/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SHALLOWEST --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:45:21,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:45:21,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:45:21,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:45:21,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:45:21,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:45:21,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:45:21,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:45:21,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:45:21,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:45:21,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:45:21,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:45:21,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:45:21,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:45:21,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:45:21,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:45:21,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:45:21,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:45:21,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:45:21,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:45:21,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:45:21,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:45:21,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:45:21,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:45:21,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:45:21,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:45:21,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:45:21,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:45:21,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:45:21,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:45:21,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:45:21,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:45:21,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:45:21,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:45:21,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:45:21,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:45:21,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:45:21,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:45:21,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:45:21,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:45:21,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:45:21,230 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 [2020-10-26 22:45:21,289 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:45:21,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:45:21,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:45:21,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:45:21,296 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:45:21,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:45:21,297 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:45:21,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:45:21,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:45:21,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:45:21,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:45:21,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:45:21,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:45:21,299 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:45:21,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:45:21,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:45:21,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:45:21,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:45:21,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:45:21,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:45:21,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:45:21,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:45:21,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:45:21,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:45:21,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:45:21,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:45:21,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:45:21,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:45:21,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:45:21,304 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:45:21,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:45:21,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:45:21,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:45:21,875 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:45:21,876 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:45:21,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label55.c [2020-10-26 22:45:21,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac484a011/27c4c7c105b84aebb88a1d8ff9fd8ff7/FLAG4740b536d [2020-10-26 22:45:22,706 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:45:22,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label55.c [2020-10-26 22:45:22,732 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac484a011/27c4c7c105b84aebb88a1d8ff9fd8ff7/FLAG4740b536d [2020-10-26 22:45:22,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac484a011/27c4c7c105b84aebb88a1d8ff9fd8ff7 [2020-10-26 22:45:22,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:45:22,940 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:45:22,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:45:22,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:45:22,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:45:22,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:45:22" (1/1) ... [2020-10-26 22:45:22,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104476a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:45:22, skipping insertion in model container [2020-10-26 22:45:22,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:45:22" (1/1) ... [2020-10-26 22:45:22,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:45:23,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:45:23,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:45:23,645 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:45:23,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:45:24,020 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:45:24,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:45:24 WrapperNode [2020-10-26 22:45:24,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:45:24,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:45:24,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:45:24,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:45:24,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:45:24" (1/1) ... [2020-10-26 22:45:24,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:45:24" (1/1) ... [2020-10-26 22:45:24,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:45:24" (1/1) ... [2020-10-26 22:45:24,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:45:24" (1/1) ... [2020-10-26 22:45:24,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:45:24" (1/1) ... [2020-10-26 22:45:24,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:45:24" (1/1) ... [2020-10-26 22:45:24,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:45:24" (1/1) ... [2020-10-26 22:45:24,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:45:24,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:45:24,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:45:24,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:45:24,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:45:24" (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 [2020-10-26 22:45:24,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:45:24,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:45:24,344 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:45:24,344 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:45:24,344 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:45:24,344 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:45:24,344 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:45:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:45:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:45:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:45:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:45:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:45:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:45:24,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:45:24,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:45:24,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:45:24,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:45:24,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:45:24,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:45:26,535 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:45:26,535 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:45:26,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:45:26 BoogieIcfgContainer [2020-10-26 22:45:26,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:45:26,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:45:26,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:45:26,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:45:26,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:45:22" (1/3) ... [2020-10-26 22:45:26,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b80d1ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:45:26, skipping insertion in model container [2020-10-26 22:45:26,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:45:24" (2/3) ... [2020-10-26 22:45:26,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b80d1ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:45:26, skipping insertion in model container [2020-10-26 22:45:26,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:45:26" (3/3) ... [2020-10-26 22:45:26,547 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label55.c [2020-10-26 22:45:26,560 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:45:26,567 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:45:26,583 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:45:26,614 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:45:26,614 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:45:26,614 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:45:26,614 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:45:26,614 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:45:26,615 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:45:26,615 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:45:26,615 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:45:26,640 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-26 22:45:26,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-26 22:45:26,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:26,651 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, 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] [2020-10-26 22:45:26,651 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:26,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:26,658 INFO L82 PathProgramCache]: Analyzing trace with hash -740741712, now seen corresponding path program 1 times [2020-10-26 22:45:26,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:26,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644041835] [2020-10-26 22:45:26,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:26,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:27,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:27,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-26 22:45:27,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:27,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-10-26 22:45:27,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:27,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:45:27,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:45:27,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-26 22:45:27,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 22:45:27,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:27,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:27,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:27,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:27,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:27,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 22:45:27,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:27,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:27,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:45:27,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 24 [2020-10-26 22:45:27,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:45:27,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644041835] [2020-10-26 22:45:27,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:45:27,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 22:45:27,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107149610] [2020-10-26 22:45:27,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 22:45:27,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:27,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 22:45:27,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 22:45:27,911 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-26 22:45:31,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:31,432 INFO L93 Difference]: Finished difference Result 796 states and 1392 transitions. [2020-10-26 22:45:31,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:45:31,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-26 22:45:31,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:31,466 INFO L225 Difference]: With dead ends: 796 [2020-10-26 22:45:31,466 INFO L226 Difference]: Without dead ends: 435 [2020-10-26 22:45:31,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:45:31,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-26 22:45:31,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 431. [2020-10-26 22:45:31,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-10-26 22:45:31,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 619 transitions. [2020-10-26 22:45:31,580 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 619 transitions. Word has length 52 [2020-10-26 22:45:31,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:31,581 INFO L481 AbstractCegarLoop]: Abstraction has 431 states and 619 transitions. [2020-10-26 22:45:31,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 22:45:31,582 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 619 transitions. [2020-10-26 22:45:31,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-26 22:45:31,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:31,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:45:31,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:45:31,589 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:31,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:31,590 INFO L82 PathProgramCache]: Analyzing trace with hash 395772620, now seen corresponding path program 1 times [2020-10-26 22:45:31,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:31,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94204522] [2020-10-26 22:45:31,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:31,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:31,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:33,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:33,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:33,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 22:45:33,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:45:33,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2306 [2020-10-26 22:45:33,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:33,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:45:33,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:45:33,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 22:45:33,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:45:34,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:34,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:34,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:34,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:34,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:34,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 22:45:34,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:34,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:34,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:34,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:45:34,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:34,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:34,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:34,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:34,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 22:45:34,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:34,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-26 22:45:34,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:34,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:34,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:34,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:45:34,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:45:34,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94204522] [2020-10-26 22:45:34,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:45:34,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:45:34,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122744068] [2020-10-26 22:45:34,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:45:34,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:34,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:45:34,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:45:34,577 INFO L87 Difference]: Start difference. First operand 431 states and 619 transitions. Second operand 7 states. [2020-10-26 22:45:38,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:38,139 INFO L93 Difference]: Finished difference Result 1276 states and 1859 transitions. [2020-10-26 22:45:38,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:45:38,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-26 22:45:38,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:38,148 INFO L225 Difference]: With dead ends: 1276 [2020-10-26 22:45:38,148 INFO L226 Difference]: Without dead ends: 851 [2020-10-26 22:45:38,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:45:38,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2020-10-26 22:45:38,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 827. [2020-10-26 22:45:38,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2020-10-26 22:45:38,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1115 transitions. [2020-10-26 22:45:38,225 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1115 transitions. Word has length 124 [2020-10-26 22:45:38,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:38,226 INFO L481 AbstractCegarLoop]: Abstraction has 827 states and 1115 transitions. [2020-10-26 22:45:38,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:45:38,226 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1115 transitions. [2020-10-26 22:45:38,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-26 22:45:38,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:38,232 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1] [2020-10-26 22:45:38,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:45:38,235 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:38,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:38,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1366731588, now seen corresponding path program 1 times [2020-10-26 22:45:38,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:38,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664586700] [2020-10-26 22:45:38,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:38,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:38,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:39,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:39,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:40,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:40,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-26 22:45:40,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:45:40,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1787 [2020-10-26 22:45:40,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:45:40,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:45:40,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 22:45:40,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:40,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:40,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:40,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:40,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:40,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:40,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 22:45:40,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:40,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:40,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:40,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:45:40,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:40,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:40,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:40,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:40,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:45:40,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:40,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 22:45:40,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:40,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:40,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:40,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:45:40,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:40,545 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:45:40,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664586700] [2020-10-26 22:45:40,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:45:40,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:45:40,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601829046] [2020-10-26 22:45:40,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:45:40,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:40,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:45:40,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:45:40,553 INFO L87 Difference]: Start difference. First operand 827 states and 1115 transitions. Second operand 7 states. [2020-10-26 22:45:44,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:44,341 INFO L93 Difference]: Finished difference Result 2495 states and 3431 transitions. [2020-10-26 22:45:44,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:45:44,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-26 22:45:44,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:44,355 INFO L225 Difference]: With dead ends: 2495 [2020-10-26 22:45:44,355 INFO L226 Difference]: Without dead ends: 1674 [2020-10-26 22:45:44,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:45:44,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2020-10-26 22:45:44,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1633. [2020-10-26 22:45:44,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1633 states. [2020-10-26 22:45:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2068 transitions. [2020-10-26 22:45:44,441 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2068 transitions. Word has length 132 [2020-10-26 22:45:44,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:44,442 INFO L481 AbstractCegarLoop]: Abstraction has 1633 states and 2068 transitions. [2020-10-26 22:45:44,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:45:44,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2068 transitions. [2020-10-26 22:45:44,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-26 22:45:44,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:44,457 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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] [2020-10-26 22:45:44,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:45:44,458 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:44,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:44,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1260479933, now seen corresponding path program 1 times [2020-10-26 22:45:44,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:44,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266168546] [2020-10-26 22:45:44,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:44,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:45,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:45,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-26 22:45:45,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:45,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-10-26 22:45:45,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:45,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:45:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 22:45:45,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:45:45,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:45,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:45,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:45,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:45,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:45:45,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:45,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:45,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:45,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:45,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:45,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:45:45,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:45,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-26 22:45:45,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:45,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:45,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:45,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:45:45,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:45:45,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266168546] [2020-10-26 22:45:45,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:45,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:45:45,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921934289] [2020-10-26 22:45:45,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:45:45,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:45,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:45:45,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:45:45,485 INFO L87 Difference]: Start difference. First operand 1633 states and 2068 transitions. Second operand 5 states. [2020-10-26 22:45:48,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:48,401 INFO L93 Difference]: Finished difference Result 3689 states and 4908 transitions. [2020-10-26 22:45:48,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:45:48,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-26 22:45:48,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:48,425 INFO L225 Difference]: With dead ends: 3689 [2020-10-26 22:45:48,425 INFO L226 Difference]: Without dead ends: 2250 [2020-10-26 22:45:48,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:45:48,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2020-10-26 22:45:48,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 2229. [2020-10-26 22:45:48,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2229 states. [2020-10-26 22:45:48,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 2919 transitions. [2020-10-26 22:45:48,547 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 2919 transitions. Word has length 183 [2020-10-26 22:45:48,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:48,550 INFO L481 AbstractCegarLoop]: Abstraction has 2229 states and 2919 transitions. [2020-10-26 22:45:48,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:45:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 2919 transitions. [2020-10-26 22:45:48,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-26 22:45:48,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:48,557 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:45:48,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:45:48,558 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:48,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:48,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1157668738, now seen corresponding path program 1 times [2020-10-26 22:45:48,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:48,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137868474] [2020-10-26 22:45:48,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:48,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:48,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:49,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:50,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:50,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-26 22:45:50,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:45:50,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2202 [2020-10-26 22:45:50,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:50,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:50,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:45:50,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:45:50,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:50,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:50,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:50,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:50,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:50,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:50,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:45:50,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:50,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:50,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:50,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:50,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:50,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:51,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:51,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:51,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:45:51,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:51,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 22:45:51,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:51,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:51,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:51,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:45:51,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:51,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:45:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:51,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:51,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:51,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 22:45:51,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:51,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 22:45:51,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:51,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:51,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:51,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:45:51,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:45:51,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137868474] [2020-10-26 22:45:51,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:51,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:45:51,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245826070] [2020-10-26 22:45:51,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:45:51,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:51,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:45:51,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:45:51,485 INFO L87 Difference]: Start difference. First operand 2229 states and 2919 transitions. Second operand 7 states. [2020-10-26 22:45:54,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:54,650 INFO L93 Difference]: Finished difference Result 5109 states and 7061 transitions. [2020-10-26 22:45:54,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:45:54,651 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-10-26 22:45:54,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:54,672 INFO L225 Difference]: With dead ends: 5109 [2020-10-26 22:45:54,672 INFO L226 Difference]: Without dead ends: 3074 [2020-10-26 22:45:54,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:45:54,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2020-10-26 22:45:54,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 3018. [2020-10-26 22:45:54,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3018 states. [2020-10-26 22:45:54,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 3941 transitions. [2020-10-26 22:45:54,804 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 3941 transitions. Word has length 240 [2020-10-26 22:45:54,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:54,805 INFO L481 AbstractCegarLoop]: Abstraction has 3018 states and 3941 transitions. [2020-10-26 22:45:54,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:45:54,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 3941 transitions. [2020-10-26 22:45:54,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-26 22:45:54,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:54,811 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:45:54,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:45:54,812 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:54,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:54,813 INFO L82 PathProgramCache]: Analyzing trace with hash -2017791626, now seen corresponding path program 1 times [2020-10-26 22:45:54,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:54,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298735450] [2020-10-26 22:45:54,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:54,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:55,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:55,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:58,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:58,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-26 22:45:58,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:45:58,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3438 [2020-10-26 22:45:58,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:58,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:45:58,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:45:58,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-26 22:45:58,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:58,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:58,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:58,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:58,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:58,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:58,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 22:45:58,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:58,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:58,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:58,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:45:58,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:58,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:58,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:58,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:58,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:45:58,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:58,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-26 22:45:58,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:58,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:58,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:58,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:45:58,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:59,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:45:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:59,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:59,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:59,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:45:59,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:59,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-26 22:45:59,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:45:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:45:59,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:59,741 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 140 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 22:45:59,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298735450] [2020-10-26 22:45:59,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:59,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:45:59,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358748868] [2020-10-26 22:45:59,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:45:59,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:59,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:45:59,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:45:59,747 INFO L87 Difference]: Start difference. First operand 3018 states and 3941 transitions. Second operand 9 states. [2020-10-26 22:46:01,194 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-26 22:46:03,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:03,587 INFO L93 Difference]: Finished difference Result 6946 states and 9144 transitions. [2020-10-26 22:46:03,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 22:46:03,594 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 241 [2020-10-26 22:46:03,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:03,618 INFO L225 Difference]: With dead ends: 6946 [2020-10-26 22:46:03,618 INFO L226 Difference]: Without dead ends: 4112 [2020-10-26 22:46:03,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-26 22:46:03,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4112 states. [2020-10-26 22:46:03,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4112 to 4030. [2020-10-26 22:46:03,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4030 states. [2020-10-26 22:46:03,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4030 states to 4030 states and 5178 transitions. [2020-10-26 22:46:03,780 INFO L78 Accepts]: Start accepts. Automaton has 4030 states and 5178 transitions. Word has length 241 [2020-10-26 22:46:03,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:03,781 INFO L481 AbstractCegarLoop]: Abstraction has 4030 states and 5178 transitions. [2020-10-26 22:46:03,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:46:03,781 INFO L276 IsEmpty]: Start isEmpty. Operand 4030 states and 5178 transitions. [2020-10-26 22:46:03,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-26 22:46:03,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:03,787 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:46:03,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:46:03,787 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:03,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:03,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1659991678, now seen corresponding path program 1 times [2020-10-26 22:46:03,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:03,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955339322] [2020-10-26 22:46:03,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:03,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:03,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:04,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:06,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:06,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-26 22:46:06,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:46:06,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2825 [2020-10-26 22:46:06,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:46:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:46:06,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:46:06,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:06,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:06,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:06,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:06,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:06,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:46:06,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:06,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:06,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:06,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:07,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:07,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:46:07,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:07,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-26 22:46:07,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:46:07,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:07,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:46:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:07,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:07,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:07,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:46:07,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:07,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-26 22:46:07,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:07,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:07,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:46:07,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:07,515 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:46:07,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955339322] [2020-10-26 22:46:07,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:07,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:46:07,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577732292] [2020-10-26 22:46:07,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:46:07,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:07,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:46:07,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:46:07,519 INFO L87 Difference]: Start difference. First operand 4030 states and 5178 transitions. Second operand 7 states. [2020-10-26 22:46:12,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:12,118 INFO L93 Difference]: Finished difference Result 8325 states and 10880 transitions. [2020-10-26 22:46:12,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:46:12,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-10-26 22:46:12,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:12,151 INFO L225 Difference]: With dead ends: 8325 [2020-10-26 22:46:12,152 INFO L226 Difference]: Without dead ends: 4679 [2020-10-26 22:46:12,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:46:12,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4679 states. [2020-10-26 22:46:12,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4679 to 4624. [2020-10-26 22:46:12,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4624 states. [2020-10-26 22:46:12,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4624 states to 4624 states and 5913 transitions. [2020-10-26 22:46:12,305 INFO L78 Accepts]: Start accepts. Automaton has 4624 states and 5913 transitions. Word has length 242 [2020-10-26 22:46:12,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:12,306 INFO L481 AbstractCegarLoop]: Abstraction has 4624 states and 5913 transitions. [2020-10-26 22:46:12,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:46:12,306 INFO L276 IsEmpty]: Start isEmpty. Operand 4624 states and 5913 transitions. [2020-10-26 22:46:12,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-26 22:46:12,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:12,312 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:46:12,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 22:46:12,313 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:12,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:12,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1693558422, now seen corresponding path program 1 times [2020-10-26 22:46:12,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:12,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715067350] [2020-10-26 22:46:12,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:12,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:12,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:13,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:13,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-26 22:46:13,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:46:13,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1336 [2020-10-26 22:46:13,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:13,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:13,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:46:13,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 22:46:13,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:13,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:13,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:13,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:13,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:13,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:13,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 22:46:13,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:13,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:13,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:13,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:13,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:46:13,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:13,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:14,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:14,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:46:14,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:14,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 22:46:14,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:14,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:14,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:46:14,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:46:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:14,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:14,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:14,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:46:14,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:14,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 22:46:14,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:14,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:46:14,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:14,403 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-26 22:46:14,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715067350] [2020-10-26 22:46:14,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:14,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:46:14,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485966605] [2020-10-26 22:46:14,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:46:14,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:14,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:46:14,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:46:14,406 INFO L87 Difference]: Start difference. First operand 4624 states and 5913 transitions. Second operand 5 states. [2020-10-26 22:46:16,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:16,639 INFO L93 Difference]: Finished difference Result 7911 states and 10287 transitions. [2020-10-26 22:46:16,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:46:16,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 252 [2020-10-26 22:46:16,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:16,666 INFO L225 Difference]: With dead ends: 7911 [2020-10-26 22:46:16,666 INFO L226 Difference]: Without dead ends: 4634 [2020-10-26 22:46:16,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:46:16,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4634 states. [2020-10-26 22:46:16,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4634 to 4622. [2020-10-26 22:46:16,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4622 states. [2020-10-26 22:46:16,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4622 states to 4622 states and 5888 transitions. [2020-10-26 22:46:16,818 INFO L78 Accepts]: Start accepts. Automaton has 4622 states and 5888 transitions. Word has length 252 [2020-10-26 22:46:16,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:16,819 INFO L481 AbstractCegarLoop]: Abstraction has 4622 states and 5888 transitions. [2020-10-26 22:46:16,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:46:16,820 INFO L276 IsEmpty]: Start isEmpty. Operand 4622 states and 5888 transitions. [2020-10-26 22:46:16,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-26 22:46:16,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:16,827 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:46:16,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 22:46:16,827 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:16,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:16,828 INFO L82 PathProgramCache]: Analyzing trace with hash 760395242, now seen corresponding path program 1 times [2020-10-26 22:46:16,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:16,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8545780] [2020-10-26 22:46:16,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:16,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:17,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:17,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:19,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:19,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-26 22:46:19,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:46:19,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2753 [2020-10-26 22:46:19,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:19,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:19,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 22:46:19,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:46:19,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:19,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:19,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:19,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:19,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:19,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:46:19,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:19,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:19,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:19,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:19,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:19,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:19,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:19,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:19,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:46:19,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:19,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 22:46:19,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:19,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:19,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:19,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 22:46:19,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:46:20,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:46:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:20,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:20,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:20,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:46:20,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:20,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 22:46:20,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:20,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:20,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:20,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:46:20,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:20,452 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:46:20,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8545780] [2020-10-26 22:46:20,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:20,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:46:20,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089250528] [2020-10-26 22:46:20,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:46:20,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:20,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:46:20,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:46:20,458 INFO L87 Difference]: Start difference. First operand 4622 states and 5888 transitions. Second operand 7 states. [2020-10-26 22:46:23,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:23,947 INFO L93 Difference]: Finished difference Result 9775 states and 13338 transitions. [2020-10-26 22:46:23,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 22:46:23,949 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-10-26 22:46:23,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:23,988 INFO L225 Difference]: With dead ends: 9775 [2020-10-26 22:46:23,989 INFO L226 Difference]: Without dead ends: 5537 [2020-10-26 22:46:24,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:46:24,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5537 states. [2020-10-26 22:46:24,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5537 to 5373. [2020-10-26 22:46:24,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5373 states. [2020-10-26 22:46:24,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5373 states to 5373 states and 6676 transitions. [2020-10-26 22:46:24,193 INFO L78 Accepts]: Start accepts. Automaton has 5373 states and 6676 transitions. Word has length 252 [2020-10-26 22:46:24,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:24,194 INFO L481 AbstractCegarLoop]: Abstraction has 5373 states and 6676 transitions. [2020-10-26 22:46:24,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:46:24,194 INFO L276 IsEmpty]: Start isEmpty. Operand 5373 states and 6676 transitions. [2020-10-26 22:46:24,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-26 22:46:24,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:24,202 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1] [2020-10-26 22:46:24,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 22:46:24,202 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:24,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:24,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1447988929, now seen corresponding path program 1 times [2020-10-26 22:46:24,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:24,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415501643] [2020-10-26 22:46:24,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:24,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:24,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:24,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:26,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:26,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-26 22:46:26,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:46:26,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2349 [2020-10-26 22:46:26,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:26,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:26,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:46:26,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:46:26,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:26,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:26,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:26,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:26,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:26,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:26,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:46:26,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:26,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:26,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:26,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:26,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:26,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:26,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:27,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:27,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:46:27,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:27,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-26 22:46:27,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:27,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:27,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:46:27,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:46:27,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:46:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:27,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:27,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:27,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 22:46:27,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:27,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 22:46:27,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:27,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:27,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:46:27,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:27,319 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:46:27,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415501643] [2020-10-26 22:46:27,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:27,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:46:27,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423583843] [2020-10-26 22:46:27,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:46:27,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:27,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:46:27,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:46:27,322 INFO L87 Difference]: Start difference. First operand 5373 states and 6676 transitions. Second operand 7 states. [2020-10-26 22:46:31,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:31,489 INFO L93 Difference]: Finished difference Result 12348 states and 15834 transitions. [2020-10-26 22:46:31,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:46:31,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-10-26 22:46:31,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:31,532 INFO L225 Difference]: With dead ends: 12348 [2020-10-26 22:46:31,533 INFO L226 Difference]: Without dead ends: 7359 [2020-10-26 22:46:31,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:46:31,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7359 states. [2020-10-26 22:46:31,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7359 to 7337. [2020-10-26 22:46:31,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7337 states. [2020-10-26 22:46:31,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7337 states to 7337 states and 9022 transitions. [2020-10-26 22:46:31,746 INFO L78 Accepts]: Start accepts. Automaton has 7337 states and 9022 transitions. Word has length 252 [2020-10-26 22:46:31,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:31,746 INFO L481 AbstractCegarLoop]: Abstraction has 7337 states and 9022 transitions. [2020-10-26 22:46:31,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:46:31,747 INFO L276 IsEmpty]: Start isEmpty. Operand 7337 states and 9022 transitions. [2020-10-26 22:46:31,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-26 22:46:31,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:31,754 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:46:31,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 22:46:31,754 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:31,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:31,755 INFO L82 PathProgramCache]: Analyzing trace with hash -58451911, now seen corresponding path program 1 times [2020-10-26 22:46:31,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:31,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696910562] [2020-10-26 22:46:31,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:31,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:31,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:33,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:33,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-26 22:46:33,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:46:33,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1742 [2020-10-26 22:46:33,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:33,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:33,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:46:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:46:33,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:46:33,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:33,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:33,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:33,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:33,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:33,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:46:33,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:33,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:33,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:33,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:33,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:33,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:46:33,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:33,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-26 22:46:33,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:33,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:33,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:33,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:46:33,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:33,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:46:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:33,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:34,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:34,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:46:34,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:34,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-26 22:46:34,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:34,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:34,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:34,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:46:34,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:46:34,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696910562] [2020-10-26 22:46:34,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:34,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:46:34,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4480987] [2020-10-26 22:46:34,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:46:34,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:34,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:46:34,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:46:34,258 INFO L87 Difference]: Start difference. First operand 7337 states and 9022 transitions. Second operand 7 states. [2020-10-26 22:46:38,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:38,841 INFO L93 Difference]: Finished difference Result 16241 states and 20100 transitions. [2020-10-26 22:46:38,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:46:38,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-10-26 22:46:38,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:38,877 INFO L225 Difference]: With dead ends: 16241 [2020-10-26 22:46:38,878 INFO L226 Difference]: Without dead ends: 9294 [2020-10-26 22:46:38,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:46:38,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9294 states. [2020-10-26 22:46:39,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9294 to 8695. [2020-10-26 22:46:39,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8695 states. [2020-10-26 22:46:39,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8695 states to 8695 states and 10618 transitions. [2020-10-26 22:46:39,131 INFO L78 Accepts]: Start accepts. Automaton has 8695 states and 10618 transitions. Word has length 256 [2020-10-26 22:46:39,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:39,132 INFO L481 AbstractCegarLoop]: Abstraction has 8695 states and 10618 transitions. [2020-10-26 22:46:39,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:46:39,132 INFO L276 IsEmpty]: Start isEmpty. Operand 8695 states and 10618 transitions. [2020-10-26 22:46:39,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-26 22:46:39,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:39,139 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:46:39,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 22:46:39,140 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:39,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:39,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1563384093, now seen corresponding path program 1 times [2020-10-26 22:46:39,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:39,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246915382] [2020-10-26 22:46:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:39,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:39,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:39,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:40,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:42,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:44,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:44,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-26 22:46:44,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:46:44,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4880 [2020-10-26 22:46:44,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:44,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:46:44,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:46:44,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 22:46:44,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:44,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:44,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:44,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:44,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:44,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:44,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 22:46:44,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:44,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:44,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:44,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:46:44,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:44,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:44,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:44,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:44,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:44,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:46:44,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:46:44,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-26 22:46:44,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:44,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:44,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 22:46:44,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:44,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:46:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:44,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:44,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:44,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:46:44,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:44,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 22:46:44,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-26 22:46:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:44,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:44,898 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 88 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 22:46:44,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246915382] [2020-10-26 22:46:44,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:44,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:46:44,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682754494] [2020-10-26 22:46:44,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:46:44,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:44,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:46:44,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:46:44,901 INFO L87 Difference]: Start difference. First operand 8695 states and 10618 transitions. Second operand 7 states. [2020-10-26 22:46:48,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:48,354 INFO L93 Difference]: Finished difference Result 18905 states and 23796 transitions. [2020-10-26 22:46:48,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 22:46:48,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-10-26 22:46:48,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:48,391 INFO L225 Difference]: With dead ends: 18905 [2020-10-26 22:46:48,391 INFO L226 Difference]: Without dead ends: 10602 [2020-10-26 22:46:48,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:46:48,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10602 states. [2020-10-26 22:46:48,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10602 to 10017. [2020-10-26 22:46:48,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10017 states. [2020-10-26 22:46:48,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10017 states to 10017 states and 12216 transitions. [2020-10-26 22:46:48,657 INFO L78 Accepts]: Start accepts. Automaton has 10017 states and 12216 transitions. Word has length 257 [2020-10-26 22:46:48,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:48,658 INFO L481 AbstractCegarLoop]: Abstraction has 10017 states and 12216 transitions. [2020-10-26 22:46:48,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:46:48,658 INFO L276 IsEmpty]: Start isEmpty. Operand 10017 states and 12216 transitions. [2020-10-26 22:46:48,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-26 22:46:48,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:48,667 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:46:48,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 22:46:48,667 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:48,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:48,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1273008422, now seen corresponding path program 1 times [2020-10-26 22:46:48,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:48,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249295525] [2020-10-26 22:46:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:48,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:48,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:49,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:50,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:50,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 22:46:50,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:46:50,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1888 [2020-10-26 22:46:50,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:50,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 22:46:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:46:50,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:50,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:50,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:50,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:50,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:50,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:50,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:46:50,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:50,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:50,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:50,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:50,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:50,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:50,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:50,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:46:50,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:50,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-26 22:46:50,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:50,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:50,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:50,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 22:46:50,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:50,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-26 22:46:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:51,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:51,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:51,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:46:51,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:51,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-26 22:46:51,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:51,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:51,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:51,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:46:51,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:51,396 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:46:51,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249295525] [2020-10-26 22:46:51,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:51,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:46:51,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960596302] [2020-10-26 22:46:51,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:46:51,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:51,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:46:51,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:46:51,398 INFO L87 Difference]: Start difference. First operand 10017 states and 12216 transitions. Second operand 7 states. [2020-10-26 22:46:54,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:54,902 INFO L93 Difference]: Finished difference Result 21022 states and 25803 transitions. [2020-10-26 22:46:54,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 22:46:54,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-10-26 22:46:54,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:54,941 INFO L225 Difference]: With dead ends: 21022 [2020-10-26 22:46:54,941 INFO L226 Difference]: Without dead ends: 11205 [2020-10-26 22:46:54,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:46:54,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11205 states. [2020-10-26 22:46:55,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11205 to 10595. [2020-10-26 22:46:55,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10595 states. [2020-10-26 22:46:55,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10595 states to 10595 states and 12884 transitions. [2020-10-26 22:46:55,212 INFO L78 Accepts]: Start accepts. Automaton has 10595 states and 12884 transitions. Word has length 273 [2020-10-26 22:46:55,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:55,213 INFO L481 AbstractCegarLoop]: Abstraction has 10595 states and 12884 transitions. [2020-10-26 22:46:55,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:46:55,213 INFO L276 IsEmpty]: Start isEmpty. Operand 10595 states and 12884 transitions. [2020-10-26 22:46:55,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-26 22:46:55,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:55,297 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1] [2020-10-26 22:46:55,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 22:46:55,297 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:55,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:55,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1962726101, now seen corresponding path program 1 times [2020-10-26 22:46:55,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:55,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561323551] [2020-10-26 22:46:55,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:55,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:55,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:55,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:57,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:57,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-26 22:46:57,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:46:57,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2212 [2020-10-26 22:46:57,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:57,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:46:57,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:46:57,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-26 22:46:57,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:57,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:57,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:57,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:57,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:57,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:57,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 22:46:57,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:57,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:57,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:57,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:46:57,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:57,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:57,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:57,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:57,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:46:57,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:57,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-26 22:46:57,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:57,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:46:57,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:57,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 22:46:57,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:58,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:46:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:58,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:58,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:58,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 22:46:58,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:58,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 22:46:58,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:58,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:58,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:58,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 22:46:58,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:58,334 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 84 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 22:46:58,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561323551] [2020-10-26 22:46:58,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:58,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:46:58,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171795977] [2020-10-26 22:46:58,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:46:58,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:58,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:46:58,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:46:58,337 INFO L87 Difference]: Start difference. First operand 10595 states and 12884 transitions. Second operand 9 states. [2020-10-26 22:46:59,343 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-26 22:47:01,002 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-26 22:47:03,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:03,483 INFO L93 Difference]: Finished difference Result 21417 states and 26778 transitions. [2020-10-26 22:47:03,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 22:47:03,484 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 274 [2020-10-26 22:47:03,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:03,527 INFO L225 Difference]: With dead ends: 21417 [2020-10-26 22:47:03,527 INFO L226 Difference]: Without dead ends: 12766 [2020-10-26 22:47:03,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-26 22:47:03,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12766 states. [2020-10-26 22:47:03,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12766 to 12737. [2020-10-26 22:47:03,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12737 states. [2020-10-26 22:47:03,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12737 states to 12737 states and 15526 transitions. [2020-10-26 22:47:03,812 INFO L78 Accepts]: Start accepts. Automaton has 12737 states and 15526 transitions. Word has length 274 [2020-10-26 22:47:03,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:03,812 INFO L481 AbstractCegarLoop]: Abstraction has 12737 states and 15526 transitions. [2020-10-26 22:47:03,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:47:03,813 INFO L276 IsEmpty]: Start isEmpty. Operand 12737 states and 15526 transitions. [2020-10-26 22:47:03,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-26 22:47:03,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:03,820 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:47:03,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 22:47:03,820 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:03,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:03,821 INFO L82 PathProgramCache]: Analyzing trace with hash -884716056, now seen corresponding path program 1 times [2020-10-26 22:47:03,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:03,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204493590] [2020-10-26 22:47:03,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:03,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:04,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:04,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:05,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:07,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:07,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-26 22:47:07,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:47:07,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3739 [2020-10-26 22:47:07,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:07,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:47:07,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:47:07,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-26 22:47:07,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:07,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:07,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:07,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:07,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:07,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:07,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 22:47:07,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:07,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:07,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:47:07,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:07,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:07,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:08,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:08,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-26 22:47:08,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:08,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-26 22:47:08,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:08,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:08,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:08,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 22:47:08,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:08,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-26 22:47:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:08,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:08,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:08,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:47:08,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:08,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 22:47:08,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:47:08,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 89 proven. 69 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 22:47:08,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204493590] [2020-10-26 22:47:08,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:47:08,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:47:08,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059691583] [2020-10-26 22:47:08,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:47:08,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:08,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:47:08,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:47:08,590 INFO L87 Difference]: Start difference. First operand 12737 states and 15526 transitions. Second operand 8 states. [2020-10-26 22:47:11,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:11,618 INFO L93 Difference]: Finished difference Result 22977 states and 28208 transitions. [2020-10-26 22:47:11,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:47:11,619 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 297 [2020-10-26 22:47:11,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:11,656 INFO L225 Difference]: With dead ends: 22977 [2020-10-26 22:47:11,656 INFO L226 Difference]: Without dead ends: 12750 [2020-10-26 22:47:11,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:47:11,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12750 states. [2020-10-26 22:47:11,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12750 to 12727. [2020-10-26 22:47:11,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12727 states. [2020-10-26 22:47:11,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12727 states to 12727 states and 15511 transitions. [2020-10-26 22:47:11,930 INFO L78 Accepts]: Start accepts. Automaton has 12727 states and 15511 transitions. Word has length 297 [2020-10-26 22:47:11,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:11,931 INFO L481 AbstractCegarLoop]: Abstraction has 12727 states and 15511 transitions. [2020-10-26 22:47:11,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:47:11,931 INFO L276 IsEmpty]: Start isEmpty. Operand 12727 states and 15511 transitions. [2020-10-26 22:47:11,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-26 22:47:11,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:11,941 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:47:11,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 22:47:11,942 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:11,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:11,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1672071557, now seen corresponding path program 1 times [2020-10-26 22:47:11,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:11,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181314210] [2020-10-26 22:47:11,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:12,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:12,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:12,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:13,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:16,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:16,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-26 22:47:16,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:47:16,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4496 [2020-10-26 22:47:16,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:47:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:47:16,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:16,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:16,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:16,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:16,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:16,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:16,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:47:16,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:16,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:16,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:16,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:16,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:16,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:16,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:16,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:16,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:47:16,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:16,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-26 22:47:16,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:16,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:16,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:16,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:47:16,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:16,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:47:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:16,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:16,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:16,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 22:47:16,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:16,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 22:47:16,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 22:47:16,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:17,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-26 22:47:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:17,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:17,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:17,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:47:17,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:17,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 22:47:17,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-26 22:47:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:17,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:17,144 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 203 proven. 69 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-26 22:47:17,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181314210] [2020-10-26 22:47:17,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:47:17,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:47:17,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543701334] [2020-10-26 22:47:17,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:47:17,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:17,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:47:17,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:47:17,147 INFO L87 Difference]: Start difference. First operand 12727 states and 15511 transitions. Second operand 7 states. [2020-10-26 22:47:20,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:20,636 INFO L93 Difference]: Finished difference Result 26283 states and 31960 transitions. [2020-10-26 22:47:20,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:47:20,637 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 327 [2020-10-26 22:47:20,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:20,671 INFO L225 Difference]: With dead ends: 26283 [2020-10-26 22:47:20,671 INFO L226 Difference]: Without dead ends: 13940 [2020-10-26 22:47:20,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:47:20,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13940 states. [2020-10-26 22:47:20,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13940 to 13909. [2020-10-26 22:47:20,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13909 states. [2020-10-26 22:47:21,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13909 states to 13909 states and 16670 transitions. [2020-10-26 22:47:21,001 INFO L78 Accepts]: Start accepts. Automaton has 13909 states and 16670 transitions. Word has length 327 [2020-10-26 22:47:21,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:21,001 INFO L481 AbstractCegarLoop]: Abstraction has 13909 states and 16670 transitions. [2020-10-26 22:47:21,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:47:21,002 INFO L276 IsEmpty]: Start isEmpty. Operand 13909 states and 16670 transitions. [2020-10-26 22:47:21,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-26 22:47:21,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:21,014 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:47:21,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 22:47:21,017 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:21,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:21,018 INFO L82 PathProgramCache]: Analyzing trace with hash 229326058, now seen corresponding path program 1 times [2020-10-26 22:47:21,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:21,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170850550] [2020-10-26 22:47:21,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:21,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:21,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:21,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:23,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:23,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-26 22:47:23,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:47:23,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2228 [2020-10-26 22:47:23,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:23,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:23,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-26 22:47:23,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:47:23,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:23,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:23,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:23,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:23,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:23,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:23,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:47:23,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:23,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:23,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:23,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:23,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:23,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:23,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:23,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:23,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:47:23,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:23,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 22:47:23,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:23,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:23,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:23,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:23,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:23,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:47:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:23,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:23,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:23,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:47:23,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:23,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 22:47:23,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:23,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:23,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:23,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:47:23,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:23,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:47:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:23,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:23,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:23,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:47:23,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:23,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 22:47:23,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:23,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:23,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:23,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:47:23,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:24,001 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 279 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-26 22:47:24,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170850550] [2020-10-26 22:47:24,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:47:24,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:47:24,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420820729] [2020-10-26 22:47:24,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:47:24,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:24,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:47:24,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:47:24,003 INFO L87 Difference]: Start difference. First operand 13909 states and 16670 transitions. Second operand 7 states. [2020-10-26 22:47:27,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:27,646 INFO L93 Difference]: Finished difference Result 25527 states and 30764 transitions. [2020-10-26 22:47:27,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:47:27,648 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 338 [2020-10-26 22:47:27,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:27,679 INFO L225 Difference]: With dead ends: 25527 [2020-10-26 22:47:27,679 INFO L226 Difference]: Without dead ends: 14128 [2020-10-26 22:47:27,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:47:27,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14128 states. [2020-10-26 22:47:28,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14128 to 14097. [2020-10-26 22:47:28,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14097 states. [2020-10-26 22:47:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14097 states to 14097 states and 16891 transitions. [2020-10-26 22:47:28,062 INFO L78 Accepts]: Start accepts. Automaton has 14097 states and 16891 transitions. Word has length 338 [2020-10-26 22:47:28,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:28,063 INFO L481 AbstractCegarLoop]: Abstraction has 14097 states and 16891 transitions. [2020-10-26 22:47:28,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:47:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 14097 states and 16891 transitions. [2020-10-26 22:47:28,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-26 22:47:28,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:28,074 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:47:28,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 22:47:28,075 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:28,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:28,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1485366666, now seen corresponding path program 1 times [2020-10-26 22:47:28,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:28,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134508314] [2020-10-26 22:47:28,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:28,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:28,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:28,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:28,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:30,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:30,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-26 22:47:30,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:47:30,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2775 [2020-10-26 22:47:30,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:30,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:30,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-26 22:47:30,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:47:30,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:31,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:31,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:31,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:31,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:31,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:31,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:47:31,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:31,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:31,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:31,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:31,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:31,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:31,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:31,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:31,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:47:31,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:31,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 22:47:31,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:31,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:31,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:31,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:31,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:31,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:47:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:31,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:31,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:31,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 22:47:31,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:31,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 22:47:31,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 22:47:31,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:31,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-26 22:47:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:31,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:31,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:31,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:47:31,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:31,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 22:47:31,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:47:31,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:31,622 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 279 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-26 22:47:31,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134508314] [2020-10-26 22:47:31,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:47:31,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:47:31,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623624396] [2020-10-26 22:47:31,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:47:31,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:31,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:47:31,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:47:31,624 INFO L87 Difference]: Start difference. First operand 14097 states and 16891 transitions. Second operand 7 states. [2020-10-26 22:47:36,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:36,331 INFO L93 Difference]: Finished difference Result 27415 states and 32979 transitions. [2020-10-26 22:47:36,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 22:47:36,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 353 [2020-10-26 22:47:36,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:36,355 INFO L225 Difference]: With dead ends: 27415 [2020-10-26 22:47:36,355 INFO L226 Difference]: Without dead ends: 13902 [2020-10-26 22:47:36,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:47:36,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13902 states. [2020-10-26 22:47:36,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13902 to 13491. [2020-10-26 22:47:36,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13491 states. [2020-10-26 22:47:36,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13491 states to 13491 states and 15859 transitions. [2020-10-26 22:47:36,614 INFO L78 Accepts]: Start accepts. Automaton has 13491 states and 15859 transitions. Word has length 353 [2020-10-26 22:47:36,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:36,615 INFO L481 AbstractCegarLoop]: Abstraction has 13491 states and 15859 transitions. [2020-10-26 22:47:36,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:47:36,615 INFO L276 IsEmpty]: Start isEmpty. Operand 13491 states and 15859 transitions. [2020-10-26 22:47:36,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-26 22:47:36,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:36,624 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:47:36,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 22:47:36,624 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:36,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:36,625 INFO L82 PathProgramCache]: Analyzing trace with hash -865699369, now seen corresponding path program 1 times [2020-10-26 22:47:36,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:36,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706468477] [2020-10-26 22:47:36,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:36,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:37,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:37,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-26 22:47:37,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:37,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-26 22:47:37,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:37,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-26 22:47:37,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 22:47:37,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:37,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:37,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:37,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:37,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:37,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:37,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:47:37,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:37,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:37,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:37,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:37,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:37,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:37,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:37,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:37,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:47:37,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:37,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 22:47:37,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:37,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:37,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:37,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:37,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:37,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:47:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:37,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:37,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:37,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-26 22:47:37,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:37,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 22:47:37,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:37,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:37,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:37,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-26 22:47:37,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-26 22:47:37,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706468477] [2020-10-26 22:47:37,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:47:37,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:47:37,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570296716] [2020-10-26 22:47:37,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:47:37,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:37,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:47:37,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:47:37,653 INFO L87 Difference]: Start difference. First operand 13491 states and 15859 transitions. Second operand 5 states. [2020-10-26 22:47:40,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:40,457 INFO L93 Difference]: Finished difference Result 29512 states and 35170 transitions. [2020-10-26 22:47:40,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:47:40,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 358 [2020-10-26 22:47:40,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:40,492 INFO L225 Difference]: With dead ends: 29512 [2020-10-26 22:47:40,492 INFO L226 Difference]: Without dead ends: 16213 [2020-10-26 22:47:40,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:47:40,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16213 states. [2020-10-26 22:47:40,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16213 to 15990. [2020-10-26 22:47:40,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15990 states. [2020-10-26 22:47:40,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15990 states to 15990 states and 19016 transitions. [2020-10-26 22:47:40,809 INFO L78 Accepts]: Start accepts. Automaton has 15990 states and 19016 transitions. Word has length 358 [2020-10-26 22:47:40,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:40,810 INFO L481 AbstractCegarLoop]: Abstraction has 15990 states and 19016 transitions. [2020-10-26 22:47:40,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:47:40,810 INFO L276 IsEmpty]: Start isEmpty. Operand 15990 states and 19016 transitions. [2020-10-26 22:47:40,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-26 22:47:40,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:40,826 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2020-10-26 22:47:40,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 22:47:40,826 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:40,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:40,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1653608275, now seen corresponding path program 1 times [2020-10-26 22:47:40,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:40,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825200057] [2020-10-26 22:47:40,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:40,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:41,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:41,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:41,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-26 22:47:41,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:47:41,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 863 [2020-10-26 22:47:41,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-26 22:47:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:47:41,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:41,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:41,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:41,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:41,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:41,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:41,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:47:41,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:41,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:41,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:41,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:41,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:41,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:41,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:41,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:41,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:47:41,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:41,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 22:47:41,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:41,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:41,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:41,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:41,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:41,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:47:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:42,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:42,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:42,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 22:47:42,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:42,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 22:47:42,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-26 22:47:42,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:42,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-26 22:47:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:42,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:42,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:42,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-26 22:47:42,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:42,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 22:47:42,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:42,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:42,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:42,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-26 22:47:42,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:42,317 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 273 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-26 22:47:42,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825200057] [2020-10-26 22:47:42,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:47:42,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:47:42,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136643717] [2020-10-26 22:47:42,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:47:42,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:42,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:47:42,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:47:42,319 INFO L87 Difference]: Start difference. First operand 15990 states and 19016 transitions. Second operand 7 states. [2020-10-26 22:47:46,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:46,096 INFO L93 Difference]: Finished difference Result 33563 states and 40087 transitions. [2020-10-26 22:47:46,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:47:46,098 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-10-26 22:47:46,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:46,128 INFO L225 Difference]: With dead ends: 33563 [2020-10-26 22:47:46,128 INFO L226 Difference]: Without dead ends: 17957 [2020-10-26 22:47:46,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:47:46,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17957 states. [2020-10-26 22:47:46,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17957 to 17908. [2020-10-26 22:47:46,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17908 states. [2020-10-26 22:47:46,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17908 states to 17908 states and 21134 transitions. [2020-10-26 22:47:46,419 INFO L78 Accepts]: Start accepts. Automaton has 17908 states and 21134 transitions. Word has length 392 [2020-10-26 22:47:46,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:46,419 INFO L481 AbstractCegarLoop]: Abstraction has 17908 states and 21134 transitions. [2020-10-26 22:47:46,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:47:46,419 INFO L276 IsEmpty]: Start isEmpty. Operand 17908 states and 21134 transitions. [2020-10-26 22:47:46,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-26 22:47:46,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:46,430 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:47:46,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 22:47:46,430 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:46,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:46,431 INFO L82 PathProgramCache]: Analyzing trace with hash 201913168, now seen corresponding path program 1 times [2020-10-26 22:47:46,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:46,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001454391] [2020-10-26 22:47:46,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:46,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:46,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:47,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:49,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:49,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-26 22:47:49,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:47:49,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3461 [2020-10-26 22:47:49,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-26 22:47:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:47:49,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:50,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:50,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:50,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:50,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:50,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:50,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 22:47:50,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:50,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:50,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:50,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:50,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:50,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:50,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:50,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:47:50,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 22:47:50,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:50,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:50,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-26 22:47:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:50,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:50,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:50,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-26 22:47:50,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:50,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 22:47:50,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:50,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:50,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:50,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:47:50,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:50,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-26 22:47:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:50,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:50,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:50,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:47:50,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:50,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-26 22:47:50,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:50,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:50,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:50,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:47:50,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 279 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-26 22:47:50,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001454391] [2020-10-26 22:47:50,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:47:50,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:47:50,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766029698] [2020-10-26 22:47:50,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:47:50,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:50,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:47:50,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:47:50,774 INFO L87 Difference]: Start difference. First operand 17908 states and 21134 transitions. Second operand 7 states. [2020-10-26 22:47:54,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:54,322 INFO L93 Difference]: Finished difference Result 35675 states and 42089 transitions. [2020-10-26 22:47:54,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:47:54,323 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 395 [2020-10-26 22:47:54,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:54,370 INFO L225 Difference]: With dead ends: 35675 [2020-10-26 22:47:54,370 INFO L226 Difference]: Without dead ends: 17959 [2020-10-26 22:47:54,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:47:54,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17959 states. [2020-10-26 22:47:54,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17959 to 17906. [2020-10-26 22:47:54,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17906 states. [2020-10-26 22:47:54,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17906 states to 17906 states and 20870 transitions. [2020-10-26 22:47:54,668 INFO L78 Accepts]: Start accepts. Automaton has 17906 states and 20870 transitions. Word has length 395 [2020-10-26 22:47:54,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:54,668 INFO L481 AbstractCegarLoop]: Abstraction has 17906 states and 20870 transitions. [2020-10-26 22:47:54,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:47:54,668 INFO L276 IsEmpty]: Start isEmpty. Operand 17906 states and 20870 transitions. [2020-10-26 22:47:54,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-10-26 22:47:54,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:54,682 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2020-10-26 22:47:54,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 22:47:54,682 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:54,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:54,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1161244893, now seen corresponding path program 1 times [2020-10-26 22:47:54,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:54,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911874364] [2020-10-26 22:47:54,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:54,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:54,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:56,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:57,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:57,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-10-26 22:47:57,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:47:57,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2658 [2020-10-26 22:47:57,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:57,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 22:47:57,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:47:57,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-26 22:47:57,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:57,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:57,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:57,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:57,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:57,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:57,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:47:57,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:57,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:57,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:57,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:57,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:57,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:57,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:57,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:57,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:47:57,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:57,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 22:47:57,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:57,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:57,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:57,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:47:57,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:57,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:47:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:57,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:57,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:57,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 22:47:57,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:57,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-26 22:47:57,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:57,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:57,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:57,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-26 22:47:57,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:57,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-26 22:47:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:58,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:58,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:58,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:47:58,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:58,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 22:47:58,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:58,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:47:58,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:58,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:47:58,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:58,538 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 258 proven. 97 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-26 22:47:58,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911874364] [2020-10-26 22:47:58,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:47:58,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:47:58,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898171083] [2020-10-26 22:47:58,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:47:58,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:58,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:47:58,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:47:58,558 INFO L87 Difference]: Start difference. First operand 17906 states and 20870 transitions. Second operand 8 states. [2020-10-26 22:47:59,875 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-26 22:48:03,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:48:03,904 INFO L93 Difference]: Finished difference Result 33558 states and 40512 transitions. [2020-10-26 22:48:03,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 22:48:03,909 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 415 [2020-10-26 22:48:03,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:48:03,978 INFO L225 Difference]: With dead ends: 33558 [2020-10-26 22:48:03,978 INFO L226 Difference]: Without dead ends: 18158 [2020-10-26 22:48:04,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-26 22:48:04,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18158 states. [2020-10-26 22:48:04,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18158 to 17888. [2020-10-26 22:48:04,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17888 states. [2020-10-26 22:48:04,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17888 states to 17888 states and 20344 transitions. [2020-10-26 22:48:04,397 INFO L78 Accepts]: Start accepts. Automaton has 17888 states and 20344 transitions. Word has length 415 [2020-10-26 22:48:04,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:48:04,398 INFO L481 AbstractCegarLoop]: Abstraction has 17888 states and 20344 transitions. [2020-10-26 22:48:04,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:48:04,398 INFO L276 IsEmpty]: Start isEmpty. Operand 17888 states and 20344 transitions. [2020-10-26 22:48:04,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-10-26 22:48:04,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:48:04,416 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2020-10-26 22:48:04,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 22:48:04,417 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:48:04,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:48:04,417 INFO L82 PathProgramCache]: Analyzing trace with hash -607169633, now seen corresponding path program 1 times [2020-10-26 22:48:04,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:48:04,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246148071] [2020-10-26 22:48:04,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:48:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:04,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:04,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:06,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:07,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:07,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 492 [2020-10-26 22:48:07,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:48:07,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3346 [2020-10-26 22:48:07,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:07,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 22:48:07,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:48:07,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 444 [2020-10-26 22:48:07,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:08,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:48:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:08,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:08,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:08,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:48:08,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:08,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:48:08,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:08,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:48:08,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:08,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:48:08,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:08,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:48:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:08,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:08,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:08,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-26 22:48:08,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:08,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-26 22:48:08,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:08,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:08,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:48:08,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 22:48:08,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:08,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-26 22:48:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:08,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:08,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:08,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 22:48:08,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:08,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-26 22:48:08,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:08,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:48:08,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:48:08,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-26 22:48:08,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:09,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-26 22:48:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:09,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:09,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:09,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:48:09,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:09,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-26 22:48:09,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:09,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:48:09,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:48:09,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:48:09,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 117 proven. 356 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-26 22:48:10,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246148071] [2020-10-26 22:48:10,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:48:10,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 22:48:10,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11554423] [2020-10-26 22:48:10,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 22:48:10,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:48:10,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 22:48:10,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:48:10,271 INFO L87 Difference]: Start difference. First operand 17888 states and 20344 transitions. Second operand 12 states. [2020-10-26 22:48:12,353 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-26 22:48:14,292 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-26 22:48:16,623 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-10-26 22:48:17,040 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2020-10-26 22:48:18,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:48:18,695 INFO L93 Difference]: Finished difference Result 36045 states and 41099 transitions. [2020-10-26 22:48:18,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-26 22:48:18,696 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 476 [2020-10-26 22:48:18,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:48:18,729 INFO L225 Difference]: With dead ends: 36045 [2020-10-26 22:48:18,730 INFO L226 Difference]: Without dead ends: 18335 [2020-10-26 22:48:18,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2020-10-26 22:48:18,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18335 states. [2020-10-26 22:48:19,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18335 to 18276. [2020-10-26 22:48:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18276 states. [2020-10-26 22:48:19,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18276 states to 18276 states and 20772 transitions. [2020-10-26 22:48:19,071 INFO L78 Accepts]: Start accepts. Automaton has 18276 states and 20772 transitions. Word has length 476 [2020-10-26 22:48:19,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:48:19,072 INFO L481 AbstractCegarLoop]: Abstraction has 18276 states and 20772 transitions. [2020-10-26 22:48:19,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 22:48:19,072 INFO L276 IsEmpty]: Start isEmpty. Operand 18276 states and 20772 transitions. [2020-10-26 22:48:19,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2020-10-26 22:48:19,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:48:19,092 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2020-10-26 22:48:19,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 22:48:19,092 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:48:19,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:48:19,093 INFO L82 PathProgramCache]: Analyzing trace with hash -436208241, now seen corresponding path program 1 times [2020-10-26 22:48:19,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:48:19,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003532575] [2020-10-26 22:48:19,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:48:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:19,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:19,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:19,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:21,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:24,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:24,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 498 [2020-10-26 22:48:24,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:48:24,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 22:48:24,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-26 22:48:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:48:24,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:24,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:48:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:24,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:24,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:24,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:48:24,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:24,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:48:24,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:24,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:24,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:24,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:24,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:24,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:48:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:24,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:24,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:24,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:48:24,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:24,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 22:48:24,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:24,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:24,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:48:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:24,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:24,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:24,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 22:48:24,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:24,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 22:48:24,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:24,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:48:24,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:24,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-26 22:48:24,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:24,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-26 22:48:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:24,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:24,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:24,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 22:48:24,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:24,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 22:48:24,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:48:24,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 22:48:24,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:24,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-26 22:48:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:24,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:24,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:24,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:48:24,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:24,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 22:48:24,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-26 22:48:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:24,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:24,961 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 323 proven. 69 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-26 22:48:24,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003532575] [2020-10-26 22:48:24,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:48:24,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:48:24,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686444458] [2020-10-26 22:48:24,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:48:24,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:48:24,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:48:24,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:48:24,963 INFO L87 Difference]: Start difference. First operand 18276 states and 20772 transitions. Second operand 7 states. [2020-10-26 22:48:29,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:48:29,206 INFO L93 Difference]: Finished difference Result 36621 states and 42291 transitions. [2020-10-26 22:48:29,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:48:29,208 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 480 [2020-10-26 22:48:29,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:48:29,270 INFO L225 Difference]: With dead ends: 36621 [2020-10-26 22:48:29,270 INFO L226 Difference]: Without dead ends: 19115 [2020-10-26 22:48:29,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:48:29,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19115 states. [2020-10-26 22:48:29,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19115 to 18842. [2020-10-26 22:48:29,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18842 states. [2020-10-26 22:48:29,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18842 states to 18842 states and 21331 transitions. [2020-10-26 22:48:29,788 INFO L78 Accepts]: Start accepts. Automaton has 18842 states and 21331 transitions. Word has length 480 [2020-10-26 22:48:29,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:48:29,789 INFO L481 AbstractCegarLoop]: Abstraction has 18842 states and 21331 transitions. [2020-10-26 22:48:29,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:48:29,789 INFO L276 IsEmpty]: Start isEmpty. Operand 18842 states and 21331 transitions. [2020-10-26 22:48:29,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2020-10-26 22:48:29,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:48:29,813 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:48:29,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 22:48:29,813 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:48:29,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:48:29,814 INFO L82 PathProgramCache]: Analyzing trace with hash -288357620, now seen corresponding path program 1 times [2020-10-26 22:48:29,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:48:29,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170841915] [2020-10-26 22:48:29,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:48:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:30,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:30,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:30,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:30,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:30,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:30,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:31,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:31,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:31,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-10-26 22:48:31,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 22:48:31,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1920 [2020-10-26 22:48:31,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:31,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:48:31,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:48:31,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-26 22:48:31,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:31,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:48:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:31,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:32,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:32,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:48:32,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:32,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:48:32,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:32,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:48:32,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:32,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:48:32,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:32,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:48:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:32,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:32,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:32,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:32,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:48:32,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:48:32,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-26 22:48:32,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:32,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:48:32,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:32,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 22:48:32,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:32,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:48:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:32,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:32,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:32,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:32,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 22:48:32,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:48:32,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 22:48:32,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:48:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-26 22:48:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:48:32,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:32,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-26 22:48:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:32,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:32,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:32,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-26 22:48:32,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:32,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 22:48:32,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-26 22:48:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:32,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 139 proven. 4 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2020-10-26 22:48:32,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170841915] [2020-10-26 22:48:32,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:48:32,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:48:32,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186320876] [2020-10-26 22:48:32,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:48:32,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:48:32,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:48:32,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:48:32,635 INFO L87 Difference]: Start difference. First operand 18842 states and 21331 transitions. Second operand 5 states. [2020-10-26 22:48:34,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:48:34,639 INFO L93 Difference]: Finished difference Result 32704 states and 36986 transitions. [2020-10-26 22:48:34,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:48:34,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 483 [2020-10-26 22:48:34,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:48:34,673 INFO L225 Difference]: With dead ends: 32704 [2020-10-26 22:48:34,673 INFO L226 Difference]: Without dead ends: 17520 [2020-10-26 22:48:34,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:48:34,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17520 states. [2020-10-26 22:48:35,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17520 to 17450. [2020-10-26 22:48:35,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17450 states. [2020-10-26 22:48:35,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17450 states to 17450 states and 19534 transitions. [2020-10-26 22:48:35,038 INFO L78 Accepts]: Start accepts. Automaton has 17450 states and 19534 transitions. Word has length 483 [2020-10-26 22:48:35,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:48:35,038 INFO L481 AbstractCegarLoop]: Abstraction has 17450 states and 19534 transitions. [2020-10-26 22:48:35,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:48:35,039 INFO L276 IsEmpty]: Start isEmpty. Operand 17450 states and 19534 transitions. [2020-10-26 22:48:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-10-26 22:48:35,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:48:35,048 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:48:35,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-26 22:48:35,048 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:48:35,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:48:35,049 INFO L82 PathProgramCache]: Analyzing trace with hash 698672315, now seen corresponding path program 1 times [2020-10-26 22:48:35,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:48:35,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858498196] [2020-10-26 22:48:35,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:48:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:35,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:35,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:35,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 501 [2020-10-26 22:48:35,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:35,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-10-26 22:48:35,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:35,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:35,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 447 [2020-10-26 22:48:35,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-26 22:48:35,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:35,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:48:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:35,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:35,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:35,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:48:35,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:35,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:48:35,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:35,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:35,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:48:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:35,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:35,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:35,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:48:35,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:35,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 22:48:35,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:35,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:35,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:48:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:35,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:35,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:35,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:48:35,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:35,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 22:48:35,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:35,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:35,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:35,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:35,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:36,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 22:48:36,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:36,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:36,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:36,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-26 22:48:36,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:36,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-26 22:48:36,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:36,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:48:36,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:36,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-26 22:48:36,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 135 proven. 3 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2020-10-26 22:48:36,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858498196] [2020-10-26 22:48:36,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:48:36,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:48:36,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779797598] [2020-10-26 22:48:36,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:48:36,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:48:36,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:48:36,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:48:36,557 INFO L87 Difference]: Start difference. First operand 17450 states and 19534 transitions. Second operand 5 states. [2020-10-26 22:48:39,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:48:39,462 INFO L93 Difference]: Finished difference Result 33001 states and 37040 transitions. [2020-10-26 22:48:39,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:48:39,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 485 [2020-10-26 22:48:39,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:48:39,497 INFO L225 Difference]: With dead ends: 33001 [2020-10-26 22:48:39,497 INFO L226 Difference]: Without dead ends: 19209 [2020-10-26 22:48:39,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:48:39,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19209 states. [2020-10-26 22:48:39,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19209 to 18017. [2020-10-26 22:48:39,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18017 states. [2020-10-26 22:48:39,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18017 states to 18017 states and 20205 transitions. [2020-10-26 22:48:39,756 INFO L78 Accepts]: Start accepts. Automaton has 18017 states and 20205 transitions. Word has length 485 [2020-10-26 22:48:39,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:48:39,756 INFO L481 AbstractCegarLoop]: Abstraction has 18017 states and 20205 transitions. [2020-10-26 22:48:39,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:48:39,756 INFO L276 IsEmpty]: Start isEmpty. Operand 18017 states and 20205 transitions. [2020-10-26 22:48:39,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2020-10-26 22:48:39,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:48:39,766 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2020-10-26 22:48:39,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-26 22:48:39,767 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:48:39,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:48:39,767 INFO L82 PathProgramCache]: Analyzing trace with hash 770118696, now seen corresponding path program 1 times [2020-10-26 22:48:39,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:48:39,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579122602] [2020-10-26 22:48:39,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:48:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:39,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:39,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:40,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:41,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:42,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:44,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:44,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 510 [2020-10-26 22:48:44,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:48:44,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-26 22:48:44,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:44,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:48:44,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:48:44,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 357 [2020-10-26 22:48:44,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:45,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:48:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:45,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:45,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:45,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:48:45,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:45,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:48:45,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:45,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:48:45,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:45,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:48:45,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:45,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:48:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:45,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:45,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:45,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:48:45,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:45,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 22:48:45,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:45,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:45,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:48:45,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:48:45,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:45,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:48:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:45,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:45,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:45,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:48:45,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:45,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-26 22:48:45,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:45,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:48:45,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:48:45,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:48:45,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:45,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:48:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:45,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:45,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:45,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:45,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:48:45,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:48:45,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-26 22:48:45,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:48:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-26 22:48:45,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:45,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-26 22:48:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:45,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:45,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:45,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 22:48:45,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:45,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 22:48:45,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:45,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:45,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-26 22:48:45,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:45,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:46,128 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 186 proven. 464 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-26 22:48:46,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579122602] [2020-10-26 22:48:46,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:48:46,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 22:48:46,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410481098] [2020-10-26 22:48:46,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 22:48:46,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:48:46,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 22:48:46,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:48:46,130 INFO L87 Difference]: Start difference. First operand 18017 states and 20205 transitions. Second operand 10 states. [2020-10-26 22:48:46,347 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69