/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/standard_copyInitSum3_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:34:30,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:34:30,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:34:30,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:34:30,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:34:30,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:34:30,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:34:30,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:34:30,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:34:30,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:34:30,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:34:30,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:34:30,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:34:30,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:34:30,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:34:30,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:34:30,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:34:30,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:34:30,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:34:30,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:34:30,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:34:30,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:34:30,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:34:30,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:34:30,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:34:30,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:34:30,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:34:30,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:34:30,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:34:30,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:34:30,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:34:30,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:34:30,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:34:30,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:34:30,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:34:30,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:34:30,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:34:30,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:34:30,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:34:30,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:34:30,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:34:30,528 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 [2020-10-13 23:34:30,551 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:34:30,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:34:30,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:34:30,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:34:30,554 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:34:30,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:34:30,554 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:34:30,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:34:30,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:34:30,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:34:30,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:34:30,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:34:30,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:34:30,555 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:34:30,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:34:30,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:34:30,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:34:30,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:34:30,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:34:30,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:34:30,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:34:30,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:34:30,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:34:30,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:34:30,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:34:30,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:34:30,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:34:30,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:34:30,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:34:30,558 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-13 23:34:30,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:34:30,898 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:34:30,902 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:34:30,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:34:30,904 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:34:30,905 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copyInitSum3_ground.i [2020-10-13 23:34:30,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33f792358/bb176f875adc4aeead8451f4d3de3351/FLAG42e6a9f09 [2020-10-13 23:34:31,412 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:34:31,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copyInitSum3_ground.i [2020-10-13 23:34:31,419 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33f792358/bb176f875adc4aeead8451f4d3de3351/FLAG42e6a9f09 [2020-10-13 23:34:31,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33f792358/bb176f875adc4aeead8451f4d3de3351 [2020-10-13 23:34:31,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:34:31,804 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:34:31,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:34:31,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:34:31,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:34:31,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:34:31" (1/1) ... [2020-10-13 23:34:31,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@780fc4fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:31, skipping insertion in model container [2020-10-13 23:34:31,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:34:31" (1/1) ... [2020-10-13 23:34:31,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:34:31,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:34:32,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:34:32,052 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:34:32,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:34:32,097 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:34:32,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:32 WrapperNode [2020-10-13 23:34:32,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:34:32,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:34:32,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:34:32,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:34:32,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:32" (1/1) ... [2020-10-13 23:34:32,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:32" (1/1) ... [2020-10-13 23:34:32,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:32" (1/1) ... [2020-10-13 23:34:32,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:32" (1/1) ... [2020-10-13 23:34:32,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:32" (1/1) ... [2020-10-13 23:34:32,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:32" (1/1) ... [2020-10-13 23:34:32,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:32" (1/1) ... [2020-10-13 23:34:32,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:34:32,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:34:32,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:34:32,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:34:32,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:32" (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 [2020-10-13 23:34:32,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:34:32,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:34:32,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:34:32,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:34:32,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:34:32,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:34:32,291 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:34:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:34:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:34:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:34:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:34:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:34:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:34:32,551 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:34:32,552 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-13 23:34:32,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:34:32 BoogieIcfgContainer [2020-10-13 23:34:32,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:34:32,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:34:32,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:34:32,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:34:32,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:34:31" (1/3) ... [2020-10-13 23:34:32,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e317553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:34:32, skipping insertion in model container [2020-10-13 23:34:32,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:34:32" (2/3) ... [2020-10-13 23:34:32,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e317553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:34:32, skipping insertion in model container [2020-10-13 23:34:32,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:34:32" (3/3) ... [2020-10-13 23:34:32,567 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copyInitSum3_ground.i [2020-10-13 23:34:32,581 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:34:32,590 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:34:32,631 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:34:32,658 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:34:32,659 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:34:32,659 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:34:32,659 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:34:32,659 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:34:32,666 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:34:32,666 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:34:32,666 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:34:32,688 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-13 23:34:32,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 23:34:32,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:32,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:32,700 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:32,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:32,705 INFO L82 PathProgramCache]: Analyzing trace with hash 656367922, now seen corresponding path program 1 times [2020-10-13 23:34:32,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:32,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968605968] [2020-10-13 23:34:32,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:32,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:32,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:32,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:32,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:33,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:33,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 23:34:33,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:34:33,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-10-13 23:34:33,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:33,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:34:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:33,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:34:33,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:34:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:33,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:33,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:33,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:34:33,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:34:33,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 23:34:33,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:33,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:33,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:33,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:34:33,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:33,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:34:33,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968605968] [2020-10-13 23:34:33,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:34:33,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:34:33,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067613914] [2020-10-13 23:34:33,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:34:33,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:34:33,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:34:33,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:34:33,548 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-10-13 23:34:33,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:34:33,658 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2020-10-13 23:34:33,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:34:33,663 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-13 23:34:33,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:34:33,675 INFO L225 Difference]: With dead ends: 57 [2020-10-13 23:34:33,675 INFO L226 Difference]: Without dead ends: 27 [2020-10-13 23:34:33,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:34:33,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-13 23:34:33,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-13 23:34:33,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 23:34:33,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 23:34:33,721 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 19 [2020-10-13 23:34:33,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:34:33,722 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 23:34:33,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:34:33,722 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 23:34:33,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 23:34:33,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:33,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:33,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:34:33,725 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:33,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:33,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1829979950, now seen corresponding path program 1 times [2020-10-13 23:34:33,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:33,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199286488] [2020-10-13 23:34:33,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:33,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:33,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:33,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:34,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:34,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 23:34:34,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:34:34,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-13 23:34:34,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:34,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:34:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:34:34,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:34:34,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 23:34:34,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:34:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:34,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:34,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:34,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:34:34,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:34:34,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:34:34,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:34,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:34,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:34,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:34:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:34,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:34:34,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:34:34,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199286488] [2020-10-13 23:34:34,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:34:34,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:34:34,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040850151] [2020-10-13 23:34:34,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:34:34,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:34:34,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:34:34,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:34:34,150 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-13 23:34:34,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:34:34,291 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2020-10-13 23:34:34,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:34:34,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-13 23:34:34,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:34:34,294 INFO L225 Difference]: With dead ends: 54 [2020-10-13 23:34:34,294 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 23:34:34,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:34:34,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 23:34:34,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2020-10-13 23:34:34,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 23:34:34,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 23:34:34,312 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2020-10-13 23:34:34,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:34:34,313 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 23:34:34,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:34:34,313 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 23:34:34,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 23:34:34,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:34,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:34,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:34:34,317 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:34,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:34,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1442018896, now seen corresponding path program 1 times [2020-10-13 23:34:34,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:34,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127790565] [2020-10-13 23:34:34,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:34,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:34,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:34,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:35,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:35,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:38,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:38,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:34:38,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:34:38,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3806 [2020-10-13 23:34:38,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:38,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:38,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:34:38,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 23:34:38,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:34:38,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:38,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:34:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:38,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:38,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:38,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:34:38,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:34:38,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 23:34:38,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:38,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:38,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:34:38,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:38,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:34:38,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 23:34:38,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127790565] [2020-10-13 23:34:38,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:34:38,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:34:38,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858444279] [2020-10-13 23:34:38,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:34:38,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:34:38,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:34:38,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:34:38,218 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-13 23:34:38,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:34:38,430 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2020-10-13 23:34:38,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:34:38,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-13 23:34:38,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:34:38,435 INFO L225 Difference]: With dead ends: 64 [2020-10-13 23:34:38,435 INFO L226 Difference]: Without dead ends: 41 [2020-10-13 23:34:38,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:34:38,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-13 23:34:38,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-10-13 23:34:38,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-13 23:34:38,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-13 23:34:38,455 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 26 [2020-10-13 23:34:38,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:34:38,455 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-13 23:34:38,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:34:38,456 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-13 23:34:38,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 23:34:38,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:38,461 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:38,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:34:38,462 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:38,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:38,462 INFO L82 PathProgramCache]: Analyzing trace with hash 261695650, now seen corresponding path program 2 times [2020-10-13 23:34:38,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:38,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725807283] [2020-10-13 23:34:38,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:38,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:38,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:38,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:38,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:43,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:43,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:43,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 23:34:43,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:34:43,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 23:34:43,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:43,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:43,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:34:43,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:34:43,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:34:43,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:43,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:34:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:43,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:43,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:43,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:34:43,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:34:43,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:34:43,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:43,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:43,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:43,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:34:43,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:43,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:43,546 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 23:34:43,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725807283] [2020-10-13 23:34:43,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:34:43,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:34:43,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012798859] [2020-10-13 23:34:43,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:34:43,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:34:43,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:34:43,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:34:43,549 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 6 states. [2020-10-13 23:34:43,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:34:43,678 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2020-10-13 23:34:43,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:34:43,679 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-13 23:34:43,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:34:43,680 INFO L225 Difference]: With dead ends: 77 [2020-10-13 23:34:43,680 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 23:34:43,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:34:43,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 23:34:43,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-10-13 23:34:43,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 23:34:43,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-13 23:34:43,689 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 33 [2020-10-13 23:34:43,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:34:43,690 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-13 23:34:43,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:34:43,690 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-13 23:34:43,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 23:34:43,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:43,692 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-13 23:34:43,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:34:43,692 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:43,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:43,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1563249348, now seen corresponding path program 3 times [2020-10-13 23:34:43,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:43,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664183664] [2020-10-13 23:34:43,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:43,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:43,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:43,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:43,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:48,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:48,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 23:34:48,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:34:48,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:34:48,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:48,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:48,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:34:48,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 23:34:48,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:34:48,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:48,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:34:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:48,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:48,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:48,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:34:48,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:34:48,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:34:48,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:48,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:48,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:48,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:34:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:48,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:48,770 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 23:34:48,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664183664] [2020-10-13 23:34:48,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:34:48,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:34:48,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275372271] [2020-10-13 23:34:48,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:34:48,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:34:48,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:34:48,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:34:48,774 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-13 23:34:48,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:34:48,939 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2020-10-13 23:34:48,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:34:48,939 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-10-13 23:34:48,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:34:48,940 INFO L225 Difference]: With dead ends: 90 [2020-10-13 23:34:48,940 INFO L226 Difference]: Without dead ends: 55 [2020-10-13 23:34:48,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:34:48,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-13 23:34:48,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2020-10-13 23:34:48,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-13 23:34:48,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-13 23:34:48,958 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 40 [2020-10-13 23:34:48,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:34:48,959 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-13 23:34:48,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:34:48,964 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-13 23:34:48,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 23:34:48,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:48,966 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:48,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:34:48,967 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:48,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:48,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1161905130, now seen corresponding path program 4 times [2020-10-13 23:34:48,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:48,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121536745] [2020-10-13 23:34:48,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:49,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:49,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:49,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:50,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:53,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:53,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 23:34:53,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:34:53,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:34:53,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:54,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:54,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:34:54,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:34:54,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:34:54,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:54,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:34:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:54,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:54,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:54,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:34:54,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:34:54,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:34:54,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:54,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:54,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:54,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:34:54,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:54,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:34:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-13 23:34:54,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121536745] [2020-10-13 23:34:54,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:34:54,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:34:54,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575248103] [2020-10-13 23:34:54,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:34:54,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:34:54,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:34:54,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:34:54,087 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 8 states. [2020-10-13 23:34:54,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:34:54,263 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2020-10-13 23:34:54,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:34:54,264 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-10-13 23:34:54,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:34:54,266 INFO L225 Difference]: With dead ends: 103 [2020-10-13 23:34:54,266 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 23:34:54,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:34:54,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 23:34:54,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2020-10-13 23:34:54,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 23:34:54,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-13 23:34:54,275 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 47 [2020-10-13 23:34:54,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:34:54,275 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-13 23:34:54,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:34:54,275 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-13 23:34:54,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 23:34:54,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:54,277 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:54,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:34:54,277 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:54,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:54,278 INFO L82 PathProgramCache]: Analyzing trace with hash 104059192, now seen corresponding path program 5 times [2020-10-13 23:34:54,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:54,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477283885] [2020-10-13 23:34:54,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:54,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:54,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:54,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:55,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:59,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:59,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 23:34:59,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:34:59,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 23:34:59,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:59,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:59,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:34:59,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 23:34:59,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:34:59,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:59,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:34:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:59,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:59,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:34:59,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:34:59,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:34:59,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:34:59,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:34:59,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:34:59,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:34:59,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:34:59,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:34:59,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:34:59,416 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-13 23:34:59,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477283885] [2020-10-13 23:34:59,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:34:59,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:34:59,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318787761] [2020-10-13 23:34:59,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:34:59,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:34:59,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:34:59,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:34:59,420 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 9 states. [2020-10-13 23:34:59,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:34:59,616 INFO L93 Difference]: Finished difference Result 116 states and 127 transitions. [2020-10-13 23:34:59,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:34:59,616 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-10-13 23:34:59,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:34:59,617 INFO L225 Difference]: With dead ends: 116 [2020-10-13 23:34:59,618 INFO L226 Difference]: Without dead ends: 69 [2020-10-13 23:34:59,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:34:59,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-13 23:34:59,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2020-10-13 23:34:59,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-13 23:34:59,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-10-13 23:34:59,632 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 54 [2020-10-13 23:34:59,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:34:59,633 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-10-13 23:34:59,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:34:59,633 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-10-13 23:34:59,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 23:34:59,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:34:59,636 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:34:59,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:34:59,636 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:34:59,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:34:59,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1385759114, now seen corresponding path program 6 times [2020-10-13 23:34:59,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:34:59,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384145078] [2020-10-13 23:34:59,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:34:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:34:59,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:59,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:34:59,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:02,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:04,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:04,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 23:35:04,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:35:04,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:35:04,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:04,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:35:04,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:35:04,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:35:04,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:35:04,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:04,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:04,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:04,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:04,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:04,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:35:04,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:04,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:04,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:35:04,756 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-13 23:35:04,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384145078] [2020-10-13 23:35:04,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:04,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:35:04,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617229051] [2020-10-13 23:35:04,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:35:04,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:04,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:35:04,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:35:04,759 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 10 states. [2020-10-13 23:35:04,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:04,924 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2020-10-13 23:35:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:35:04,924 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2020-10-13 23:35:04,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:04,925 INFO L225 Difference]: With dead ends: 129 [2020-10-13 23:35:04,925 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 23:35:04,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:35:04,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 23:35:04,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2020-10-13 23:35:04,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 23:35:04,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-13 23:35:04,933 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 61 [2020-10-13 23:35:04,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:04,933 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-13 23:35:04,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:35:04,934 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-13 23:35:04,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 23:35:04,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:04,935 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:04,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:35:04,935 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:04,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:04,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1895565740, now seen corresponding path program 7 times [2020-10-13 23:35:04,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:04,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763606958] [2020-10-13 23:35:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:04,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:04,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:04,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:07,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:09,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:09,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 23:35:09,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:35:09,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 23:35:09,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:09,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:35:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 23:35:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:35:09,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:10,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:10,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:10,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:10,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:10,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:10,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:35:10,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:10,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:10,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:10,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:35:10,078 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-13 23:35:10,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763606958] [2020-10-13 23:35:10,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:10,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:35:10,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116795966] [2020-10-13 23:35:10,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:35:10,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:10,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:35:10,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:35:10,087 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 11 states. [2020-10-13 23:35:10,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:10,250 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2020-10-13 23:35:10,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:35:10,250 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-13 23:35:10,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:10,253 INFO L225 Difference]: With dead ends: 142 [2020-10-13 23:35:10,253 INFO L226 Difference]: Without dead ends: 83 [2020-10-13 23:35:10,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:35:10,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-13 23:35:10,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-10-13 23:35:10,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-13 23:35:10,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-10-13 23:35:10,266 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 68 [2020-10-13 23:35:10,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:10,266 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-10-13 23:35:10,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:35:10,266 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-10-13 23:35:10,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 23:35:10,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:10,273 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:10,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:35:10,274 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:10,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:10,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1749223170, now seen corresponding path program 8 times [2020-10-13 23:35:10,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:10,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885592438] [2020-10-13 23:35:10,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:10,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:10,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:10,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:13,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:15,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:15,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 23:35:15,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:35:15,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 23:35:15,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:15,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:15,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:35:15,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 23:35:15,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:35:15,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:15,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:15,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:15,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:15,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:15,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:15,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:35:15,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:15,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:15,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:15,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:15,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:15,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:15,432 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-10-13 23:35:15,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885592438] [2020-10-13 23:35:15,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:15,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:35:15,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4288188] [2020-10-13 23:35:15,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:35:15,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:15,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:35:15,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:35:15,434 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 12 states. [2020-10-13 23:35:15,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:15,598 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2020-10-13 23:35:15,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:35:15,599 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 75 [2020-10-13 23:35:15,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:15,600 INFO L225 Difference]: With dead ends: 155 [2020-10-13 23:35:15,600 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 23:35:15,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:35:15,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 23:35:15,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2020-10-13 23:35:15,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 23:35:15,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-13 23:35:15,615 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 75 [2020-10-13 23:35:15,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:15,616 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-13 23:35:15,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:35:15,616 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-13 23:35:15,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 23:35:15,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:15,617 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:15,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:35:15,618 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:15,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:15,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1643836448, now seen corresponding path program 9 times [2020-10-13 23:35:15,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:15,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377105922] [2020-10-13 23:35:15,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:15,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:15,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:15,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:20,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:20,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 23:35:20,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:35:20,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:35:20,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:20,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:20,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:35:20,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 23:35:20,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:35:20,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:20,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:20,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:20,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:20,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:20,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:20,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:35:20,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:20,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:20,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:20,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:20,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:20,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:20,752 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-13 23:35:20,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377105922] [2020-10-13 23:35:20,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:20,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:35:20,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91818242] [2020-10-13 23:35:20,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:35:20,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:20,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:35:20,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:35:20,756 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 13 states. [2020-10-13 23:35:20,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:20,985 INFO L93 Difference]: Finished difference Result 168 states and 179 transitions. [2020-10-13 23:35:20,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:35:20,985 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 82 [2020-10-13 23:35:20,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:20,986 INFO L225 Difference]: With dead ends: 168 [2020-10-13 23:35:20,986 INFO L226 Difference]: Without dead ends: 97 [2020-10-13 23:35:20,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:35:20,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-13 23:35:20,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2020-10-13 23:35:20,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-13 23:35:21,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2020-10-13 23:35:21,006 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 82 [2020-10-13 23:35:21,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:21,006 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2020-10-13 23:35:21,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:35:21,006 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2020-10-13 23:35:21,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 23:35:21,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:21,007 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:21,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:35:21,008 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:21,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:21,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1732223602, now seen corresponding path program 10 times [2020-10-13 23:35:21,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:21,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092733265] [2020-10-13 23:35:21,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:21,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:21,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:21,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:26,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:26,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 23:35:26,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:35:26,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:35:26,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:26,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:26,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:35:26,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 23:35:26,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:35:26,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:26,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:26,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:26,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:26,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:26,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:26,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:35:26,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:26,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:26,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:26,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:35:26,198 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2020-10-13 23:35:26,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092733265] [2020-10-13 23:35:26,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:26,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:35:26,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547330105] [2020-10-13 23:35:26,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:35:26,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:26,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:35:26,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:35:26,202 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand 14 states. [2020-10-13 23:35:26,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:26,496 INFO L93 Difference]: Finished difference Result 181 states and 192 transitions. [2020-10-13 23:35:26,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:35:26,497 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2020-10-13 23:35:26,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:26,498 INFO L225 Difference]: With dead ends: 181 [2020-10-13 23:35:26,498 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 23:35:26,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:35:26,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 23:35:26,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2020-10-13 23:35:26,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 23:35:26,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-13 23:35:26,515 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 89 [2020-10-13 23:35:26,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:26,516 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-13 23:35:26,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:35:26,516 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-13 23:35:26,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 23:35:26,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:26,518 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:26,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:35:26,519 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:26,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:26,520 INFO L82 PathProgramCache]: Analyzing trace with hash -2111467372, now seen corresponding path program 11 times [2020-10-13 23:35:26,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:26,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600942727] [2020-10-13 23:35:26,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:26,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:26,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:26,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:31,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:31,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 23:35:31,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:35:31,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:35:31,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:31,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:31,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:35:31,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 23:35:31,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:35:31,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:31,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:31,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:31,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:31,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:31,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:31,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:35:31,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:31,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:31,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:31,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2020-10-13 23:35:31,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600942727] [2020-10-13 23:35:31,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:31,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:35:31,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646959755] [2020-10-13 23:35:31,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:35:31,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:31,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:35:31,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:35:31,689 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 15 states. [2020-10-13 23:35:31,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:31,915 INFO L93 Difference]: Finished difference Result 194 states and 205 transitions. [2020-10-13 23:35:31,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:35:31,916 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 96 [2020-10-13 23:35:31,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:31,917 INFO L225 Difference]: With dead ends: 194 [2020-10-13 23:35:31,917 INFO L226 Difference]: Without dead ends: 111 [2020-10-13 23:35:31,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:35:31,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-13 23:35:31,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 108. [2020-10-13 23:35:31,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-13 23:35:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2020-10-13 23:35:31,931 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 96 [2020-10-13 23:35:31,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:31,933 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 112 transitions. [2020-10-13 23:35:31,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:35:31,934 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 112 transitions. [2020-10-13 23:35:31,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 23:35:31,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:31,935 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:31,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:35:31,935 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:31,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:31,935 INFO L82 PathProgramCache]: Analyzing trace with hash -88736282, now seen corresponding path program 12 times [2020-10-13 23:35:31,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:31,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080309295] [2020-10-13 23:35:31,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:31,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:31,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:32,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:36,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:36,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 23:35:36,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:35:36,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 23:35:36,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:36,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:36,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:35:36,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-13 23:35:36,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:35:36,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:37,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:37,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:37,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:37,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:37,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:37,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:35:37,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:37,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:37,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:37,138 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2020-10-13 23:35:37,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080309295] [2020-10-13 23:35:37,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:37,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:35:37,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279413946] [2020-10-13 23:35:37,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:35:37,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:37,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:35:37,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:35:37,140 INFO L87 Difference]: Start difference. First operand 108 states and 112 transitions. Second operand 16 states. [2020-10-13 23:35:37,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:37,423 INFO L93 Difference]: Finished difference Result 207 states and 218 transitions. [2020-10-13 23:35:37,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:35:37,423 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 103 [2020-10-13 23:35:37,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:37,425 INFO L225 Difference]: With dead ends: 207 [2020-10-13 23:35:37,425 INFO L226 Difference]: Without dead ends: 118 [2020-10-13 23:35:37,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:35:37,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-13 23:35:37,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 115. [2020-10-13 23:35:37,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 23:35:37,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2020-10-13 23:35:37,432 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 103 [2020-10-13 23:35:37,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:37,432 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2020-10-13 23:35:37,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:35:37,433 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2020-10-13 23:35:37,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 23:35:37,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:37,434 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:37,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 23:35:37,434 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:37,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:37,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1628381432, now seen corresponding path program 13 times [2020-10-13 23:35:37,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:37,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642212858] [2020-10-13 23:35:37,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:37,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:37,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:37,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:42,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:42,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 23:35:42,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:35:42,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-13 23:35:42,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:42,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:35:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 23:35:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:35:42,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:42,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:42,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:42,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:42,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:42,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:42,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:35:42,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:42,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:42,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:42,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:42,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:42,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:42,703 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2020-10-13 23:35:42,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642212858] [2020-10-13 23:35:42,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:42,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:35:42,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539197908] [2020-10-13 23:35:42,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:35:42,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:42,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:35:42,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:35:42,706 INFO L87 Difference]: Start difference. First operand 115 states and 119 transitions. Second operand 17 states. [2020-10-13 23:35:42,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:42,990 INFO L93 Difference]: Finished difference Result 220 states and 231 transitions. [2020-10-13 23:35:42,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:35:42,996 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 110 [2020-10-13 23:35:42,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:42,997 INFO L225 Difference]: With dead ends: 220 [2020-10-13 23:35:42,997 INFO L226 Difference]: Without dead ends: 125 [2020-10-13 23:35:42,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:35:42,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-13 23:35:43,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 122. [2020-10-13 23:35:43,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-13 23:35:43,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 126 transitions. [2020-10-13 23:35:43,004 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 126 transitions. Word has length 110 [2020-10-13 23:35:43,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:43,005 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 126 transitions. [2020-10-13 23:35:43,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:35:43,005 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 126 transitions. [2020-10-13 23:35:43,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 23:35:43,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:43,006 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:43,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 23:35:43,006 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:43,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:43,006 INFO L82 PathProgramCache]: Analyzing trace with hash 674564954, now seen corresponding path program 14 times [2020-10-13 23:35:43,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:43,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486105591] [2020-10-13 23:35:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:43,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:43,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:43,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:48,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:48,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 23:35:48,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:35:48,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 23:35:48,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:48,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:35:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 23:35:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:35:48,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:48,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:48,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:48,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:48,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:48,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:48,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:35:48,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:48,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:48,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:48,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:48,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:48,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:48,226 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2020-10-13 23:35:48,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486105591] [2020-10-13 23:35:48,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:48,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:35:48,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202696698] [2020-10-13 23:35:48,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:35:48,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:48,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:35:48,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:35:48,228 INFO L87 Difference]: Start difference. First operand 122 states and 126 transitions. Second operand 18 states. [2020-10-13 23:35:48,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:48,516 INFO L93 Difference]: Finished difference Result 233 states and 244 transitions. [2020-10-13 23:35:48,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:35:48,516 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 117 [2020-10-13 23:35:48,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:48,518 INFO L225 Difference]: With dead ends: 233 [2020-10-13 23:35:48,518 INFO L226 Difference]: Without dead ends: 132 [2020-10-13 23:35:48,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:35:48,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-13 23:35:48,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2020-10-13 23:35:48,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-13 23:35:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2020-10-13 23:35:48,525 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 117 [2020-10-13 23:35:48,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:48,525 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 133 transitions. [2020-10-13 23:35:48,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:35:48,526 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 133 transitions. [2020-10-13 23:35:48,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 23:35:48,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:48,527 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:48,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 23:35:48,527 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:48,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:48,528 INFO L82 PathProgramCache]: Analyzing trace with hash -363733124, now seen corresponding path program 15 times [2020-10-13 23:35:48,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:48,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108981197] [2020-10-13 23:35:48,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:48,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:48,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:48,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:53,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:53,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 23:35:53,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:35:53,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-13 23:35:53,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:53,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:35:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 23:35:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:35:53,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:53,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:53,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:53,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:53,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:53,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:53,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:35:53,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:53,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:53,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:53,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:53,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:53,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:53,834 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2020-10-13 23:35:53,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108981197] [2020-10-13 23:35:53,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:53,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:35:53,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949233856] [2020-10-13 23:35:53,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:35:53,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:53,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:35:53,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:35:53,839 INFO L87 Difference]: Start difference. First operand 129 states and 133 transitions. Second operand 19 states. [2020-10-13 23:35:54,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:54,135 INFO L93 Difference]: Finished difference Result 246 states and 257 transitions. [2020-10-13 23:35:54,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:35:54,135 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 124 [2020-10-13 23:35:54,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:54,136 INFO L225 Difference]: With dead ends: 246 [2020-10-13 23:35:54,136 INFO L226 Difference]: Without dead ends: 139 [2020-10-13 23:35:54,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:35:54,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-13 23:35:54,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 136. [2020-10-13 23:35:54,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-13 23:35:54,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 140 transitions. [2020-10-13 23:35:54,146 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 140 transitions. Word has length 124 [2020-10-13 23:35:54,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:54,147 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 140 transitions. [2020-10-13 23:35:54,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:35:54,147 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 140 transitions. [2020-10-13 23:35:54,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 23:35:54,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:54,148 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:54,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 23:35:54,149 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:54,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:54,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1571697970, now seen corresponding path program 16 times [2020-10-13 23:35:54,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:54,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920934570] [2020-10-13 23:35:54,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:54,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:54,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:54,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:59,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:59,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 23:35:59,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:35:59,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5154 [2020-10-13 23:35:59,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:59,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:59,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:35:59,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-13 23:35:59,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:35:59,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:59,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:35:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:59,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:59,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:35:59,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:35:59,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:35:59,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:35:59,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:35:59,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:35:59,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:35:59,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:35:59,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:35:59,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:35:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-10-13 23:35:59,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920934570] [2020-10-13 23:35:59,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:35:59,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 23:35:59,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226139123] [2020-10-13 23:35:59,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 23:35:59,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:35:59,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 23:35:59,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:35:59,535 INFO L87 Difference]: Start difference. First operand 136 states and 140 transitions. Second operand 20 states. [2020-10-13 23:35:59,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:35:59,846 INFO L93 Difference]: Finished difference Result 259 states and 270 transitions. [2020-10-13 23:35:59,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:35:59,846 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 131 [2020-10-13 23:35:59,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:35:59,848 INFO L225 Difference]: With dead ends: 259 [2020-10-13 23:35:59,848 INFO L226 Difference]: Without dead ends: 146 [2020-10-13 23:35:59,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:35:59,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-13 23:35:59,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 143. [2020-10-13 23:35:59,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-13 23:35:59,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2020-10-13 23:35:59,856 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 131 [2020-10-13 23:35:59,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:35:59,856 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2020-10-13 23:35:59,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 23:35:59,856 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2020-10-13 23:35:59,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 23:35:59,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:35:59,858 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:35:59,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 23:35:59,858 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:35:59,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:35:59,859 INFO L82 PathProgramCache]: Analyzing trace with hash 985502192, now seen corresponding path program 17 times [2020-10-13 23:35:59,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:35:59,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575997767] [2020-10-13 23:35:59,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:35:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:35:59,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:59,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:35:59,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:05,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:05,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 23:36:05,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:36:05,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-10-13 23:36:05,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:05,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:05,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 23:36:05,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 23:36:05,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 23:36:05,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:05,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:36:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:05,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:05,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:05,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:36:05,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:36:05,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:36:05,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:05,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:05,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:36:05,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:36:05,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:36:05,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:36:05,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked. [2020-10-13 23:36:05,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575997767] [2020-10-13 23:36:05,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:36:05,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 23:36:05,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137131481] [2020-10-13 23:36:05,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 23:36:05,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:36:05,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 23:36:05,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:36:05,257 INFO L87 Difference]: Start difference. First operand 143 states and 147 transitions. Second operand 21 states. [2020-10-13 23:36:05,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:36:05,645 INFO L93 Difference]: Finished difference Result 272 states and 283 transitions. [2020-10-13 23:36:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 23:36:05,645 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 138 [2020-10-13 23:36:05,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:36:05,646 INFO L225 Difference]: With dead ends: 272 [2020-10-13 23:36:05,647 INFO L226 Difference]: Without dead ends: 153 [2020-10-13 23:36:05,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:36:05,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-13 23:36:05,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 150. [2020-10-13 23:36:05,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-13 23:36:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 154 transitions. [2020-10-13 23:36:05,654 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 154 transitions. Word has length 138 [2020-10-13 23:36:05,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:36:05,654 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 154 transitions. [2020-10-13 23:36:05,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 23:36:05,654 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 154 transitions. [2020-10-13 23:36:05,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-13 23:36:05,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:36:05,656 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:36:05,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 23:36:05,656 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:36:05,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:36:05,656 INFO L82 PathProgramCache]: Analyzing trace with hash 941702210, now seen corresponding path program 18 times [2020-10-13 23:36:05,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:36:05,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600347305] [2020-10-13 23:36:05,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:36:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:05,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:05,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:05,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:10,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:10,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 23:36:10,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:36:10,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 23:36:10,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:10,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:10,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 23:36:10,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 23:36:10,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 23:36:10,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:10,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:36:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:10,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:10,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:10,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:36:10,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:36:10,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:36:10,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:10,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:10,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:36:10,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:36:10,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:36:10,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:10,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2020-10-13 23:36:10,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600347305] [2020-10-13 23:36:10,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:36:10,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 23:36:10,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707856121] [2020-10-13 23:36:10,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 23:36:10,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:36:10,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 23:36:10,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:36:10,976 INFO L87 Difference]: Start difference. First operand 150 states and 154 transitions. Second operand 22 states. [2020-10-13 23:36:11,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:36:11,364 INFO L93 Difference]: Finished difference Result 285 states and 296 transitions. [2020-10-13 23:36:11,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 23:36:11,364 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 145 [2020-10-13 23:36:11,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:36:11,366 INFO L225 Difference]: With dead ends: 285 [2020-10-13 23:36:11,366 INFO L226 Difference]: Without dead ends: 160 [2020-10-13 23:36:11,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:36:11,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-13 23:36:11,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 157. [2020-10-13 23:36:11,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-13 23:36:11,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2020-10-13 23:36:11,373 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 145 [2020-10-13 23:36:11,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:36:11,374 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2020-10-13 23:36:11,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 23:36:11,374 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2020-10-13 23:36:11,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 23:36:11,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:36:11,375 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:36:11,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 23:36:11,376 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:36:11,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:36:11,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1260975716, now seen corresponding path program 19 times [2020-10-13 23:36:11,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:36:11,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446463281] [2020-10-13 23:36:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:36:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:11,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:11,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:11,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:16,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:16,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 23:36:16,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:36:16,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5108 [2020-10-13 23:36:16,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:16,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:16,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 23:36:16,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 23:36:16,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 23:36:16,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:16,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:36:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:16,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:16,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:16,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:36:16,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:36:16,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:36:16,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:16,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:16,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:36:16,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:36:16,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:36:16,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:16,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2020-10-13 23:36:16,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446463281] [2020-10-13 23:36:16,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:36:16,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 23:36:16,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025550905] [2020-10-13 23:36:16,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 23:36:16,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:36:16,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 23:36:16,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:36:16,783 INFO L87 Difference]: Start difference. First operand 157 states and 161 transitions. Second operand 23 states. [2020-10-13 23:36:17,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:36:17,180 INFO L93 Difference]: Finished difference Result 298 states and 309 transitions. [2020-10-13 23:36:17,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 23:36:17,180 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 152 [2020-10-13 23:36:17,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:36:17,182 INFO L225 Difference]: With dead ends: 298 [2020-10-13 23:36:17,182 INFO L226 Difference]: Without dead ends: 167 [2020-10-13 23:36:17,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:36:17,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-13 23:36:17,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 164. [2020-10-13 23:36:17,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-13 23:36:17,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 168 transitions. [2020-10-13 23:36:17,189 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 168 transitions. Word has length 152 [2020-10-13 23:36:17,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:36:17,190 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 168 transitions. [2020-10-13 23:36:17,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 23:36:17,190 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 168 transitions. [2020-10-13 23:36:17,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-13 23:36:17,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:36:17,191 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:36:17,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 23:36:17,192 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:36:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:36:17,192 INFO L82 PathProgramCache]: Analyzing trace with hash 356016054, now seen corresponding path program 20 times [2020-10-13 23:36:17,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:36:17,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528783625] [2020-10-13 23:36:17,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:36:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:17,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:17,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:17,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:22,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:22,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 23:36:22,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:36:22,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5137 [2020-10-13 23:36:22,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:22,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 23:36:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:36:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 23:36:22,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:22,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:36:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:22,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:22,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:22,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:36:22,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:36:22,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:36:22,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:22,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:22,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:36:22,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:36:22,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:36:22,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 1010 trivial. 0 not checked. [2020-10-13 23:36:22,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528783625] [2020-10-13 23:36:22,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:36:22,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 23:36:22,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536902203] [2020-10-13 23:36:22,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 23:36:22,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:36:22,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 23:36:22,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-13 23:36:22,667 INFO L87 Difference]: Start difference. First operand 164 states and 168 transitions. Second operand 24 states. [2020-10-13 23:36:23,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:36:23,087 INFO L93 Difference]: Finished difference Result 311 states and 322 transitions. [2020-10-13 23:36:23,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 23:36:23,090 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 159 [2020-10-13 23:36:23,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:36:23,091 INFO L225 Difference]: With dead ends: 311 [2020-10-13 23:36:23,091 INFO L226 Difference]: Without dead ends: 174 [2020-10-13 23:36:23,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-13 23:36:23,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-13 23:36:23,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 171. [2020-10-13 23:36:23,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-13 23:36:23,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 175 transitions. [2020-10-13 23:36:23,107 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 175 transitions. Word has length 159 [2020-10-13 23:36:23,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:36:23,107 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 175 transitions. [2020-10-13 23:36:23,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 23:36:23,107 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 175 transitions. [2020-10-13 23:36:23,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-13 23:36:23,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:36:23,109 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:36:23,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 23:36:23,109 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:36:23,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:36:23,109 INFO L82 PathProgramCache]: Analyzing trace with hash -83292968, now seen corresponding path program 21 times [2020-10-13 23:36:23,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:36:23,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931520283] [2020-10-13 23:36:23,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:36:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:23,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:23,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:23,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:28,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:28,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 23:36:28,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:36:28,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5107 [2020-10-13 23:36:28,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:28,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 23:36:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 23:36:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 23:36:28,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:28,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:36:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:28,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:28,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:28,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:36:28,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:36:28,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:36:28,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:28,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:28,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:36:28,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:36:28,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:36:28,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:28,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 1113 trivial. 0 not checked. [2020-10-13 23:36:28,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931520283] [2020-10-13 23:36:28,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:36:28,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 23:36:28,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150313783] [2020-10-13 23:36:28,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 23:36:28,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:36:28,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 23:36:28,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:36:28,600 INFO L87 Difference]: Start difference. First operand 171 states and 175 transitions. Second operand 25 states. [2020-10-13 23:36:29,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:36:29,038 INFO L93 Difference]: Finished difference Result 324 states and 335 transitions. [2020-10-13 23:36:29,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 23:36:29,038 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 166 [2020-10-13 23:36:29,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:36:29,040 INFO L225 Difference]: With dead ends: 324 [2020-10-13 23:36:29,040 INFO L226 Difference]: Without dead ends: 181 [2020-10-13 23:36:29,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:36:29,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-13 23:36:29,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 178. [2020-10-13 23:36:29,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 23:36:29,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 182 transitions. [2020-10-13 23:36:29,048 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 182 transitions. Word has length 166 [2020-10-13 23:36:29,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:36:29,049 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 182 transitions. [2020-10-13 23:36:29,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 23:36:29,049 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 182 transitions. [2020-10-13 23:36:29,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 23:36:29,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:36:29,050 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:36:29,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 23:36:29,050 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:36:29,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:36:29,051 INFO L82 PathProgramCache]: Analyzing trace with hash 28063018, now seen corresponding path program 22 times [2020-10-13 23:36:29,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:36:29,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046853287] [2020-10-13 23:36:29,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:36:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:29,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:29,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:29,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:34,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:34,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 23:36:34,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:36:34,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 23:36:34,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:34,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 23:36:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 23:36:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 23:36:34,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:34,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:36:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:34,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:34,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:34,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:36:34,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:36:34,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:36:34,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:34,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:34,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:36:34,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:36:34,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:36:34,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 1221 trivial. 0 not checked. [2020-10-13 23:36:34,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046853287] [2020-10-13 23:36:34,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:36:34,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 23:36:34,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834757558] [2020-10-13 23:36:34,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 23:36:34,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:36:34,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 23:36:34,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-13 23:36:34,459 INFO L87 Difference]: Start difference. First operand 178 states and 182 transitions. Second operand 26 states. [2020-10-13 23:36:34,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:36:34,884 INFO L93 Difference]: Finished difference Result 337 states and 348 transitions. [2020-10-13 23:36:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 23:36:34,885 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 173 [2020-10-13 23:36:34,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:36:34,887 INFO L225 Difference]: With dead ends: 337 [2020-10-13 23:36:34,887 INFO L226 Difference]: Without dead ends: 188 [2020-10-13 23:36:34,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-13 23:36:34,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-13 23:36:34,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 185. [2020-10-13 23:36:34,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-13 23:36:34,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 189 transitions. [2020-10-13 23:36:34,896 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 189 transitions. Word has length 173 [2020-10-13 23:36:34,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:36:34,896 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 189 transitions. [2020-10-13 23:36:34,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 23:36:34,897 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 189 transitions. [2020-10-13 23:36:34,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 23:36:34,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:36:34,898 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:36:34,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 23:36:34,898 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:36:34,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:36:34,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1907174068, now seen corresponding path program 23 times [2020-10-13 23:36:34,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:36:34,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503360598] [2020-10-13 23:36:34,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:36:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:34,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:34,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:35,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:39,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:39,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-13 23:36:39,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:36:39,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-13 23:36:39,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:39,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 23:36:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 23:36:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 23:36:39,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:40,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:36:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:40,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:40,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:40,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:36:40,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:36:40,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:36:40,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:40,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:40,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:36:40,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:36:40,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:36:40,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:40,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2020-10-13 23:36:40,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503360598] [2020-10-13 23:36:40,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:36:40,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 23:36:40,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964196533] [2020-10-13 23:36:40,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 23:36:40,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:36:40,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 23:36:40,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:36:40,382 INFO L87 Difference]: Start difference. First operand 185 states and 189 transitions. Second operand 27 states. [2020-10-13 23:36:40,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:36:40,851 INFO L93 Difference]: Finished difference Result 350 states and 361 transitions. [2020-10-13 23:36:40,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 23:36:40,851 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 180 [2020-10-13 23:36:40,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:36:40,852 INFO L225 Difference]: With dead ends: 350 [2020-10-13 23:36:40,853 INFO L226 Difference]: Without dead ends: 195 [2020-10-13 23:36:40,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:36:40,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-13 23:36:40,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2020-10-13 23:36:40,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 23:36:40,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 196 transitions. [2020-10-13 23:36:40,861 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 196 transitions. Word has length 180 [2020-10-13 23:36:40,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:36:40,862 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 196 transitions. [2020-10-13 23:36:40,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 23:36:40,862 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 196 transitions. [2020-10-13 23:36:40,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-13 23:36:40,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:36:40,863 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:36:40,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 23:36:40,864 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:36:40,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:36:40,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1575895906, now seen corresponding path program 24 times [2020-10-13 23:36:40,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:36:40,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091112324] [2020-10-13 23:36:40,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:36:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:40,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:40,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:41,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:46,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:46,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-13 23:36:46,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:36:46,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5198 [2020-10-13 23:36:46,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:46,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:46,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 23:36:46,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-13 23:36:46,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 23:36:46,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:46,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:36:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:46,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:46,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:46,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:36:46,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:36:46,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:36:46,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:46,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:46,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:36:46,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:36:46,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:36:46,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:36:46,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2020-10-13 23:36:46,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091112324] [2020-10-13 23:36:46,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:36:46,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 23:36:46,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089196229] [2020-10-13 23:36:46,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 23:36:46,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:36:46,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 23:36:46,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-13 23:36:46,646 INFO L87 Difference]: Start difference. First operand 192 states and 196 transitions. Second operand 28 states. [2020-10-13 23:36:47,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:36:47,269 INFO L93 Difference]: Finished difference Result 363 states and 374 transitions. [2020-10-13 23:36:47,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 23:36:47,270 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 187 [2020-10-13 23:36:47,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:36:47,272 INFO L225 Difference]: With dead ends: 363 [2020-10-13 23:36:47,272 INFO L226 Difference]: Without dead ends: 202 [2020-10-13 23:36:47,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-13 23:36:47,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-13 23:36:47,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 199. [2020-10-13 23:36:47,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-13 23:36:47,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 203 transitions. [2020-10-13 23:36:47,284 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 203 transitions. Word has length 187 [2020-10-13 23:36:47,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:36:47,286 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 203 transitions. [2020-10-13 23:36:47,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 23:36:47,287 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 203 transitions. [2020-10-13 23:36:47,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-13 23:36:47,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:36:47,289 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:36:47,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 23:36:47,289 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:36:47,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:36:47,291 INFO L82 PathProgramCache]: Analyzing trace with hash -310685760, now seen corresponding path program 25 times [2020-10-13 23:36:47,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:36:47,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422392892] [2020-10-13 23:36:47,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:36:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:47,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:47,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:47,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:52,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:52,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-13 23:36:52,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:36:52,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 23:36:52,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:52,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 23:36:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 23:36:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 23:36:52,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:52,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:36:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:52,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:52,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:52,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:36:52,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:36:52,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:36:52,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:52,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:36:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:36:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:36:52,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 1575 trivial. 0 not checked. [2020-10-13 23:36:52,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422392892] [2020-10-13 23:36:52,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:36:52,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 23:36:52,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094560939] [2020-10-13 23:36:52,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 23:36:52,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:36:52,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 23:36:52,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:36:52,864 INFO L87 Difference]: Start difference. First operand 199 states and 203 transitions. Second operand 29 states. [2020-10-13 23:36:53,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:36:53,471 INFO L93 Difference]: Finished difference Result 376 states and 387 transitions. [2020-10-13 23:36:53,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 23:36:53,471 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 194 [2020-10-13 23:36:53,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:36:53,473 INFO L225 Difference]: With dead ends: 376 [2020-10-13 23:36:53,474 INFO L226 Difference]: Without dead ends: 209 [2020-10-13 23:36:53,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:36:53,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-13 23:36:53,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 206. [2020-10-13 23:36:53,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-13 23:36:53,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 210 transitions. [2020-10-13 23:36:53,488 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 210 transitions. Word has length 194 [2020-10-13 23:36:53,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:36:53,488 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 210 transitions. [2020-10-13 23:36:53,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 23:36:53,489 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 210 transitions. [2020-10-13 23:36:53,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-13 23:36:53,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:36:53,491 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:36:53,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 23:36:53,492 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:36:53,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:36:53,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1216481774, now seen corresponding path program 26 times [2020-10-13 23:36:53,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:36:53,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127420040] [2020-10-13 23:36:53,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:36:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:53,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:53,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:53,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:58,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:58,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-13 23:36:58,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:36:58,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5189 [2020-10-13 23:36:58,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:58,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:58,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 23:36:58,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 23:36:58,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 23:36:58,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:59,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:36:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:59,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:59,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:36:59,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:36:59,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:36:59,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:36:59,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:36:59,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:36:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:36:59,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:36:59,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:36:59,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:36:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 1703 trivial. 0 not checked. [2020-10-13 23:36:59,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127420040] [2020-10-13 23:36:59,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:36:59,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-13 23:36:59,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540494378] [2020-10-13 23:36:59,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-13 23:36:59,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:36:59,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-13 23:36:59,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-13 23:36:59,183 INFO L87 Difference]: Start difference. First operand 206 states and 210 transitions. Second operand 30 states. [2020-10-13 23:36:59,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:36:59,648 INFO L93 Difference]: Finished difference Result 389 states and 400 transitions. [2020-10-13 23:36:59,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 23:36:59,648 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 201 [2020-10-13 23:36:59,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:36:59,650 INFO L225 Difference]: With dead ends: 389 [2020-10-13 23:36:59,650 INFO L226 Difference]: Without dead ends: 216 [2020-10-13 23:36:59,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-13 23:36:59,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-13 23:36:59,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 213. [2020-10-13 23:36:59,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-13 23:36:59,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 217 transitions. [2020-10-13 23:36:59,659 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 217 transitions. Word has length 201 [2020-10-13 23:36:59,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:36:59,659 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 217 transitions. [2020-10-13 23:36:59,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-13 23:36:59,660 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 217 transitions. [2020-10-13 23:36:59,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-13 23:36:59,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:36:59,661 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:36:59,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 23:36:59,662 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:36:59,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:36:59,663 INFO L82 PathProgramCache]: Analyzing trace with hash -445154252, now seen corresponding path program 27 times [2020-10-13 23:36:59,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:36:59,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815619681] [2020-10-13 23:36:59,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:36:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:36:59,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:59,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:36:59,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:04,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:04,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 23:37:04,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:37:04,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-13 23:37:04,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:04,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 23:37:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 23:37:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 23:37:04,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:05,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:37:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:05,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:05,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:05,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:37:05,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:37:05,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:37:05,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:05,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:37:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:37:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:37:05,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:05,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 1836 trivial. 0 not checked. [2020-10-13 23:37:05,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815619681] [2020-10-13 23:37:05,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:37:05,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 23:37:05,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383275933] [2020-10-13 23:37:05,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 23:37:05,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:37:05,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 23:37:05,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-13 23:37:05,268 INFO L87 Difference]: Start difference. First operand 213 states and 217 transitions. Second operand 31 states. [2020-10-13 23:37:05,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:37:05,781 INFO L93 Difference]: Finished difference Result 402 states and 413 transitions. [2020-10-13 23:37:05,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 23:37:05,782 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 208 [2020-10-13 23:37:05,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:37:05,783 INFO L225 Difference]: With dead ends: 402 [2020-10-13 23:37:05,783 INFO L226 Difference]: Without dead ends: 223 [2020-10-13 23:37:05,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-13 23:37:05,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-13 23:37:05,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 220. [2020-10-13 23:37:05,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-13 23:37:05,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 224 transitions. [2020-10-13 23:37:05,798 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 224 transitions. Word has length 208 [2020-10-13 23:37:05,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:37:05,799 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 224 transitions. [2020-10-13 23:37:05,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 23:37:05,799 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 224 transitions. [2020-10-13 23:37:05,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-13 23:37:05,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:37:05,801 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:37:05,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 23:37:05,802 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:37:05,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:37:05,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1602609542, now seen corresponding path program 28 times [2020-10-13 23:37:05,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:37:05,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626649050] [2020-10-13 23:37:05,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:37:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:05,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:06,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:06,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:10,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:10,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-13 23:37:10,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:37:10,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-13 23:37:10,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:10,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 23:37:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 23:37:10,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 23:37:10,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:11,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:37:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:11,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:11,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:11,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:37:11,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:37:11,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:37:11,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:11,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:11,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:37:11,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:37:11,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:37:11,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:37:11,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 1974 trivial. 0 not checked. [2020-10-13 23:37:11,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626649050] [2020-10-13 23:37:11,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:37:11,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 23:37:11,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370446789] [2020-10-13 23:37:11,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 23:37:11,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:37:11,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 23:37:11,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-13 23:37:11,492 INFO L87 Difference]: Start difference. First operand 220 states and 224 transitions. Second operand 32 states. [2020-10-13 23:37:12,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:37:12,083 INFO L93 Difference]: Finished difference Result 415 states and 426 transitions. [2020-10-13 23:37:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 23:37:12,084 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 215 [2020-10-13 23:37:12,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:37:12,088 INFO L225 Difference]: With dead ends: 415 [2020-10-13 23:37:12,089 INFO L226 Difference]: Without dead ends: 230 [2020-10-13 23:37:12,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-13 23:37:12,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-13 23:37:12,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 227. [2020-10-13 23:37:12,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-13 23:37:12,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 231 transitions. [2020-10-13 23:37:12,097 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 231 transitions. Word has length 215 [2020-10-13 23:37:12,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:37:12,098 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 231 transitions. [2020-10-13 23:37:12,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-13 23:37:12,098 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 231 transitions. [2020-10-13 23:37:12,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-13 23:37:12,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:37:12,100 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:37:12,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 23:37:12,100 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:37:12,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:37:12,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1740397224, now seen corresponding path program 29 times [2020-10-13 23:37:12,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:37:12,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858459882] [2020-10-13 23:37:12,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:37:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:12,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:12,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:12,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:17,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:17,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-13 23:37:17,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:37:17,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5114 [2020-10-13 23:37:17,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:17,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-13 23:37:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 23:37:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 23:37:17,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:17,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:37:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:17,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:17,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:17,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:37:17,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:37:17,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:37:17,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:17,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:17,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:37:17,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:37:17,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:37:17,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:17,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 2117 trivial. 0 not checked. [2020-10-13 23:37:17,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858459882] [2020-10-13 23:37:17,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:37:17,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-13 23:37:17,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563643513] [2020-10-13 23:37:17,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-13 23:37:17,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:37:17,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-13 23:37:17,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 23:37:17,813 INFO L87 Difference]: Start difference. First operand 227 states and 231 transitions. Second operand 33 states. [2020-10-13 23:37:18,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:37:18,437 INFO L93 Difference]: Finished difference Result 428 states and 439 transitions. [2020-10-13 23:37:18,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 23:37:18,438 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 222 [2020-10-13 23:37:18,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:37:18,439 INFO L225 Difference]: With dead ends: 428 [2020-10-13 23:37:18,440 INFO L226 Difference]: Without dead ends: 237 [2020-10-13 23:37:18,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 23:37:18,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-13 23:37:18,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 234. [2020-10-13 23:37:18,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-13 23:37:18,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 238 transitions. [2020-10-13 23:37:18,450 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 238 transitions. Word has length 222 [2020-10-13 23:37:18,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:37:18,450 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 238 transitions. [2020-10-13 23:37:18,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-13 23:37:18,450 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 238 transitions. [2020-10-13 23:37:18,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-13 23:37:18,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:37:18,452 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:37:18,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 23:37:18,453 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:37:18,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:37:18,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1413381882, now seen corresponding path program 30 times [2020-10-13 23:37:18,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:37:18,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26050683] [2020-10-13 23:37:18,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:37:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:18,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:18,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:18,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:23,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:23,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-13 23:37:23,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:37:23,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5363 [2020-10-13 23:37:23,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:23,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:23,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 23:37:23,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 23:37:23,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 23:37:23,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:37:24,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:37:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:24,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:24,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:24,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:37:24,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:37:24,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:37:24,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:24,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:24,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:37:24,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:37:24,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:37:24,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:24,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 2265 trivial. 0 not checked. [2020-10-13 23:37:24,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26050683] [2020-10-13 23:37:24,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:37:24,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-13 23:37:24,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093019216] [2020-10-13 23:37:24,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-13 23:37:24,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:37:24,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-13 23:37:24,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 23:37:24,462 INFO L87 Difference]: Start difference. First operand 234 states and 238 transitions. Second operand 34 states. [2020-10-13 23:37:24,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:37:24,976 INFO L93 Difference]: Finished difference Result 441 states and 452 transitions. [2020-10-13 23:37:24,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 23:37:24,977 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 229 [2020-10-13 23:37:24,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:37:24,978 INFO L225 Difference]: With dead ends: 441 [2020-10-13 23:37:24,979 INFO L226 Difference]: Without dead ends: 244 [2020-10-13 23:37:24,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 23:37:24,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-13 23:37:24,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 241. [2020-10-13 23:37:24,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-13 23:37:24,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 245 transitions. [2020-10-13 23:37:24,988 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 245 transitions. Word has length 229 [2020-10-13 23:37:24,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:37:24,988 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 245 transitions. [2020-10-13 23:37:24,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-13 23:37:24,988 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 245 transitions. [2020-10-13 23:37:24,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-13 23:37:24,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:37:24,990 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:37:24,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 23:37:24,990 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:37:24,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:37:24,990 INFO L82 PathProgramCache]: Analyzing trace with hash -901846244, now seen corresponding path program 31 times [2020-10-13 23:37:24,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:37:24,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465870167] [2020-10-13 23:37:24,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:37:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:25,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:25,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:25,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:30,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:30,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 23:37:30,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:37:30,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5460 [2020-10-13 23:37:30,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:30,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-13 23:37:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 23:37:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 23:37:30,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:31,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:37:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:31,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:31,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:31,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:37:31,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:37:31,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:37:31,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:31,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:31,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:37:31,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:37:31,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:37:31,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:31,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 2418 trivial. 0 not checked. [2020-10-13 23:37:31,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465870167] [2020-10-13 23:37:31,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:37:31,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-13 23:37:31,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886253358] [2020-10-13 23:37:31,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-13 23:37:31,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:37:31,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-13 23:37:31,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 23:37:31,130 INFO L87 Difference]: Start difference. First operand 241 states and 245 transitions. Second operand 35 states. [2020-10-13 23:37:31,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:37:31,641 INFO L93 Difference]: Finished difference Result 454 states and 465 transitions. [2020-10-13 23:37:31,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-13 23:37:31,642 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 236 [2020-10-13 23:37:31,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:37:31,643 INFO L225 Difference]: With dead ends: 454 [2020-10-13 23:37:31,643 INFO L226 Difference]: Without dead ends: 251 [2020-10-13 23:37:31,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 23:37:31,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-13 23:37:31,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 248. [2020-10-13 23:37:31,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-13 23:37:31,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 252 transitions. [2020-10-13 23:37:31,651 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 252 transitions. Word has length 236 [2020-10-13 23:37:31,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:37:31,651 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 252 transitions. [2020-10-13 23:37:31,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-13 23:37:31,652 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 252 transitions. [2020-10-13 23:37:31,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-13 23:37:31,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:37:31,653 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:37:31,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 23:37:31,654 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:37:31,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:37:31,654 INFO L82 PathProgramCache]: Analyzing trace with hash 742182510, now seen corresponding path program 32 times [2020-10-13 23:37:31,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:37:31,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188262040] [2020-10-13 23:37:31,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:37:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:31,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:31,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:31,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:36,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:36,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-13 23:37:36,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:37:36,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5286 [2020-10-13 23:37:36,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:36,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:36,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-13 23:37:36,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 23:37:36,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 23:37:36,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:37,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:37:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:37,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:37,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:37,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:37:37,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:37:37,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:37:37,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:37,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:37,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:37:37,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:37:37,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:37:37,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:37,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 2576 trivial. 0 not checked. [2020-10-13 23:37:37,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188262040] [2020-10-13 23:37:37,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:37:37,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-13 23:37:37,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046785336] [2020-10-13 23:37:37,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-13 23:37:37,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:37:37,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-13 23:37:37,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 23:37:37,647 INFO L87 Difference]: Start difference. First operand 248 states and 252 transitions. Second operand 36 states. [2020-10-13 23:37:38,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:37:38,312 INFO L93 Difference]: Finished difference Result 467 states and 478 transitions. [2020-10-13 23:37:38,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-13 23:37:38,312 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 243 [2020-10-13 23:37:38,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:37:38,315 INFO L225 Difference]: With dead ends: 467 [2020-10-13 23:37:38,315 INFO L226 Difference]: Without dead ends: 258 [2020-10-13 23:37:38,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 23:37:38,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-13 23:37:38,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 255. [2020-10-13 23:37:38,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-13 23:37:38,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 259 transitions. [2020-10-13 23:37:38,323 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 259 transitions. Word has length 243 [2020-10-13 23:37:38,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:37:38,323 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 259 transitions. [2020-10-13 23:37:38,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-13 23:37:38,323 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 259 transitions. [2020-10-13 23:37:38,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-13 23:37:38,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:37:38,325 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:37:38,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 23:37:38,325 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:37:38,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:37:38,325 INFO L82 PathProgramCache]: Analyzing trace with hash 125054352, now seen corresponding path program 33 times [2020-10-13 23:37:38,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:37:38,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678552416] [2020-10-13 23:37:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:37:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:38,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:38,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:38,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:44,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:44,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-13 23:37:44,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:37:44,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5756 [2020-10-13 23:37:44,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:44,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:44,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-13 23:37:44,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-13 23:37:44,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 23:37:44,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:44,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:37:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:44,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:44,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:44,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:37:44,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:37:44,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:37:44,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:44,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:37:44,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:37:44,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:37:44,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:44,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 2739 trivial. 0 not checked. [2020-10-13 23:37:44,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678552416] [2020-10-13 23:37:44,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:37:44,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-13 23:37:44,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130799427] [2020-10-13 23:37:44,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-13 23:37:44,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:37:44,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-13 23:37:44,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 23:37:44,826 INFO L87 Difference]: Start difference. First operand 255 states and 259 transitions. Second operand 37 states. [2020-10-13 23:37:45,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:37:45,470 INFO L93 Difference]: Finished difference Result 480 states and 491 transitions. [2020-10-13 23:37:45,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 23:37:45,471 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 250 [2020-10-13 23:37:45,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:37:45,473 INFO L225 Difference]: With dead ends: 480 [2020-10-13 23:37:45,473 INFO L226 Difference]: Without dead ends: 265 [2020-10-13 23:37:45,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 23:37:45,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-10-13 23:37:45,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 262. [2020-10-13 23:37:45,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-13 23:37:45,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 266 transitions. [2020-10-13 23:37:45,481 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 266 transitions. Word has length 250 [2020-10-13 23:37:45,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:37:45,481 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 266 transitions. [2020-10-13 23:37:45,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-13 23:37:45,482 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 266 transitions. [2020-10-13 23:37:45,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-13 23:37:45,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:37:45,483 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:37:45,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 23:37:45,484 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:37:45,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:37:45,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1701457950, now seen corresponding path program 34 times [2020-10-13 23:37:45,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:37:45,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271574910] [2020-10-13 23:37:45,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:37:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:45,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:45,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:45,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:50,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:50,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-13 23:37:50,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:37:50,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5212 [2020-10-13 23:37:50,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:50,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:50,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-13 23:37:50,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-13 23:37:50,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 23:37:50,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:51,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:37:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:51,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:51,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:51,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:37:51,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:37:51,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:37:51,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:51,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:51,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:37:51,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:37:51,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:37:51,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 2907 trivial. 0 not checked. [2020-10-13 23:37:51,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271574910] [2020-10-13 23:37:51,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:37:51,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-13 23:37:51,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964602780] [2020-10-13 23:37:51,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-13 23:37:51,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:37:51,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-13 23:37:51,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 23:37:51,466 INFO L87 Difference]: Start difference. First operand 262 states and 266 transitions. Second operand 38 states. [2020-10-13 23:37:52,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:37:52,147 INFO L93 Difference]: Finished difference Result 493 states and 504 transitions. [2020-10-13 23:37:52,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-13 23:37:52,148 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 257 [2020-10-13 23:37:52,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:37:52,150 INFO L225 Difference]: With dead ends: 493 [2020-10-13 23:37:52,150 INFO L226 Difference]: Without dead ends: 272 [2020-10-13 23:37:52,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 23:37:52,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-13 23:37:52,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 269. [2020-10-13 23:37:52,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-13 23:37:52,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 273 transitions. [2020-10-13 23:37:52,157 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 273 transitions. Word has length 257 [2020-10-13 23:37:52,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:37:52,157 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 273 transitions. [2020-10-13 23:37:52,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-13 23:37:52,158 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 273 transitions. [2020-10-13 23:37:52,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-13 23:37:52,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:37:52,159 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:37:52,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 23:37:52,160 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:37:52,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:37:52,160 INFO L82 PathProgramCache]: Analyzing trace with hash -28237308, now seen corresponding path program 35 times [2020-10-13 23:37:52,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:37:52,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324942108] [2020-10-13 23:37:52,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:37:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:52,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:52,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:52,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:57,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:57,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-13 23:37:57,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:37:57,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5398 [2020-10-13 23:37:57,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:57,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:57,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-13 23:37:57,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 23:37:57,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 23:37:57,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:58,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:37:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:58,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:58,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:37:58,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:37:58,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:37:58,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:37:58,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:37:58,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:37:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:37:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:37:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:37:58,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:37:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2020-10-13 23:37:58,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324942108] [2020-10-13 23:37:58,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:37:58,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-13 23:37:58,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560252044] [2020-10-13 23:37:58,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-13 23:37:58,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:37:58,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-13 23:37:58,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 23:37:58,357 INFO L87 Difference]: Start difference. First operand 269 states and 273 transitions. Second operand 39 states. [2020-10-13 23:37:59,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:37:59,061 INFO L93 Difference]: Finished difference Result 506 states and 517 transitions. [2020-10-13 23:37:59,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-13 23:37:59,062 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 264 [2020-10-13 23:37:59,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:37:59,064 INFO L225 Difference]: With dead ends: 506 [2020-10-13 23:37:59,064 INFO L226 Difference]: Without dead ends: 279 [2020-10-13 23:37:59,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 23:37:59,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-13 23:37:59,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 276. [2020-10-13 23:37:59,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-13 23:37:59,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 280 transitions. [2020-10-13 23:37:59,073 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 280 transitions. Word has length 264 [2020-10-13 23:37:59,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:37:59,073 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 280 transitions. [2020-10-13 23:37:59,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-13 23:37:59,074 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 280 transitions. [2020-10-13 23:37:59,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-13 23:37:59,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:37:59,076 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:37:59,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 23:37:59,076 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:37:59,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:37:59,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1361149098, now seen corresponding path program 36 times [2020-10-13 23:37:59,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:37:59,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294915334] [2020-10-13 23:37:59,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:37:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:37:59,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:59,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:37:59,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:04,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:04,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-13 23:38:04,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:38:04,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5411 [2020-10-13 23:38:04,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:04,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-13 23:38:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-13 23:38:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 23:38:04,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:38:05,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:38:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:05,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:05,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:05,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:38:05,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:38:05,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:38:05,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:05,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:38:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:38:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:38:05,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:38:05,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 3258 trivial. 0 not checked. [2020-10-13 23:38:05,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294915334] [2020-10-13 23:38:05,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:38:05,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-13 23:38:05,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614857079] [2020-10-13 23:38:05,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-13 23:38:05,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:38:05,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-13 23:38:05,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 23:38:05,358 INFO L87 Difference]: Start difference. First operand 276 states and 280 transitions. Second operand 40 states. [2020-10-13 23:38:06,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:38:06,051 INFO L93 Difference]: Finished difference Result 519 states and 530 transitions. [2020-10-13 23:38:06,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-13 23:38:06,052 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 271 [2020-10-13 23:38:06,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:38:06,054 INFO L225 Difference]: With dead ends: 519 [2020-10-13 23:38:06,054 INFO L226 Difference]: Without dead ends: 286 [2020-10-13 23:38:06,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 23:38:06,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-13 23:38:06,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 283. [2020-10-13 23:38:06,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-10-13 23:38:06,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 287 transitions. [2020-10-13 23:38:06,061 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 287 transitions. Word has length 271 [2020-10-13 23:38:06,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:38:06,062 INFO L479 AbstractCegarLoop]: Abstraction has 283 states and 287 transitions. [2020-10-13 23:38:06,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-13 23:38:06,062 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 287 transitions. [2020-10-13 23:38:06,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-13 23:38:06,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:38:06,064 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:38:06,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 23:38:06,064 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:38:06,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:38:06,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1303721864, now seen corresponding path program 37 times [2020-10-13 23:38:06,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:38:06,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35671979] [2020-10-13 23:38:06,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:38:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:06,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:06,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:06,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:12,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:12,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-13 23:38:12,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:38:12,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6600 [2020-10-13 23:38:12,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:12,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:12,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-13 23:38:12,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 23:38:12,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 23:38:12,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:38:13,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:38:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:13,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:13,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:13,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:38:13,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:38:13,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:38:13,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:13,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:13,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:38:13,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:38:13,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:38:13,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:38:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 3441 trivial. 0 not checked. [2020-10-13 23:38:13,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35671979] [2020-10-13 23:38:13,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:38:13,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-13 23:38:13,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930781826] [2020-10-13 23:38:13,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-13 23:38:13,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:38:13,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-13 23:38:13,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 23:38:13,594 INFO L87 Difference]: Start difference. First operand 283 states and 287 transitions. Second operand 41 states. [2020-10-13 23:38:14,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:38:14,308 INFO L93 Difference]: Finished difference Result 532 states and 543 transitions. [2020-10-13 23:38:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-13 23:38:14,309 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 278 [2020-10-13 23:38:14,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:38:14,311 INFO L225 Difference]: With dead ends: 532 [2020-10-13 23:38:14,311 INFO L226 Difference]: Without dead ends: 293 [2020-10-13 23:38:14,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 23:38:14,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-13 23:38:14,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 290. [2020-10-13 23:38:14,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 23:38:14,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 294 transitions. [2020-10-13 23:38:14,319 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 294 transitions. Word has length 278 [2020-10-13 23:38:14,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:38:14,319 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 294 transitions. [2020-10-13 23:38:14,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-13 23:38:14,319 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 294 transitions. [2020-10-13 23:38:14,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-13 23:38:14,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:38:14,321 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:38:14,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 23:38:14,322 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:38:14,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:38:14,322 INFO L82 PathProgramCache]: Analyzing trace with hash 355199178, now seen corresponding path program 38 times [2020-10-13 23:38:14,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:38:14,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137029100] [2020-10-13 23:38:14,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:38:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:14,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:14,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:14,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:19,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:19,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-13 23:38:19,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:38:19,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5256 [2020-10-13 23:38:19,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:19,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:19,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-13 23:38:19,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-13 23:38:19,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 23:38:19,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:38:20,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:38:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:20,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:20,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:20,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:38:20,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:38:20,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:38:20,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:20,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:38:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:38:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:38:20,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:38:20,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 3629 trivial. 0 not checked. [2020-10-13 23:38:20,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137029100] [2020-10-13 23:38:20,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:38:20,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-13 23:38:20,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378326959] [2020-10-13 23:38:20,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-13 23:38:20,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:38:20,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-13 23:38:20,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-13 23:38:20,563 INFO L87 Difference]: Start difference. First operand 290 states and 294 transitions. Second operand 42 states. [2020-10-13 23:38:21,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:38:21,393 INFO L93 Difference]: Finished difference Result 545 states and 556 transitions. [2020-10-13 23:38:21,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-13 23:38:21,394 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 285 [2020-10-13 23:38:21,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:38:21,396 INFO L225 Difference]: With dead ends: 545 [2020-10-13 23:38:21,396 INFO L226 Difference]: Without dead ends: 300 [2020-10-13 23:38:21,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-13 23:38:21,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-13 23:38:21,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 297. [2020-10-13 23:38:21,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-10-13 23:38:21,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 301 transitions. [2020-10-13 23:38:21,403 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 301 transitions. Word has length 285 [2020-10-13 23:38:21,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:38:21,404 INFO L479 AbstractCegarLoop]: Abstraction has 297 states and 301 transitions. [2020-10-13 23:38:21,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-13 23:38:21,404 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 301 transitions. [2020-10-13 23:38:21,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-13 23:38:21,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:38:21,406 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:38:21,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 23:38:21,406 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:38:21,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:38:21,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1957289748, now seen corresponding path program 39 times [2020-10-13 23:38:21,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:38:21,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725272879] [2020-10-13 23:38:21,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:38:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:21,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:21,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:21,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:26,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:26,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-13 23:38:26,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:38:26,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5490 [2020-10-13 23:38:26,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:26,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-13 23:38:26,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 23:38:26,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 23:38:26,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:38:27,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:38:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:27,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:27,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:27,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:38:27,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:38:27,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:38:27,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:27,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:27,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:38:27,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:38:27,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:38:27,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:38:27,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 3822 trivial. 0 not checked. [2020-10-13 23:38:27,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725272879] [2020-10-13 23:38:27,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:38:27,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-13 23:38:27,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288671702] [2020-10-13 23:38:27,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-13 23:38:27,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:38:27,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-13 23:38:27,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-13 23:38:27,910 INFO L87 Difference]: Start difference. First operand 297 states and 301 transitions. Second operand 43 states. [2020-10-13 23:38:28,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:38:28,727 INFO L93 Difference]: Finished difference Result 558 states and 569 transitions. [2020-10-13 23:38:28,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-13 23:38:28,727 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 292 [2020-10-13 23:38:28,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:38:28,729 INFO L225 Difference]: With dead ends: 558 [2020-10-13 23:38:28,730 INFO L226 Difference]: Without dead ends: 307 [2020-10-13 23:38:28,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-13 23:38:28,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-13 23:38:28,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 304. [2020-10-13 23:38:28,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-10-13 23:38:28,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 308 transitions. [2020-10-13 23:38:28,738 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 308 transitions. Word has length 292 [2020-10-13 23:38:28,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:38:28,739 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 308 transitions. [2020-10-13 23:38:28,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-13 23:38:28,739 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 308 transitions. [2020-10-13 23:38:28,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-13 23:38:28,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:38:28,741 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:38:28,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 23:38:28,741 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:38:28,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:38:28,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1444085822, now seen corresponding path program 40 times [2020-10-13 23:38:28,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:38:28,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870129524] [2020-10-13 23:38:28,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:38:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:28,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:28,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:29,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking...