40,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2883 proven. 5766 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-14 17:38:40,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279367134] [2020-10-14 17:38:40,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:40,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 17:38:40,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098870621] [2020-10-14 17:38:40,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 17:38:40,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:40,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 17:38:40,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 17:38:40,375 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 35 states. [2020-10-14 17:38:41,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:41,414 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-14 17:38:41,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 17:38:41,415 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 218 [2020-10-14 17:38:41,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:41,416 INFO L225 Difference]: With dead ends: 168 [2020-10-14 17:38:41,416 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 17:38:41,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2020-10-14 17:38:41,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 17:38:41,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-14 17:38:41,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 17:38:41,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-14 17:38:41,423 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 218 [2020-10-14 17:38:41,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:41,424 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-14 17:38:41,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 17:38:41,424 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-14 17:38:41,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-14 17:38:41,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:41,425 INFO L422 BasicCegarLoop]: trace histogram [96, 96, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:38:41,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 17:38:41,426 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:41,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:41,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1209444661, now seen corresponding path program 32 times [2020-10-14 17:38:41,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:41,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836820359] [2020-10-14 17:38:41,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:41,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:41,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:41,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:41,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:46,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:46,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-14 17:38:46,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:46,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 17:38:46,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:46,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 17:38:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:38:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:38:46,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:46,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:46,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:46,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:46,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:46,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:46,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:46,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:46,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:46,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:46,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:46,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:46,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:46,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 17:38:46,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:46,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 17:38:46,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:46,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:46,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 17:38:46,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:46,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:38:46,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:47,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 17:38:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:47,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:47,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:47,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:47,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 17:38:47,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:47,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 17:38:47,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:47,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:47,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 17:38:47,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:47,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:38:47,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:47,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 17:38:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:47,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:47,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:47,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:47,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 17:38:47,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:47,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 17:38:47,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:47,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:47,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 17:38:47,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:47,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:38:47,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:47,668 INFO L134 CoverageAnalysis]: Checked inductivity of 9423 backedges. 3072 proven. 6144 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-14 17:38:47,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836820359] [2020-10-14 17:38:47,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:47,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 17:38:47,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707032207] [2020-10-14 17:38:47,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 17:38:47,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:47,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 17:38:47,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 17:38:47,670 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 36 states. [2020-10-14 17:38:48,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:48,792 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2020-10-14 17:38:48,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 17:38:48,792 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 224 [2020-10-14 17:38:48,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:48,794 INFO L225 Difference]: With dead ends: 172 [2020-10-14 17:38:48,794 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 17:38:48,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2020-10-14 17:38:48,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 17:38:48,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-14 17:38:48,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 17:38:48,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-14 17:38:48,800 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 224 [2020-10-14 17:38:48,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:48,800 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-14 17:38:48,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 17:38:48,800 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-14 17:38:48,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-14 17:38:48,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:48,802 INFO L422 BasicCegarLoop]: trace histogram [99, 99, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:38:48,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 17:38:48,802 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:48,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:48,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1482259017, now seen corresponding path program 33 times [2020-10-14 17:38:48,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:48,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675222592] [2020-10-14 17:38:48,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:48,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:48,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:48,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:48,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:53,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:53,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 17:38:53,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:53,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:38:53,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:53,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:53,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 17:38:53,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 17:38:53,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 17:38:53,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:53,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:53,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:53,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:53,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:53,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:53,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:53,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:53,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:53,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:53,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:53,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:53,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:53,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:53,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:53,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:54,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:54,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 17:38:54,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:54,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-14 17:38:54,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:54,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:54,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 17:38:54,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:54,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 17:38:54,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:54,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 17:38:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:54,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:54,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:54,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 17:38:54,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:54,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 17:38:54,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:54,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 17:38:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 17:38:54,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:54,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 17:38:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:54,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:55,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:55,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:55,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 17:38:55,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:55,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 17:38:55,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:55,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:55,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 17:38:55,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:55,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 17:38:55,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:55,202 INFO L134 CoverageAnalysis]: Checked inductivity of 10014 backedges. 3267 proven. 6534 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-14 17:38:55,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675222592] [2020-10-14 17:38:55,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:55,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 17:38:55,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934202825] [2020-10-14 17:38:55,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 17:38:55,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:55,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 17:38:55,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 17:38:55,210 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 37 states. [2020-10-14 17:38:56,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:56,392 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2020-10-14 17:38:56,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 17:38:56,393 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 230 [2020-10-14 17:38:56,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:56,394 INFO L225 Difference]: With dead ends: 176 [2020-10-14 17:38:56,395 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 17:38:56,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2020-10-14 17:38:56,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 17:38:56,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-14 17:38:56,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 17:38:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-14 17:38:56,400 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 230 [2020-10-14 17:38:56,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:56,401 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-14 17:38:56,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 17:38:56,401 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-14 17:38:56,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-14 17:38:56,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:56,403 INFO L422 BasicCegarLoop]: trace histogram [102, 102, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:38:56,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 17:38:56,403 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:56,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:56,403 INFO L82 PathProgramCache]: Analyzing trace with hash 862111559, now seen corresponding path program 34 times [2020-10-14 17:38:56,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:56,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978983718] [2020-10-14 17:38:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:56,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:56,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:56,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:56,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:01,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:01,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 17:39:01,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:39:01,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 17:39:01,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:01,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:01,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 17:39:01,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 17:39:01,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 17:39:01,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:01,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:01,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:01,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:01,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:01,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:01,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:39:01,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:01,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:01,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:01,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:01,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:01,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:01,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:39:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:01,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:01,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:01,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:01,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 17:39:01,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:01,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-14 17:39:01,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:01,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:01,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 17:39:01,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:01,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 17:39:01,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:02,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 17:39:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:02,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:02,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:02,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 17:39:02,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:02,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 17:39:02,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:02,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:02,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 17:39:02,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:02,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 17:39:02,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:02,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-14 17:39:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:02,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:02,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:02,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:02,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 17:39:02,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:02,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 17:39:02,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:02,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:02,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 17:39:02,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:02,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 17:39:02,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:02,797 INFO L134 CoverageAnalysis]: Checked inductivity of 10623 backedges. 3468 proven. 6936 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-14 17:39:02,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978983718] [2020-10-14 17:39:02,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:02,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 17:39:02,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501237787] [2020-10-14 17:39:02,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 17:39:02,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:02,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 17:39:02,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 17:39:02,799 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 38 states. [2020-10-14 17:39:04,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:04,104 INFO L93 Difference]: Finished difference Result 180 states and 190 transitions. [2020-10-14 17:39:04,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 17:39:04,105 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 236 [2020-10-14 17:39:04,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:04,106 INFO L225 Difference]: With dead ends: 180 [2020-10-14 17:39:04,106 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 17:39:04,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2020-10-14 17:39:04,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 17:39:04,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-14 17:39:04,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 17:39:04,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-14 17:39:04,114 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 236 [2020-10-14 17:39:04,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:04,114 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-14 17:39:04,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 17:39:04,114 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-14 17:39:04,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 17:39:04,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:04,116 INFO L422 BasicCegarLoop]: trace histogram [105, 105, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:04,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 17:39:04,116 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:04,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:04,116 INFO L82 PathProgramCache]: Analyzing trace with hash 2034736581, now seen corresponding path program 35 times [2020-10-14 17:39:04,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:04,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472734199] [2020-10-14 17:39:04,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:04,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:04,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:04,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:04,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:09,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:09,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-14 17:39:09,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:39:09,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:39:09,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:09,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:09,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 17:39:09,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 17:39:09,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 17:39:09,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:09,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:09,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:09,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:09,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:09,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:09,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:39:09,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:09,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:09,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:09,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:09,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:09,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:09,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:39:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:09,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:09,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:09,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:09,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 17:39:09,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:09,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-14 17:39:09,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:09,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:09,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 17:39:09,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:09,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 17:39:09,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:10,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 17:39:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:10,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:10,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:10,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 17:39:10,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:10,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 17:39:10,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:10,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:10,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 17:39:10,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:10,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 17:39:10,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:10,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-14 17:39:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:10,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:10,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:10,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:10,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 17:39:10,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:10,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 17:39:10,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:10,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:10,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 17:39:10,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:10,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 17:39:10,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 11250 backedges. 3675 proven. 7350 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-14 17:39:10,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472734199] [2020-10-14 17:39:10,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:10,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-14 17:39:10,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355742871] [2020-10-14 17:39:10,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-14 17:39:10,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:10,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-14 17:39:10,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 17:39:10,570 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 39 states. [2020-10-14 17:39:11,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:11,878 INFO L93 Difference]: Finished difference Result 184 states and 194 transitions. [2020-10-14 17:39:11,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 17:39:11,879 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 242 [2020-10-14 17:39:11,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:11,880 INFO L225 Difference]: With dead ends: 184 [2020-10-14 17:39:11,880 INFO L226 Difference]: Without dead ends: 98 [2020-10-14 17:39:11,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2020-10-14 17:39:11,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-14 17:39:11,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-14 17:39:11,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 17:39:11,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-14 17:39:11,886 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 242 [2020-10-14 17:39:11,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:11,886 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-14 17:39:11,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-14 17:39:11,886 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-14 17:39:11,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-14 17:39:11,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:11,887 INFO L422 BasicCegarLoop]: trace histogram [108, 108, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:11,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 17:39:11,887 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:11,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:11,888 INFO L82 PathProgramCache]: Analyzing trace with hash 862084547, now seen corresponding path program 36 times [2020-10-14 17:39:11,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:11,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484149461] [2020-10-14 17:39:11,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:11,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:11,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:11,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:11,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:16,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:16,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 17:39:16,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:39:16,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:39:16,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:16,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 17:39:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 17:39:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 17:39:16,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:16,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:16,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:16,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:16,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:16,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:16,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:39:16,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:16,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:16,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:16,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:16,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:16,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:39:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:16,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:16,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:17,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:17,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 17:39:17,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:17,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-14 17:39:17,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:17,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:17,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 17:39:17,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:17,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 17:39:17,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:17,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 17:39:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:17,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:18,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:18,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 17:39:18,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:18,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 17:39:18,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:18,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:18,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 17:39:18,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:18,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 17:39:18,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:18,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-14 17:39:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:18,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:18,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:18,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:18,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 17:39:18,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:18,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-14 17:39:18,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:18,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:18,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 17:39:18,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:18,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 17:39:18,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 11895 backedges. 3888 proven. 7776 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-14 17:39:18,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484149461] [2020-10-14 17:39:18,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:18,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 17:39:18,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58559695] [2020-10-14 17:39:18,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 17:39:18,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:18,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 17:39:18,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 17:39:18,418 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 40 states. [2020-10-14 17:39:19,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:19,866 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-10-14 17:39:19,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-14 17:39:19,867 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 248 [2020-10-14 17:39:19,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:19,868 INFO L225 Difference]: With dead ends: 188 [2020-10-14 17:39:19,868 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 17:39:19,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2020-10-14 17:39:19,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 17:39:19,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-14 17:39:19,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 17:39:19,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-14 17:39:19,881 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 248 [2020-10-14 17:39:19,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:19,881 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-14 17:39:19,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-14 17:39:19,881 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-14 17:39:19,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-14 17:39:19,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:19,883 INFO L422 BasicCegarLoop]: trace histogram [111, 111, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:19,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 17:39:19,883 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:19,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:19,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1512400705, now seen corresponding path program 37 times [2020-10-14 17:39:19,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:19,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823759653] [2020-10-14 17:39:19,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:19,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:19,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:20,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:20,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:24,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:24,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-14 17:39:24,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:39:24,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 17:39:24,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:24,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:24,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 17:39:24,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 17:39:24,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 17:39:24,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:24,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:24,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:24,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:24,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:24,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:24,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:39:24,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:24,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:24,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:24,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:24,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:24,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:24,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:39:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:24,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:24,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:25,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:25,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 17:39:25,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:25,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 17:39:25,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:25,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:25,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 17:39:25,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:25,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 17:39:25,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:26,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 17:39:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:26,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:26,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:26,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 17:39:26,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:26,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-14 17:39:26,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:26,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:26,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 17:39:26,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:26,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 17:39:26,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:26,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-14 17:39:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:26,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:26,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:26,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:26,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 17:39:26,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:26,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-14 17:39:26,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:26,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:26,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 17:39:26,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:26,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 17:39:26,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 12558 backedges. 4107 proven. 8214 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2020-10-14 17:39:26,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823759653] [2020-10-14 17:39:26,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:26,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-14 17:39:26,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348048967] [2020-10-14 17:39:26,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-14 17:39:26,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:26,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-14 17:39:26,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 17:39:26,496 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 41 states. [2020-10-14 17:39:27,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:27,939 INFO L93 Difference]: Finished difference Result 192 states and 202 transitions. [2020-10-14 17:39:27,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 17:39:27,940 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 254 [2020-10-14 17:39:27,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:27,942 INFO L225 Difference]: With dead ends: 192 [2020-10-14 17:39:27,942 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 17:39:27,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2020-10-14 17:39:27,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 17:39:27,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-14 17:39:27,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 17:39:27,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-14 17:39:27,952 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 254 [2020-10-14 17:39:27,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:27,953 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-14 17:39:27,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-14 17:39:27,953 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-14 17:39:27,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 17:39:27,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:27,956 INFO L422 BasicCegarLoop]: trace histogram [114, 114, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:27,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 17:39:27,957 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:27,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:27,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1796938303, now seen corresponding path program 38 times [2020-10-14 17:39:27,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:27,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304155829] [2020-10-14 17:39:27,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:27,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:27,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:28,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:28,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking...