/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:50:54,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:50:54,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:50:55,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:50:55,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:50:55,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:50:55,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:50:55,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:50:55,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:50:55,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:50:55,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:50:55,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:50:55,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:50:55,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:50:55,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:50:55,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:50:55,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:50:55,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:50:55,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:50:55,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:50:55,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:50:55,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:50:55,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:50:55,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:50:55,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:50:55,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:50:55,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:50:55,077 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:50:55,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:50:55,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:50:55,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:50:55,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:50:55,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:50:55,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:50:55,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:50:55,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:50:55,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:50:55,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:50:55,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:50:55,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:50:55,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:50:55,094 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 [2020-10-12 14:50:55,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:50:55,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:50:55,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:50:55,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:50:55,140 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:50:55,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:50:55,140 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:50:55,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:50:55,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:50:55,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:50:55,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:50:55,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:50:55,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:50:55,143 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:50:55,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:50:55,144 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:50:55,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:50:55,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:50:55,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:50:55,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:50:55,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:50:55,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:50:55,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:50:55,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:50:55,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:50:55,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:50:55,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:50:55,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:50:55,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:50:55,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:50:55,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:50:55,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:50:55,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:50:55,545 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:50:55,545 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:50:55,546 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label53.c [2020-10-12 14:50:55,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7af94832/87c5b07b3073462481e9727625f24d76/FLAG41a2a62ce [2020-10-12 14:50:56,417 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:50:56,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label53.c [2020-10-12 14:50:56,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7af94832/87c5b07b3073462481e9727625f24d76/FLAG41a2a62ce [2020-10-12 14:50:56,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7af94832/87c5b07b3073462481e9727625f24d76 [2020-10-12 14:50:56,577 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:50:56,579 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:50:56,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:50:56,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:50:56,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:50:56,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:50:56" (1/1) ... [2020-10-12 14:50:56,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b23df30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:56, skipping insertion in model container [2020-10-12 14:50:56,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:50:56" (1/1) ... [2020-10-12 14:50:56,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:50:56,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:50:58,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:50:58,346 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:50:58,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:50:58,966 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:50:58,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:58 WrapperNode [2020-10-12 14:50:58,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:50:58,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:50:58,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:50:58,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:50:58,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:58" (1/1) ... [2020-10-12 14:50:58,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:58" (1/1) ... [2020-10-12 14:50:59,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:58" (1/1) ... [2020-10-12 14:50:59,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:58" (1/1) ... [2020-10-12 14:50:59,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:58" (1/1) ... [2020-10-12 14:50:59,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:58" (1/1) ... [2020-10-12 14:50:59,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:58" (1/1) ... [2020-10-12 14:50:59,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:50:59,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:50:59,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:50:59,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:50:59,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:58" (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 [2020-10-12 14:50:59,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:50:59,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:50:59,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:50:59,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:50:59,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:50:59,376 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:50:59,376 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:50:59,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:50:59,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:50:59,376 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:50:59,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:50:59,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:50:59,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:51:06,176 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:51:06,177 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:51:06,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:51:06 BoogieIcfgContainer [2020-10-12 14:51:06,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:51:06,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:51:06,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:51:06,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:51:06,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:50:56" (1/3) ... [2020-10-12 14:51:06,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce74c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:51:06, skipping insertion in model container [2020-10-12 14:51:06,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:58" (2/3) ... [2020-10-12 14:51:06,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce74c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:51:06, skipping insertion in model container [2020-10-12 14:51:06,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:51:06" (3/3) ... [2020-10-12 14:51:06,199 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label53.c [2020-10-12 14:51:06,211 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:51:06,225 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:51:06,241 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:51:06,278 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:51:06,279 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:51:06,279 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:51:06,279 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:51:06,279 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:51:06,279 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:51:06,280 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:51:06,280 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:51:06,324 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-12 14:51:06,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 14:51:06,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:51:06,333 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] [2020-10-12 14:51:06,334 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:51:06,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:51:06,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1609559313, now seen corresponding path program 1 times [2020-10-12 14:51:06,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:51:06,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657922234] [2020-10-12 14:51:06,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:51:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:06,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:06,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:06,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 14:51:06,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:06,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-12 14:51:06,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:06,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:51:06,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:51:06,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 14:51:06,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:51:07,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:51:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:07,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:07,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:07,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:51:07,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:07,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 14:51:07,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:07,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:51:07,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:07,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:51:07,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:51:07,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:51:07,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657922234] [2020-10-12 14:51:07,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:51:07,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:51:07,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212129014] [2020-10-12 14:51:07,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:51:07,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:51:07,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:51:07,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:51:07,107 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-12 14:51:18,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:51:18,099 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-12 14:51:18,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:51:18,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-12 14:51:18,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:51:18,132 INFO L225 Difference]: With dead ends: 1689 [2020-10-12 14:51:18,132 INFO L226 Difference]: Without dead ends: 1009 [2020-10-12 14:51:18,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:51:18,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-12 14:51:18,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-12 14:51:18,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-12 14:51:18,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-12 14:51:18,269 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 20 [2020-10-12 14:51:18,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:51:18,270 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-12 14:51:18,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:51:18,271 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-12 14:51:18,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-12 14:51:18,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:51:18,276 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 14:51:18,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:51:18,277 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:51:18,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:51:18,277 INFO L82 PathProgramCache]: Analyzing trace with hash 965575804, now seen corresponding path program 1 times [2020-10-12 14:51:18,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:51:18,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693298844] [2020-10-12 14:51:18,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:51:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:18,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:18,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:19,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:19,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 14:51:19,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:51:19,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1290 [2020-10-12 14:51:19,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:19,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:51:19,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:51:19,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 14:51:19,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:51:19,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:51:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:19,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:19,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:19,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:51:19,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:19,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 14:51:19,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:19,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:51:19,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:19,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:51:19,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-12 14:51:19,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:51:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:19,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:19,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:51:19,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:19,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-12 14:51:19,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:19,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:51:19,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:51:19,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:51:19,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:51:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:51:20,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693298844] [2020-10-12 14:51:20,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:51:20,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:51:20,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392910038] [2020-10-12 14:51:20,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:51:20,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:51:20,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:51:20,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:51:20,110 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 7 states. [2020-10-12 14:51:35,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:51:35,118 INFO L93 Difference]: Finished difference Result 2464 states and 3911 transitions. [2020-10-12 14:51:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:51:35,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-12 14:51:35,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:51:35,129 INFO L225 Difference]: With dead ends: 2464 [2020-10-12 14:51:35,129 INFO L226 Difference]: Without dead ends: 1479 [2020-10-12 14:51:35,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:51:35,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2020-10-12 14:51:35,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1441. [2020-10-12 14:51:35,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1441 states. [2020-10-12 14:51:35,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1870 transitions. [2020-10-12 14:51:35,188 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1870 transitions. Word has length 91 [2020-10-12 14:51:35,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:51:35,188 INFO L479 AbstractCegarLoop]: Abstraction has 1441 states and 1870 transitions. [2020-10-12 14:51:35,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:51:35,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1870 transitions. [2020-10-12 14:51:35,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 14:51:35,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:51:35,192 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 14:51:35,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:51:35,193 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:51:35,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:51:35,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1689652664, now seen corresponding path program 1 times [2020-10-12 14:51:35,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:51:35,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759226362] [2020-10-12 14:51:35,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:51:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:35,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:35,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:35,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 14:51:35,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:35,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-12 14:51:35,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:51:35,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-12 14:51:35,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 14:51:35,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:51:35,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:51:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:35,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:35,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:35,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:51:35,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:35,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:51:35,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:35,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:51:35,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:35,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:51:35,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:35,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:51:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:35,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:35,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:35,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 14:51:35,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:35,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-12 14:51:35,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:35,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:51:35,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:35,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 14:51:35,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:35,877 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:51:35,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759226362] [2020-10-12 14:51:35,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:51:35,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:51:35,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469955846] [2020-10-12 14:51:35,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:51:35,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:51:35,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:51:35,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:51:35,880 INFO L87 Difference]: Start difference. First operand 1441 states and 1870 transitions. Second operand 5 states. [2020-10-12 14:51:48,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:51:48,352 INFO L93 Difference]: Finished difference Result 3348 states and 4599 transitions. [2020-10-12 14:51:48,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:51:48,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-12 14:51:48,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:51:48,363 INFO L225 Difference]: With dead ends: 3348 [2020-10-12 14:51:48,364 INFO L226 Difference]: Without dead ends: 1900 [2020-10-12 14:51:48,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:51:48,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2020-10-12 14:51:48,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1885. [2020-10-12 14:51:48,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-12 14:51:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2309 transitions. [2020-10-12 14:51:48,425 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2309 transitions. Word has length 94 [2020-10-12 14:51:48,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:51:48,425 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 2309 transitions. [2020-10-12 14:51:48,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:51:48,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2309 transitions. [2020-10-12 14:51:48,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-12 14:51:48,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:51:48,430 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:51:48,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:51:48,431 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:51:48,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:51:48,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1408551821, now seen corresponding path program 1 times [2020-10-12 14:51:48,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:51:48,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238086271] [2020-10-12 14:51:48,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:51:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:48,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:48,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:49,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:49,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-12 14:51:49,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:51:49,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1332 [2020-10-12 14:51:49,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:51:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:51:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 14:51:49,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:49,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:51:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:49,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:49,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:49,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:51:49,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:49,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:51:49,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:51:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:49,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:51:49,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:51:50,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:51:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:50,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:50,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:50,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:51:50,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:50,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-12 14:51:50,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:50,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:51:50,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:50,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:51:50,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:50,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:51:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:50,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:50,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:50,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 14:51:50,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:50,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 14:51:50,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:51:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:51:50,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 14:51:50,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:51:50,551 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 96 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:51:50,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238086271] [2020-10-12 14:51:50,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:51:50,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:51:50,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161702208] [2020-10-12 14:51:50,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:51:50,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:51:50,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:51:50,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:51:50,559 INFO L87 Difference]: Start difference. First operand 1885 states and 2309 transitions. Second operand 7 states. [2020-10-12 14:52:04,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:52:04,328 INFO L93 Difference]: Finished difference Result 4251 states and 5511 transitions. [2020-10-12 14:52:04,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:52:04,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-12 14:52:04,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:52:04,353 INFO L225 Difference]: With dead ends: 4251 [2020-10-12 14:52:04,353 INFO L226 Difference]: Without dead ends: 2805 [2020-10-12 14:52:04,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:52:04,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2020-10-12 14:52:04,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2794. [2020-10-12 14:52:04,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2794 states. [2020-10-12 14:52:04,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2794 states to 2794 states and 3416 transitions. [2020-10-12 14:52:04,486 INFO L78 Accepts]: Start accepts. Automaton has 2794 states and 3416 transitions. Word has length 180 [2020-10-12 14:52:04,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:52:04,487 INFO L479 AbstractCegarLoop]: Abstraction has 2794 states and 3416 transitions. [2020-10-12 14:52:04,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:52:04,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2794 states and 3416 transitions. [2020-10-12 14:52:04,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-12 14:52:04,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:52:04,491 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:52:04,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:52:04,492 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:52:04,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:52:04,492 INFO L82 PathProgramCache]: Analyzing trace with hash -566563639, now seen corresponding path program 1 times [2020-10-12 14:52:04,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:52:04,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373036052] [2020-10-12 14:52:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:52:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:04,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:05,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:06,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:06,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 14:52:06,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:52:06,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1991 [2020-10-12 14:52:06,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:06,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:52:06,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:52:06,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-12 14:52:06,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:06,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:52:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:06,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:06,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:06,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:52:06,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:06,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 14:52:06,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:06,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:52:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:52:06,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:06,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:52:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:06,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:06,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:06,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:52:06,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:06,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-12 14:52:06,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:06,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:52:06,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:52:06,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:52:06,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:07,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:52:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:07,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:07,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:07,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:07,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:52:07,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:52:07,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-12 14:52:07,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:07,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:52:07,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:52:07,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 14:52:07,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 68 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 14:52:07,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373036052] [2020-10-12 14:52:07,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:52:07,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 14:52:07,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695334967] [2020-10-12 14:52:07,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 14:52:07,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:52:07,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 14:52:07,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:52:07,610 INFO L87 Difference]: Start difference. First operand 2794 states and 3416 transitions. Second operand 10 states. [2020-10-12 14:52:25,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:52:25,177 INFO L93 Difference]: Finished difference Result 7600 states and 10026 transitions. [2020-10-12 14:52:25,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 14:52:25,179 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 182 [2020-10-12 14:52:25,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:52:25,213 INFO L225 Difference]: With dead ends: 7600 [2020-10-12 14:52:25,214 INFO L226 Difference]: Without dead ends: 4795 [2020-10-12 14:52:25,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-12 14:52:25,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4795 states. [2020-10-12 14:52:25,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4795 to 4650. [2020-10-12 14:52:25,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4650 states. [2020-10-12 14:52:25,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4650 states to 4650 states and 5482 transitions. [2020-10-12 14:52:25,397 INFO L78 Accepts]: Start accepts. Automaton has 4650 states and 5482 transitions. Word has length 182 [2020-10-12 14:52:25,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:52:25,398 INFO L479 AbstractCegarLoop]: Abstraction has 4650 states and 5482 transitions. [2020-10-12 14:52:25,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 14:52:25,399 INFO L276 IsEmpty]: Start isEmpty. Operand 4650 states and 5482 transitions. [2020-10-12 14:52:25,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-12 14:52:25,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:52:25,405 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:52:25,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:52:25,405 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:52:25,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:52:25,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1389837139, now seen corresponding path program 1 times [2020-10-12 14:52:25,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:52:25,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335414996] [2020-10-12 14:52:25,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:52:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:25,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:25,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:26,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:28,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:28,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-12 14:52:28,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:52:28,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2546 [2020-10-12 14:52:28,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:28,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:52:28,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:52:28,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-12 14:52:28,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:28,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:52:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:28,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:28,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:28,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:52:28,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:28,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:52:28,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:28,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:52:28,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:28,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:52:28,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:28,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:52:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:28,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:28,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:28,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:52:28,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:28,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 14:52:28,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:28,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:52:28,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:28,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:52:28,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:28,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:52:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:28,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:28,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:28,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:28,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:52:28,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:52:28,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-12 14:52:28,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:28,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:52:28,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:52:28,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 14:52:28,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:28,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-12 14:52:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:28,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:28,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:28,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 14:52:28,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:28,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-12 14:52:28,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:28,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:52:28,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:52:28,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 14:52:28,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 266 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 14:52:28,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335414996] [2020-10-12 14:52:28,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:52:28,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:52:28,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239982428] [2020-10-12 14:52:28,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:52:28,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:52:28,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:52:28,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:52:28,974 INFO L87 Difference]: Start difference. First operand 4650 states and 5482 transitions. Second operand 8 states. [2020-10-12 14:52:42,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:52:42,186 INFO L93 Difference]: Finished difference Result 9755 states and 11861 transitions. [2020-10-12 14:52:42,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:52:42,188 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 270 [2020-10-12 14:52:42,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:52:42,216 INFO L225 Difference]: With dead ends: 9755 [2020-10-12 14:52:42,217 INFO L226 Difference]: Without dead ends: 5546 [2020-10-12 14:52:42,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:52:42,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5546 states. [2020-10-12 14:52:42,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5546 to 5527. [2020-10-12 14:52:42,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5527 states. [2020-10-12 14:52:42,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5527 states to 5527 states and 6570 transitions. [2020-10-12 14:52:42,405 INFO L78 Accepts]: Start accepts. Automaton has 5527 states and 6570 transitions. Word has length 270 [2020-10-12 14:52:42,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:52:42,406 INFO L479 AbstractCegarLoop]: Abstraction has 5527 states and 6570 transitions. [2020-10-12 14:52:42,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:52:42,406 INFO L276 IsEmpty]: Start isEmpty. Operand 5527 states and 6570 transitions. [2020-10-12 14:52:42,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-12 14:52:42,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:52:42,412 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-12 14:52:42,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:52:42,412 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:52:42,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:52:42,413 INFO L82 PathProgramCache]: Analyzing trace with hash 304321551, now seen corresponding path program 1 times [2020-10-12 14:52:42,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:52:42,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174074133] [2020-10-12 14:52:42,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:52:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:42,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:42,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:43,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:43,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:47,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:47,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-12 14:52:47,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:52:47,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-12 14:52:47,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:52:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-12 14:52:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 14:52:47,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:47,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:52:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:47,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:47,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:47,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:52:47,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:47,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:52:47,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:52:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:52:47,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:47,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:52:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:47,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:47,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:47,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:52:47,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:47,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 14:52:47,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:47,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:52:47,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:47,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:52:47,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:47,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:52:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:47,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:47,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:47,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:52:47,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:47,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-12 14:52:47,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:47,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:52:47,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:47,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 14:52:47,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:52:48,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 14:52:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:48,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:48,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:48,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:48,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:52:48,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:52:48,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-12 14:52:48,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:48,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:52:48,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:52:48,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:52:48,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:52:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 164 proven. 14 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-12 14:52:48,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174074133] [2020-10-12 14:52:48,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:52:48,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:52:48,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938337790] [2020-10-12 14:52:48,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:52:48,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:52:48,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:52:48,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:52:48,565 INFO L87 Difference]: Start difference. First operand 5527 states and 6570 transitions. Second operand 6 states. [2020-10-12 14:53:08,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:53:08,480 INFO L93 Difference]: Finished difference Result 13394 states and 16415 transitions. [2020-10-12 14:53:08,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:53:08,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 287 [2020-10-12 14:53:08,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:53:08,515 INFO L225 Difference]: With dead ends: 13394 [2020-10-12 14:53:08,516 INFO L226 Difference]: Without dead ends: 7826 [2020-10-12 14:53:08,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:53:08,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7826 states. [2020-10-12 14:53:08,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7826 to 7335. [2020-10-12 14:53:08,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7335 states. [2020-10-12 14:53:08,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7335 states to 7335 states and 8766 transitions. [2020-10-12 14:53:08,703 INFO L78 Accepts]: Start accepts. Automaton has 7335 states and 8766 transitions. Word has length 287 [2020-10-12 14:53:08,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:53:08,704 INFO L479 AbstractCegarLoop]: Abstraction has 7335 states and 8766 transitions. [2020-10-12 14:53:08,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:53:08,704 INFO L276 IsEmpty]: Start isEmpty. Operand 7335 states and 8766 transitions. [2020-10-12 14:53:08,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-12 14:53:08,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:53:08,713 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:53:08,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:53:08,714 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:53:08,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:53:08,715 INFO L82 PathProgramCache]: Analyzing trace with hash -905865800, now seen corresponding path program 1 times [2020-10-12 14:53:08,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:53:08,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336134633] [2020-10-12 14:53:08,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:53:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:08,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:09,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:11,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:11,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-12 14:53:11,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:53:11,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2985 [2020-10-12 14:53:11,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:11,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:53:11,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:53:11,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 14:53:11,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:53:11,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:53:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:11,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:11,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:11,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:53:11,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:11,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:53:11,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:11,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:11,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:11,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:11,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:53:11,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:53:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:12,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:12,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:12,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:53:12,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:12,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-12 14:53:12,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:53:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:53:12,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:53:12,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:53:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:12,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:12,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:12,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:53:12,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:12,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-12 14:53:12,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:12,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:53:12,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:53:12,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 14:53:12,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:53:12,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 14:53:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:12,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:12,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:12,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 14:53:12,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:12,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 14:53:12,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:12,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:12,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-12 14:53:12,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:12,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:12,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:53:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:12,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:13,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:13,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:53:13,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:13,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 14:53:13,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:13,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:13,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 14:53:13,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:13,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:53:13,500 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 144 proven. 149 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2020-10-12 14:53:13,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336134633] [2020-10-12 14:53:13,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:53:13,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:53:13,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943054753] [2020-10-12 14:53:13,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:53:13,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:53:13,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:53:13,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:53:13,505 INFO L87 Difference]: Start difference. First operand 7335 states and 8766 transitions. Second operand 7 states. [2020-10-12 14:53:34,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:53:34,545 INFO L93 Difference]: Finished difference Result 15671 states and 18815 transitions. [2020-10-12 14:53:34,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:53:34,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 369 [2020-10-12 14:53:34,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:53:34,595 INFO L225 Difference]: With dead ends: 15671 [2020-10-12 14:53:34,595 INFO L226 Difference]: Without dead ends: 8777 [2020-10-12 14:53:34,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:53:34,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8777 states. [2020-10-12 14:53:34,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8777 to 8728. [2020-10-12 14:53:34,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8728 states. [2020-10-12 14:53:34,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8728 states to 8728 states and 10378 transitions. [2020-10-12 14:53:34,879 INFO L78 Accepts]: Start accepts. Automaton has 8728 states and 10378 transitions. Word has length 369 [2020-10-12 14:53:34,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:53:34,879 INFO L479 AbstractCegarLoop]: Abstraction has 8728 states and 10378 transitions. [2020-10-12 14:53:34,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:53:34,880 INFO L276 IsEmpty]: Start isEmpty. Operand 8728 states and 10378 transitions. [2020-10-12 14:53:34,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-12 14:53:34,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:53:34,889 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-12 14:53:34,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:53:34,890 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:53:34,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:53:34,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1193955072, now seen corresponding path program 1 times [2020-10-12 14:53:34,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:53:34,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821114819] [2020-10-12 14:53:34,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:53:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:35,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:35,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:37,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:37,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-12 14:53:37,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:53:37,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2260 [2020-10-12 14:53:37,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:53:37,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-12 14:53:37,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 14:53:37,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:37,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:53:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:37,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:37,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:37,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:53:37,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:37,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:53:37,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:37,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:37,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:37,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:37,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:37,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:53:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:37,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:37,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:37,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:53:37,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:37,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 14:53:37,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:37,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:37,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:53:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:37,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:37,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:37,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:53:37,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:37,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 14:53:37,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:53:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:37,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:53:37,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:37,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-12 14:53:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:37,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:37,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:37,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 14:53:37,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:37,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-12 14:53:37,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:37,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:53:37,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:53:37,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 14:53:37,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:37,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-12 14:53:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:37,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:37,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:37,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:53:37,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:37,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 14:53:37,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:37,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:37,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 14:53:37,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:37,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:37,897 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 232 proven. 74 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-10-12 14:53:37,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821114819] [2020-10-12 14:53:37,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:53:37,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:53:37,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891491277] [2020-10-12 14:53:37,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:53:37,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:53:37,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:53:37,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:53:37,936 INFO L87 Difference]: Start difference. First operand 8728 states and 10378 transitions. Second operand 7 states. [2020-10-12 14:53:52,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:53:52,884 INFO L93 Difference]: Finished difference Result 20352 states and 25190 transitions. [2020-10-12 14:53:52,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:53:52,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 370 [2020-10-12 14:53:52,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:53:52,930 INFO L225 Difference]: With dead ends: 20352 [2020-10-12 14:53:52,930 INFO L226 Difference]: Without dead ends: 12063 [2020-10-12 14:53:52,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:53:52,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12063 states. [2020-10-12 14:53:53,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12063 to 11971. [2020-10-12 14:53:53,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11971 states. [2020-10-12 14:53:53,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11971 states to 11971 states and 14651 transitions. [2020-10-12 14:53:53,231 INFO L78 Accepts]: Start accepts. Automaton has 11971 states and 14651 transitions. Word has length 370 [2020-10-12 14:53:53,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:53:53,232 INFO L479 AbstractCegarLoop]: Abstraction has 11971 states and 14651 transitions. [2020-10-12 14:53:53,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:53:53,233 INFO L276 IsEmpty]: Start isEmpty. Operand 11971 states and 14651 transitions. [2020-10-12 14:53:53,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-12 14:53:53,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:53:53,245 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:53:53,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:53:53,246 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:53:53,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:53:53,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1425315296, now seen corresponding path program 1 times [2020-10-12 14:53:53,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:53:53,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238732816] [2020-10-12 14:53:53,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:53:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:53,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:55,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:55,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-12 14:53:55,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:55,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2143 [2020-10-12 14:53:55,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:55,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:53:55,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:53:55,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-12 14:53:55,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:55,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:53:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:55,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:55,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:55,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:53:55,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:55,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:53:55,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:53:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:53:55,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:55,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:53:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:55,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:55,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:55,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:53:55,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:55,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-12 14:53:55,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:55,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:53:55,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:53:55,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:53:55,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:53:56,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:53:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:56,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:56,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:56,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 14:53:56,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:56,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-12 14:53:56,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:56,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:53:56,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:53:56,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-12 14:53:56,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:56,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-12 14:53:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:56,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:56,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:56,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 14:53:56,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:56,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 14:53:56,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:56,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:56,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-12 14:53:56,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:56,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:56,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-12 14:53:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:56,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:56,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:56,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:53:56,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:56,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 14:53:56,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:56,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:56,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 14:53:56,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:56,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:57,053 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 64 proven. 368 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-12 14:53:57,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238732816] [2020-10-12 14:53:57,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:53:57,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 14:53:57,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5009289] [2020-10-12 14:53:57,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 14:53:57,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:53:57,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 14:53:57,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:53:57,057 INFO L87 Difference]: Start difference. First operand 11971 states and 14651 transitions. Second operand 10 states. [2020-10-12 14:54:26,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:54:26,019 INFO L93 Difference]: Finished difference Result 34318 states and 43173 transitions. [2020-10-12 14:54:26,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 14:54:26,026 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 389 [2020-10-12 14:54:26,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:54:26,118 INFO L225 Difference]: With dead ends: 34318 [2020-10-12 14:54:26,118 INFO L226 Difference]: Without dead ends: 22327 [2020-10-12 14:54:26,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2020-10-12 14:54:26,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22327 states. [2020-10-12 14:54:26,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22327 to 22257. [2020-10-12 14:54:26,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22257 states. [2020-10-12 14:54:26,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22257 states to 22257 states and 27591 transitions. [2020-10-12 14:54:26,697 INFO L78 Accepts]: Start accepts. Automaton has 22257 states and 27591 transitions. Word has length 389 [2020-10-12 14:54:26,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:54:26,698 INFO L479 AbstractCegarLoop]: Abstraction has 22257 states and 27591 transitions. [2020-10-12 14:54:26,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 14:54:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 22257 states and 27591 transitions. [2020-10-12 14:54:26,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2020-10-12 14:54:26,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:54:26,716 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 14:54:26,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:54:26,717 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:54:26,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:54:26,718 INFO L82 PathProgramCache]: Analyzing trace with hash -482247956, now seen corresponding path program 1 times [2020-10-12 14:54:26,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:54:26,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052849999] [2020-10-12 14:54:26,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:54:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:26,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:27,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:27,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 471 [2020-10-12 14:54:27,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:27,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 966 [2020-10-12 14:54:27,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:54:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 294 [2020-10-12 14:54:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:54:27,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:27,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:54:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:27,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:27,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:27,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:54:27,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:27,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:54:27,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:27,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:54:27,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:54:27,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:27,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:54:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:28,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:28,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:28,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:54:28,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:28,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 14:54:28,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:28,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:54:28,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:28,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:54:28,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:28,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:54:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:28,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:28,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:28,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:54:28,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:28,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 14:54:28,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:28,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:54:28,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:28,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:54:28,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:54:28,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-12 14:54:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:28,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:28,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:28,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 14:54:28,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:28,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 14:54:28,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:28,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:54:28,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:28,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 14:54:28,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:54:28,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-12 14:54:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:28,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:28,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:28,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 14:54:28,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:28,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-12 14:54:28,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:28,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:54:28,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:54:28,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 14:54:28,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:54:28,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-10-12 14:54:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:28,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:28,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:28,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:54:28,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:28,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 14:54:28,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:28,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:54:28,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 14:54:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:54:28,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:29,057 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 312 proven. 74 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2020-10-12 14:54:29,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052849999] [2020-10-12 14:54:29,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:54:29,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:54:29,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393566333] [2020-10-12 14:54:29,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:54:29,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:54:29,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:54:29,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:54:29,061 INFO L87 Difference]: Start difference. First operand 22257 states and 27591 transitions. Second operand 7 states.